BGP Filter – anuragbhatia.com

06 Jul

Missing IRINN route objects & outage!

A friend of mine buzzed me yesterday about his missing route objects. Later multiple other ISPs told the same story which triggered me to put this as a question on INNOG Mailing list. Many folks replied of missing route objects there and it seems to be limited to IRINN members only. I also asked the same question on APNIC mailing list and it was again confirmed about the issue.
Before I proceed further, here’s what it is all about.

What are route objects?

Route objects are basically entries created at an Internet Routing Registry (IRR). The key idea here is that an ISPs writes in a public register on what they want to do before they actually do. This gives a way for ISPs to transparently share their intentions in the global routing.

Example of a route object

anurag@devops01 ~> whois -h whois.radb.net 2402:b580::/32
route6:     2402:b580::/32
descr:      Anurag Bhatia R&D Pool
origin:     AS58901
mnt-by:     MAINT-AS58901
changed:    me@anuragbhatia.com 20200205
source:     ALTDB
anurag@devops01 ~>

E.g here I want to originate 2402:b580::/32 with my origin ASN 58901 and IRR which is giving this data is ALTDB. One can read more about route objects in my talk given at INNOG last year here. Another good detailed reading can be seen on FCIX here. Various operators build automated BGP routing filters based on the IRR data. So e.g anyone who is peering with me @ AS5891 can do:

anurag@devops01 ~> whois -h whois.radb.net !6as58901
A83
2402:b580:1::/48 2402:b580:3::/48 2402:b580:2::/48 2402:b580:4::/48 2402:b580::/32
C
anurag@devops01 ~>

This gives currently registered route objects and hence can be allowed on BGP filter.

What is IRINN?

IRINN or Indian Registry for Indian Names and Numbers is National Internet Registry (NIR) which functions closely with Regional Internet Registry (RIR) – APNIC in this region. While RIR is responsible for allocating IP addresses and AS numbers in the region, NIR is responsible for doing that within given National area. Broadly NIRs exists to facilitate and make it easy for local operators to interact directly with a local organisation in the local language, currency, timezone etc. Some other countries which have NIRs include China (CNNIC), Japan (JPNIC), Taiwan (TWNIC) etc. Indian NIR i.e IRINN is operated by NIXI (National Internet Exchange of India) and works closely with Ministry of Electronics & IT, Govt. of India. Indian ISPs, datacentres, web hosting companies, universities, banks and just anyone who needs IP address or ASN can get that from IRINN or APNIC.

Route object management at IRINN

For IRINN members, unfortunately, there’s no local IRR and basically all IRR entries go to the RIR (APNIC) run IRR. So instead of IRINN members managing those route objects directly with APNIC, they request those changes with IRINN and IRINN team does that manually in APNIC’s database. I covered this in detail in a previous blog post here.

Mass outage on 3rd and 4th July 2020

On 3rd July 2020 suddenly a large number of registered IRR route objects went missing from APNIC’s database where the maintainer was IRINN. There are no reported cases of any non-IRINN members with this issue. As far as I personally know – Tata Communications AS4755 is known to be filtering their Indian customers based on IRR data and regenerate filters every 6 hours. In the case of Airtel AS9498, I don’t think they automatically generate filters. Let’s see what was visible in the routing table.

A starting point can be RIPE RIS RRC03 because that is directly fed with full routing table from Tata Communications AS6453 which is technically direct upstream of Tata Communications AS4755 in India. Raw MRT dumps for RRC03 are here. It has around 12 routing table dumps (at time of me writing this blog post) for July 2020. Extracting only AS6453 data from it, that gives following total route announcements of AS6453.

An AS_PATH filter of ^6453 4755_ and counting total routes across 12 dumps in July gives me this.

Dump at 20200703.0800 has 17683 while dump after 8hrs of that at 20200703.1600 shows 17194. That’s a drop of 489 prefixes. That is likely not giving a complete picture since it’s 8hrs of time. Though Airtel, Tata or Jio do not feed Oregon route views collector. I am still curious about looking at Oregon Route-views dumps for _6453 4755_ as well as _9498_ and _9583_ dumps to check for any noticeable drop in the routes in the table. There are 34 visible dumps for July there (at a gap of 2hrs) between 2nd July – 4th July and that can give a more refined picture. Assuming if Tata Communications actually pulled off routes, those would be visible via various other networks who dump full table at Oregon route views.

Also, there is data available for withdrawal and announcements at every 15mins via Oregon route views. So I put code to read 300+ dumps for announcement and withdrawal data and plotted that.

So in the following graph, we find a drop of 600+ prefixes between 12:00 and 14:00 UTC on 3rd July 2020.

Date	Total prefixes behind AS4755
7/3/2020 08:00	17392
7/3/2020 10:00	17310
7/3/2020 12:00	17451
7/3/2020 14:00	16805
7/3/2020 16:00	16895
7/3/2020 18:00	17451
7/3/2020 20:00	17448

Looking at the diff of dump between 7/3/2020 12:00 and 7/3/2020 14:00 we can see 669 prefixes belonging to different ASNs which went offline and were not visible behind Tata Communications AS4755 at least for 4 hours.

Out of these 669 prefixes, I see 566 belong to MAINT-IN-IRINN maintainer and spread across 161 unique network ASNs. I have posted a list of prefixes, AS number and AS names below.

Prefix	Origin ASN	Origin AS Name
103.103.28.0/24	136704	ABNPL-AS-IN Apex Broadband Network Pvt. Ltd., IN
103.127.104.0/23	136704	ABNPL-AS-IN Apex Broadband Network Pvt. Ltd., IN
103.127.104.0/24	136704	ABNPL-AS-IN Apex Broadband Network Pvt. Ltd., IN
103.127.105.0/24	136704	ABNPL-AS-IN Apex Broadband Network Pvt. Ltd., IN
103.147.132.0/23	136704	ABNPL-AS-IN Apex Broadband Network Pvt. Ltd., IN
103.147.132.0/24	136704	ABNPL-AS-IN Apex Broadband Network Pvt. Ltd., IN
103.147.133.0/24	136704	ABNPL-AS-IN Apex Broadband Network Pvt. Ltd., IN
103.134.114.0/24	58965	ABSPL-AS-IN ANJANI BROADBAND SOLUTIONS PVT.LTD., IN
103.134.115.0/24	58965	ABSPL-AS-IN ANJANI BROADBAND SOLUTIONS PVT.LTD., IN
103.102.100.0/24	136719	ADNJBP-AS Anushree Digital Network Pvt Ltd, IN
103.102.101.0/24	136719	ADNJBP-AS Anushree Digital Network Pvt Ltd, IN
103.102.102.0/24	136719	ADNJBP-AS Anushree Digital Network Pvt Ltd, IN
103.102.103.0/24	136719	ADNJBP-AS Anushree Digital Network Pvt Ltd, IN
103.114.0.0/24	133001	AIRNETNETWORKS-AS-IN Airnet Cable And Datacom Pvt Ltd, IN
103.114.1.0/24	133001	AIRNETNETWORKS-AS-IN Airnet Cable And Datacom Pvt Ltd, IN
103.114.2.0/24	133001	AIRNETNETWORKS-AS-IN Airnet Cable And Datacom Pvt Ltd, IN
103.114.3.0/24	133001	AIRNETNETWORKS-AS-IN Airnet Cable And Datacom Pvt Ltd, IN
103.145.228.0/24	133001	AIRNETNETWORKS-AS-IN Airnet Cable And Datacom Pvt Ltd, IN
103.145.229.0/24	133001	AIRNETNETWORKS-AS-IN Airnet Cable And Datacom Pvt Ltd, IN
103.134.97.0/24	138235	AIRNETZ-AS-IN Airnetz Broadband Services Private Limited, IN
103.134.98.0/24	138235	AIRNETZ-AS-IN Airnetz Broadband Services Private Limited, IN
103.134.99.0/24	138235	AIRNETZ-AS-IN Airnetz Broadband Services Private Limited, IN
103.72.140.0/24	136302	AIRTECHN-AS Airtech Internet Solutions Pvt. Ltd., IN
103.72.141.0/24	136302	AIRTECHN-AS Airtech Internet Solutions Pvt. Ltd., IN
103.72.142.0/24	136302	AIRTECHN-AS Airtech Internet Solutions Pvt. Ltd., IN
103.141.246.0/24	23860	ALLIANCE-GATEWAY-AS-AP Alliance Broadband Services Pvt. Ltd., IN
103.18.168.0/24	23860	ALLIANCE-GATEWAY-AS-AP Alliance Broadband Services Pvt. Ltd., IN
103.18.171.0/24	23860	ALLIANCE-GATEWAY-AS-AP Alliance Broadband Services Pvt. Ltd., IN
103.24.85.0/24	23860	ALLIANCE-GATEWAY-AS-AP Alliance Broadband Services Pvt. Ltd., IN
103.24.86.0/23	23860	ALLIANCE-GATEWAY-AS-AP Alliance Broadband Services Pvt. Ltd., IN
103.240.96.0/22	23860	ALLIANCE-GATEWAY-AS-AP Alliance Broadband Services Pvt. Ltd., IN
103.242.188.0/22	23860	ALLIANCE-GATEWAY-AS-AP Alliance Broadband Services Pvt. Ltd., IN
103.242.188.0/24	23860	ALLIANCE-GATEWAY-AS-AP Alliance Broadband Services Pvt. Ltd., IN
103.242.189.0/24	23860	ALLIANCE-GATEWAY-AS-AP Alliance Broadband Services Pvt. Ltd., IN
103.242.190.0/24	23860	ALLIANCE-GATEWAY-AS-AP Alliance Broadband Services Pvt. Ltd., IN
103.242.191.0/24	23860	ALLIANCE-GATEWAY-AS-AP Alliance Broadband Services Pvt. Ltd., IN
103.242.196.0/22	23860	ALLIANCE-GATEWAY-AS-AP Alliance Broadband Services Pvt. Ltd., IN
103.249.36.0/24	23860	ALLIANCE-GATEWAY-AS-AP Alliance Broadband Services Pvt. Ltd., IN
103.249.37.0/24	23860	ALLIANCE-GATEWAY-AS-AP Alliance Broadband Services Pvt. Ltd., IN
103.249.38.0/24	23860	ALLIANCE-GATEWAY-AS-AP Alliance Broadband Services Pvt. Ltd., IN
103.249.39.0/24	23860	ALLIANCE-GATEWAY-AS-AP Alliance Broadband Services Pvt. Ltd., IN
103.249.4.0/22	23860	ALLIANCE-GATEWAY-AS-AP Alliance Broadband Services Pvt. Ltd., IN
103.50.81.0/24	23860	ALLIANCE-GATEWAY-AS-AP Alliance Broadband Services Pvt. Ltd., IN
103.51.148.0/22	23860	ALLIANCE-GATEWAY-AS-AP Alliance Broadband Services Pvt. Ltd., IN
103.66.11.0/24	23860	ALLIANCE-GATEWAY-AS-AP Alliance Broadband Services Pvt. Ltd., IN
103.66.8.0/24	23860	ALLIANCE-GATEWAY-AS-AP Alliance Broadband Services Pvt. Ltd., IN
103.66.9.0/24	23860	ALLIANCE-GATEWAY-AS-AP Alliance Broadband Services Pvt. Ltd., IN
103.77.136.0/22	23860	ALLIANCE-GATEWAY-AS-AP Alliance Broadband Services Pvt. Ltd., IN
103.77.44.0/22	23860	ALLIANCE-GATEWAY-AS-AP Alliance Broadband Services Pvt. Ltd., IN
103.78.16.0/22	23860	ALLIANCE-GATEWAY-AS-AP Alliance Broadband Services Pvt. Ltd., IN
103.78.16.0/23	23860	ALLIANCE-GATEWAY-AS-AP Alliance Broadband Services Pvt. Ltd., IN
103.78.18.0/23	23860	ALLIANCE-GATEWAY-AS-AP Alliance Broadband Services Pvt. Ltd., IN
103.87.140.0/22	23860	ALLIANCE-GATEWAY-AS-AP Alliance Broadband Services Pvt. Ltd., IN
103.87.140.0/24	23860	ALLIANCE-GATEWAY-AS-AP Alliance Broadband Services Pvt. Ltd., IN
103.87.143.0/24	23860	ALLIANCE-GATEWAY-AS-AP Alliance Broadband Services Pvt. Ltd., IN
103.88.216.0/24	23860	ALLIANCE-GATEWAY-AS-AP Alliance Broadband Services Pvt. Ltd., IN
103.88.217.0/24	23860	ALLIANCE-GATEWAY-AS-AP Alliance Broadband Services Pvt. Ltd., IN
103.88.218.0/24	23860	ALLIANCE-GATEWAY-AS-AP Alliance Broadband Services Pvt. Ltd., IN
103.88.219.0/24	23860	ALLIANCE-GATEWAY-AS-AP Alliance Broadband Services Pvt. Ltd., IN
103.94.136.0/22	23860	ALLIANCE-GATEWAY-AS-AP Alliance Broadband Services Pvt. Ltd., IN
103.94.138.0/23	23860	ALLIANCE-GATEWAY-AS-AP Alliance Broadband Services Pvt. Ltd., IN
116.206.200.0/22	23860	ALLIANCE-GATEWAY-AS-AP Alliance Broadband Services Pvt. Ltd., IN
116.206.200.0/24	23860	ALLIANCE-GATEWAY-AS-AP Alliance Broadband Services Pvt. Ltd., IN
116.206.201.0/24	23860	ALLIANCE-GATEWAY-AS-AP Alliance Broadband Services Pvt. Ltd., IN
116.206.202.0/24	23860	ALLIANCE-GATEWAY-AS-AP Alliance Broadband Services Pvt. Ltd., IN
116.206.220.0/24	23860	ALLIANCE-GATEWAY-AS-AP Alliance Broadband Services Pvt. Ltd., IN
116.206.221.0/24	23860	ALLIANCE-GATEWAY-AS-AP Alliance Broadband Services Pvt. Ltd., IN
116.206.222.0/24	23860	ALLIANCE-GATEWAY-AS-AP Alliance Broadband Services Pvt. Ltd., IN
116.206.223.0/24	23860	ALLIANCE-GATEWAY-AS-AP Alliance Broadband Services Pvt. Ltd., IN
150.129.100.0/22	23860	ALLIANCE-GATEWAY-AS-AP Alliance Broadband Services Pvt. Ltd., IN
150.129.100.0/23	23860	ALLIANCE-GATEWAY-AS-AP Alliance Broadband Services Pvt. Ltd., IN
150.129.64.0/22	23860	ALLIANCE-GATEWAY-AS-AP Alliance Broadband Services Pvt. Ltd., IN
150.242.148.0/22	23860	ALLIANCE-GATEWAY-AS-AP Alliance Broadband Services Pvt. Ltd., IN
103.229.5.0/24	133238	ALLTIMEIT-AS Alltimeit Solutions Pvt Ltd, IN
103.140.252.0/24	138759	AMEEX-AS Ameex Technologies Pvt. Ltd., IN
103.142.63.0/24	139520	ANG12345-AS-IN Ang India Limited, IN
103.141.166.0/23	134924	APH17-AS-IN Aph Networks Private Limited, IN
103.140.23.0/24	134290	ARROW46-AS Arrow Touch Wireless Internet Private Limited, IN
103.88.132.0/22	134942	ASBN-AS Ashok Secure Broadband Network Pvt Ltd, IN
103.143.168.0/24	139490	ASPTNPL-AS-IN Aspt Networks Pvt Ltd, IN
103.148.206.0/24	139490	ASPTNPL-AS-IN Aspt Networks Pvt Ltd, IN
103.220.224.0/24	139490	ASPTNPL-AS-IN Aspt Networks Pvt Ltd, IN
103.142.164.0/24	139523	ATTIPL-AS-IN All Time Tele Infra Pvt Ltd, IN
103.142.165.0/24	139523	ATTIPL-AS-IN All Time Tele Infra Pvt Ltd, IN
103.132.246.0/24	134392	AUSREGISTRY-AS-ANYCAST11 AusRegistry Anycast system, TR
103.132.247.0/24	134392	AUSREGISTRY-AS-ANYCAST11 AusRegistry Anycast system, TR
103.80.157.0/24	136352	AUTONET-AS-IN Autonetic Software Technologies Pvt Ltd, IN
103.80.158.0/24	136352	AUTONET-AS-IN Autonetic Software Technologies Pvt Ltd, IN
103.80.159.0/24	136352	AUTONET-AS-IN Autonetic Software Technologies Pvt Ltd, IN
103.224.108.0/23	136252	BANKOFBARODA-AS-AP THE BANK OF BARODA LIMITED, IN
103.224.109.0/24	136252	BANKOFBARODA-AS-AP THE BANK OF BARODA LIMITED, IN
103.197.220.0/24	134258	BHAWANI-AS-IN Bhwani Cable and Broadband Services, IN
103.197.221.0/24	134258	BHAWANI-AS-IN Bhwani Cable and Broadband Services, IN
103.197.222.0/24	134258	BHAWANI-AS-IN Bhwani Cable and Broadband Services, IN
103.197.223.0/24	134258	BHAWANI-AS-IN Bhwani Cable and Broadband Services, IN
157.119.168.0/24	134258	BHAWANI-AS-IN Bhwani Cable and Broadband Services, IN
157.119.169.0/24	134258	BHAWANI-AS-IN Bhwani Cable and Broadband Services, IN
157.119.171.0/24	134258	BHAWANI-AS-IN Bhwani Cable and Broadband Services, IN
103.109.134.0/23	137108	BKID-AS Bank Of India, IN
103.80.130.0/24	59197	BRBNMPL-AS Bharatiya Reserve Bank Note Mudran Pvt. Ltd., IN
103.118.180.0/24	137623	BSTPL-AS-IN Bloodstone Technologies Pvt. Ltd., IN
103.59.88.0/24	139538	CABLENETWORKBROADBANDSYSTEM-AS-IN Uniquetrade Broadband System Pvt. Ltd., IN
103.96.92.0/23	136685	CAMS-AS Computer Age Management Services Pvt. Ltd., IN
103.96.93.0/24	136685	CAMS-AS Computer Age Management Services Pvt. Ltd., IN
103.96.95.0/24	136685	CAMS-AS Computer Age Management Services Pvt. Ltd., IN
103.110.222.0/24	137176	CCIL-AS The Clearing Corporation Of India Limited, IN
103.113.150.0/24	137176	CCIL-AS The Clearing Corporation Of India Limited, IN
103.113.151.0/24	137176	CCIL-AS The Clearing Corporation Of India Limited, IN
175.111.181.0/24	136637	CIFYIT-AS-IN Cify IT Services Pvt Ltd, IN
103.81.152.0/24	139541	CITYINFO-AS City Infosol Pvt Ltd, IN
103.81.153.0/24	139541	CITYINFO-AS City Infosol Pvt Ltd, IN
103.81.154.0/24	139541	CITYINFO-AS City Infosol Pvt Ltd, IN
103.81.155.0/24	139541	CITYINFO-AS City Infosol Pvt Ltd, IN
103.19.148.0/22	38625	CJONLINE CJONLINE ISP India, IN
103.132.204.0/24	135849	CLICKNET-AS-IN Clicknet Communication Pvt. Ltd., IN
103.132.207.0/24	135849	CLICKNET-AS-IN Clicknet Communication Pvt. Ltd., IN
103.143.84.0/24	139488	CONJOINIXTS-AS-IN Conjoinix Total Solutions Private Limited, IN
103.146.110.0/24	139549	CRISPENT-AS Crisp Enterprises, IN
103.146.111.0/24	139549	CRISPENT-AS Crisp Enterprises, IN
103.105.101.0/24	18229	CTRLS-AS-IN CtrlS Datacenters Ltd., IN
103.105.179.0/24	18229	CTRLS-AS-IN CtrlS Datacenters Ltd., IN
103.206.104.0/24	18229	CTRLS-AS-IN CtrlS Datacenters Ltd., IN
103.206.107.0/24	18229	CTRLS-AS-IN CtrlS Datacenters Ltd., IN
103.24.124.0/22	18229	CTRLS-AS-IN CtrlS Datacenters Ltd., IN
103.24.124.0/24	18229	CTRLS-AS-IN CtrlS Datacenters Ltd., IN
103.24.125.0/24	18229	CTRLS-AS-IN CtrlS Datacenters Ltd., IN
103.24.126.0/24	18229	CTRLS-AS-IN CtrlS Datacenters Ltd., IN
103.24.127.0/24	18229	CTRLS-AS-IN CtrlS Datacenters Ltd., IN
103.241.182.0/24	18229	CTRLS-AS-IN CtrlS Datacenters Ltd., IN
103.241.183.0/24	18229	CTRLS-AS-IN CtrlS Datacenters Ltd., IN
103.255.144.0/24	18229	CTRLS-AS-IN CtrlS Datacenters Ltd., IN
103.255.145.0/24	18229	CTRLS-AS-IN CtrlS Datacenters Ltd., IN
103.255.146.0/24	18229	CTRLS-AS-IN CtrlS Datacenters Ltd., IN
103.255.147.0/24	18229	CTRLS-AS-IN CtrlS Datacenters Ltd., IN
103.41.96.0/24	18229	CTRLS-AS-IN CtrlS Datacenters Ltd., IN
103.41.97.0/24	18229	CTRLS-AS-IN CtrlS Datacenters Ltd., IN
103.41.98.0/24	18229	CTRLS-AS-IN CtrlS Datacenters Ltd., IN
103.41.99.0/24	18229	CTRLS-AS-IN CtrlS Datacenters Ltd., IN
103.44.0.0/24	18229	CTRLS-AS-IN CtrlS Datacenters Ltd., IN
103.44.1.0/24	18229	CTRLS-AS-IN CtrlS Datacenters Ltd., IN
103.44.2.0/24	18229	CTRLS-AS-IN CtrlS Datacenters Ltd., IN
103.112.12.0/24	137124	CTRONIX-AS-IN Jai Mata Di Telectronix Private Limited, IN
103.112.13.0/24	137124	CTRONIX-AS-IN Jai Mata Di Telectronix Private Limited, IN
103.112.14.0/24	137124	CTRONIX-AS-IN Jai Mata Di Telectronix Private Limited, IN
103.112.15.0/24	137124	CTRONIX-AS-IN Jai Mata Di Telectronix Private Limited, IN
123.253.12.0/24	133977	CYBER_CLOUD_SHIELD-AS CYBER CLOUD SHIELD BROADBAND SERVICES PRIVATE LIMITED, IN
123.253.13.0/24	133977	CYBER_CLOUD_SHIELD-AS CYBER CLOUD SHIELD BROADBAND SERVICES PRIVATE LIMITED, IN
123.253.14.0/24	133977	CYBER_CLOUD_SHIELD-AS CYBER CLOUD SHIELD BROADBAND SERVICES PRIVATE LIMITED, IN
123.253.15.0/24	133977	CYBER_CLOUD_SHIELD-AS CYBER CLOUD SHIELD BROADBAND SERVICES PRIVATE LIMITED, IN
103.143.173.0/24	135728	DATAISP-AS Datagram Network India Pvt. Ltd., IN
103.100.216.0/24	136664	DDTPL-AS D D Telecom Pvt. Ltd, IN
103.129.0.0/23	23872	DELDSLCORE-AS-AP delDSL Internet Pvt. Ltd., IN
103.129.0.0/24	23872	DELDSLCORE-AS-AP delDSL Internet Pvt. Ltd., IN
103.129.1.0/24	23872	DELDSLCORE-AS-AP delDSL Internet Pvt. Ltd., IN
103.142.18.0/24	23872	DELDSLCORE-AS-AP delDSL Internet Pvt. Ltd., IN
103.242.224.0/22	23872	DELDSLCORE-AS-AP delDSL Internet Pvt. Ltd., IN
103.224.111.0/24	132994	DENABANK-AS DENA BANK, IN
103.204.188.0/24	135718	DISHAWAVESINFONET-AS DISHAWAVES INFONET PVT. LTD, IN
103.204.190.0/24	135718	DISHAWAVESINFONET-AS DISHAWAVES INFONET PVT. LTD, IN
103.204.191.0/24	135718	DISHAWAVESINFONET-AS DISHAWAVES INFONET PVT. LTD, IN
103.146.170.0/24	17754	EXCELL-AS Excellmedia, IN
103.146.171.0/24	17754	EXCELL-AS Excellmedia, IN
103.110.48.0/24	133982	EXCITEL-AS-IN Excitel Broadband Private Limited, IN
103.92.40.0/24	133982	EXCITEL-AS-IN Excitel Broadband Private Limited, IN
103.92.41.0/24	133982	EXCITEL-AS-IN Excitel Broadband Private Limited, IN
103.92.42.0/24	133982	EXCITEL-AS-IN Excitel Broadband Private Limited, IN
103.92.43.0/24	133982	EXCITEL-AS-IN Excitel Broadband Private Limited, IN
144.48.72.0/24	133982	EXCITEL-AS-IN Excitel Broadband Private Limited, IN
144.48.73.0/24	133982	EXCITEL-AS-IN Excitel Broadband Private Limited, IN
144.48.74.0/24	133982	EXCITEL-AS-IN Excitel Broadband Private Limited, IN
144.48.75.0/24	133982	EXCITEL-AS-IN Excitel Broadband Private Limited, IN
103.138.4.0/24	133692	FASTNET-AS-IN Fastnet Communication Pvt. Ltd., IN
103.138.5.0/24	133692	FASTNET-AS-IN Fastnet Communication Pvt. Ltd., IN
103.47.216.0/24	133692	FASTNET-AS-IN Fastnet Communication Pvt. Ltd., IN
103.47.217.0/24	133692	FASTNET-AS-IN Fastnet Communication Pvt. Ltd., IN
103.47.218.0/24	133692	FASTNET-AS-IN Fastnet Communication Pvt. Ltd., IN
103.47.219.0/24	133692	FASTNET-AS-IN Fastnet Communication Pvt. Ltd., IN
103.117.124.0/24	137619	FBSPL-AS-IN Fastnet Broadband Services, IN
103.83.199.0/24	17330	FIREEYE-AS, US
103.204.132.0/22	24554	FIVE-NET-AS-IN Fivenetwork Solution India Pvt Ltd Internet, IN
103.219.16.0/22	135260	FOURTY2COMM-AS 42 Communications Pvt. Ltd., IN
103.16.69.0/24	132559	GATIK-AS-IN Gatik Business Solutions, IN
103.132.196.0/24	138317	GAURAVCO-AS Gaurav Communication Pvt. Ltd., IN
103.132.197.0/24	138317	GAURAVCO-AS Gaurav Communication Pvt. Ltd., IN
103.132.198.0/24	138317	GAURAVCO-AS Gaurav Communication Pvt. Ltd., IN
103.132.199.0/24	138317	GAURAVCO-AS Gaurav Communication Pvt. Ltd., IN
103.152.184.0/24	134033	HIREACH-BROADBAND-AS HIREACH BROADBAND PRIVATE LTD, IN
103.152.185.0/24	134033	HIREACH-BROADBAND-AS HIREACH BROADBAND PRIVATE LTD, IN
103.107.252.0/24	137102	HTPL-AS-IN Hustel Telecom Pvt. Ltd., IN
103.107.253.0/24	137102	HTPL-AS-IN Hustel Telecom Pvt. Ltd., IN
103.107.254.0/24	137102	HTPL-AS-IN Hustel Telecom Pvt. Ltd., IN
103.107.255.0/24	137102	HTPL-AS-IN Hustel Telecom Pvt. Ltd., IN
103.219.0.0/24	135189	ICONIN-AS I connect broadband support and services, IN
103.219.1.0/24	135189	ICONIN-AS I connect broadband support and services, IN
103.219.2.0/24	135189	ICONIN-AS I connect broadband support and services, IN
103.219.3.0/24	135189	ICONIN-AS I connect broadband support and services, IN
45.249.252.0/24	135189	ICONIN-AS I connect broadband support and services, IN
45.249.253.0/24	135189	ICONIN-AS I connect broadband support and services, IN
45.249.254.0/24	135189	ICONIN-AS I connect broadband support and services, IN
45.249.255.0/24	135189	ICONIN-AS I connect broadband support and services, IN
103.142.166.0/24	59195	IEX-AS Indian Energy Exchange Ltd, IN
103.105.97.0/24	134858	IFORENETWORKS-AS-IN iForce Networks, IN
103.148.8.0/23	134858	IFORENETWORKS-AS-IN iForce Networks, IN
103.147.94.0/24	139534	IGIPL-AS Indotel Global Internet Private Limited, IN
103.144.234.0/24	139497	IILNPL-AS-IN I-infolink Networks Private Limited, IN
103.27.10.0/24	132780	IITDEL-AS-IN Indian Institute of Technology Delhi, IN
103.27.11.0/24	132780	IITDEL-AS-IN Indian Institute of Technology Delhi, IN
103.27.8.0/22	132780	IITDEL-AS-IN Indian Institute of Technology Delhi, IN
103.27.8.0/24	132780	IITDEL-AS-IN Indian Institute of Technology Delhi, IN
103.27.9.0/24	132780	IITDEL-AS-IN Indian Institute of Technology Delhi, IN
103.138.234.0/23	133242	INFIBEAM-AS Infibeam Avenues Limited, IN
103.204.189.0/24	45117	INPL-IN-AP Ishan_s Network, IN
103.127.20.0/24	58678	INTECHONLINE-IN Intech Online Private Limited, IN
103.127.21.0/24	58678	INTECHONLINE-IN Intech Online Private Limited, IN
103.127.22.0/24	58678	INTECHONLINE-IN Intech Online Private Limited, IN
103.127.23.0/24	58678	INTECHONLINE-IN Intech Online Private Limited, IN
103.219.164.0/24	58678	INTECHONLINE-IN Intech Online Private Limited, IN
103.219.165.0/24	58678	INTECHONLINE-IN Intech Online Private Limited, IN
103.219.166.0/24	58678	INTECHONLINE-IN Intech Online Private Limited, IN
103.219.167.0/24	58678	INTECHONLINE-IN Intech Online Private Limited, IN
103.140.190.0/24	138761	INYCB-AS-IN Inycb Network Private Limited, IN
103.140.191.0/24	138761	INYCB-AS-IN Inycb Network Private Limited, IN
103.117.200.0/23	55566	IUCAA-IN Inter University Centre for Astronomy and Astrophysics, IN
103.120.58.0/24	137639	JASNET-AS Jasnet Networks Private Limited, IN
103.120.59.0/24	137639	JASNET-AS Jasnet Networks Private Limited, IN
103.145.54.0/24	139514	JBJBSPL-AS-IN Jb Jain Broadband Solutions Private Limited, IN
103.145.55.0/24	139514	JBJBSPL-AS-IN Jb Jain Broadband Solutions Private Limited, IN
103.121.150.0/24	135226	JEECOM-AS Jeecommunications, IN
103.121.151.0/24	135226	JEECOM-AS Jeecommunications, IN
103.148.167.0/24	133280	JSW47-AS Jsw Steel Ltd, IN
103.199.162.0/24	58969	KCCL-AS Kerala Communicators Cable Limited, IN
103.101.89.0/24	136723	KNPLMZN-AS Kartik Network Pvt Ltd, IN
103.101.90.0/24	136723	KNPLMZN-AS Kartik Network Pvt Ltd, IN
103.101.91.0/24	136723	KNPLMZN-AS Kartik Network Pvt Ltd, IN
103.147.112.0/24	139565	KORDBSPL-AS Kord Broadband Services Pvt Ltd, IN
103.147.113.0/24	139565	KORDBSPL-AS Kord Broadband Services Pvt Ltd, IN
103.140.17.0/24	138754	KVBPL-AS-IN Kerala Vision Broad Band Private Limited, IN
103.102.72.0/24	136672	L7CPL-AS Galactica Infotel Private Limited, IN
103.102.73.0/24	136672	L7CPL-AS Galactica Infotel Private Limited, IN
103.102.74.0/24	136672	L7CPL-AS Galactica Infotel Private Limited, IN
103.102.75.0/24	136672	L7CPL-AS Galactica Infotel Private Limited, IN
103.132.28.0/24	138311	LIMERICK-AS-IN Limerick Technologies Pvt Ltd, IN
103.132.29.0/24	138311	LIMERICK-AS-IN Limerick Technologies Pvt Ltd, IN
103.98.20.0/24	136645	LINKUP-AS-IN Linkup Networks Pvt Ltd, IN
103.98.21.0/24	136645	LINKUP-AS-IN Linkup Networks Pvt Ltd, IN
103.98.22.0/24	136645	LINKUP-AS-IN Linkup Networks Pvt Ltd, IN
103.98.23.0/24	136645	LINKUP-AS-IN Linkup Networks Pvt Ltd, IN
103.99.12.0/24	136377	LINKWAVE-AS Linkwave Technologies Pvt. Ltd, IN
103.99.13.0/24	136377	LINKWAVE-AS Linkwave Technologies Pvt. Ltd, IN
103.99.14.0/24	136377	LINKWAVE-AS Linkwave Technologies Pvt. Ltd, IN
103.99.15.0/24	136377	LINKWAVE-AS Linkwave Technologies Pvt. Ltd, IN
103.133.228.0/24	138520	LNSPL-AS-AP Lalu Network Solutions Private Limited, IN
103.133.229.0/24	138520	LNSPL-AS-AP Lalu Network Solutions Private Limited, IN
103.133.230.0/24	138520	LNSPL-AS-AP Lalu Network Solutions Private Limited, IN
103.133.231.0/24	138520	LNSPL-AS-AP Lalu Network Solutions Private Limited, IN
103.133.64.0/24	138520	LNSPL-AS-AP Lalu Network Solutions Private Limited, IN
103.133.65.0/24	138520	LNSPL-AS-AP Lalu Network Solutions Private Limited, IN
103.133.66.0/24	138520	LNSPL-AS-AP Lalu Network Solutions Private Limited, IN
103.79.248.0/22	133648	MAGNUSTELELINKS-AS-IN MNR Broadband Services Pvt. Ltd., IN
103.78.149.0/24	134042	MAHAMEDIACOMLLP-AS-IN MAHA Mediacom LLP, IN
103.78.150.0/24	134042	MAHAMEDIACOMLLP-AS-IN MAHA Mediacom LLP, IN
103.139.220.0/24	138741	MAULIMSO-AS Mauli Shiv Cable Internet Services Private Limited, IN
103.139.221.0/24	138741	MAULIMSO-AS Mauli Shiv Cable Internet Services Private Limited, IN
103.120.234.0/24	132515	MAXIMO-AS-IN Maximo Infotech, IN
103.120.235.0/24	132515	MAXIMO-AS-IN Maximo Infotech, IN
103.49.245.0/24	133722	MCARBON-AS mCarbon Tech Innovation Private Limited, IN
103.147.176.0/24	55352	MCPL-IN Microscan Computers Private Limited, IN
103.147.177.0/24	55352	MCPL-IN Microscan Computers Private Limited, IN
103.116.19.0/24	135253	MFT-AS Mft Internet Private Limited, IN
103.94.84.0/24	136374	MICR-AS Microtalk Communications Pvt Ltd, IN
103.94.85.0/24	136374	MICR-AS Microtalk Communications Pvt Ltd, IN
103.124.168.0/24	138259	MIFI-AS-IN Manish Infocom Private Limited, IN
103.124.169.0/24	138259	MIFI-AS-IN Manish Infocom Private Limited, IN
103.124.170.0/24	138259	MIFI-AS-IN Manish Infocom Private Limited, IN
103.124.171.0/24	138259	MIFI-AS-IN Manish Infocom Private Limited, IN
103.107.178.0/24	135877	MIRACLE1-AS Miracle Telecommunication Services Pvt Ltd, IN
103.107.179.0/24	135877	MIRACLE1-AS Miracle Telecommunication Services Pvt Ltd, IN
103.134.250.0/24	137650	MITSPLH-AS-IN Micronet It Services Private Limited, IN
103.134.251.0/24	137650	MITSPLH-AS-IN Micronet It Services Private Limited, IN
103.208.54.0/24	135834	MULTIFI-AS Multicraft Digital Technologies Private Limited, IN
103.91.122.0/24	135834	MULTIFI-AS Multicraft Digital Technologies Private Limited, IN
103.91.244.0/24	135834	MULTIFI-AS Multicraft Digital Technologies Private Limited, IN
103.91.245.0/24	135834	MULTIFI-AS Multicraft Digital Technologies Private Limited, IN
103.110.168.0/24	137132	MYHSB-AS High Speed Broadband, IN
103.110.169.0/24	137132	MYHSB-AS High Speed Broadband, IN
103.110.170.0/24	137132	MYHSB-AS High Speed Broadband, IN
103.110.171.0/24	137132	MYHSB-AS High Speed Broadband, IN
103.135.168.0/24	137132	MYHSB-AS High Speed Broadband, IN
103.135.169.0/24	137132	MYHSB-AS High Speed Broadband, IN
103.135.170.0/24	137132	MYHSB-AS High Speed Broadband, IN
103.235.104.0/22	17439	NETMAGIC-AP Netmagic Datacenter Mumbai, IN
103.35.164.0/23	17439	NETMAGIC-AP Netmagic Datacenter Mumbai, IN
103.115.124.0/24	135223	NETWAY-AS Netway Internet Pvt Ltd, IN
103.115.125.0/24	135223	NETWAY-AS Netway Internet Pvt Ltd, IN
103.129.232.0/24	137627	NEXTELIN-AS-IN Nextel Communications India Pvt Ltd, IN
103.129.233.0/24	137627	NEXTELIN-AS-IN Nextel Communications India Pvt Ltd, IN
103.129.234.0/24	137627	NEXTELIN-AS-IN Nextel Communications India Pvt Ltd, IN
103.129.235.0/24	137627	NEXTELIN-AS-IN Nextel Communications India Pvt Ltd, IN
103.214.64.0/22	58640	NEXTRA-IN NEXTRA TELESERVICES PVT. LTD., IN
103.214.64.0/23	58640	NEXTRA-IN NEXTRA TELESERVICES PVT. LTD., IN
103.214.66.0/23	58640	NEXTRA-IN NEXTRA TELESERVICES PVT. LTD., IN
103.218.252.0/24	58640	NEXTRA-IN NEXTRA TELESERVICES PVT. LTD., IN
103.218.253.0/24	58640	NEXTRA-IN NEXTRA TELESERVICES PVT. LTD., IN
103.218.254.0/24	58640	NEXTRA-IN NEXTRA TELESERVICES PVT. LTD., IN
103.218.255.0/24	58640	NEXTRA-IN NEXTRA TELESERVICES PVT. LTD., IN
103.220.220.0/22	58640	NEXTRA-IN NEXTRA TELESERVICES PVT. LTD., IN
103.220.220.0/23	58640	NEXTRA-IN NEXTRA TELESERVICES PVT. LTD., IN
103.220.222.0/23	58640	NEXTRA-IN NEXTRA TELESERVICES PVT. LTD., IN
103.231.116.0/22	58640	NEXTRA-IN NEXTRA TELESERVICES PVT. LTD., IN
103.231.116.0/23	58640	NEXTRA-IN NEXTRA TELESERVICES PVT. LTD., IN
103.231.118.0/23	58640	NEXTRA-IN NEXTRA TELESERVICES PVT. LTD., IN
103.248.244.0/22	58640	NEXTRA-IN NEXTRA TELESERVICES PVT. LTD., IN
103.35.52.0/22	58640	NEXTRA-IN NEXTRA TELESERVICES PVT. LTD., IN
103.60.112.0/22	58640	NEXTRA-IN NEXTRA TELESERVICES PVT. LTD., IN
103.60.112.0/23	58640	NEXTRA-IN NEXTRA TELESERVICES PVT. LTD., IN
103.60.114.0/23	58640	NEXTRA-IN NEXTRA TELESERVICES PVT. LTD., IN
144.48.76.0/23	58640	NEXTRA-IN NEXTRA TELESERVICES PVT. LTD., IN
144.48.78.0/24	58640	NEXTRA-IN NEXTRA TELESERVICES PVT. LTD., IN
163.47.152.0/22	58640	NEXTRA-IN NEXTRA TELESERVICES PVT. LTD., IN
223.29.220.0/22	58640	NEXTRA-IN NEXTRA TELESERVICES PVT. LTD., IN
43.252.24.0/22	58640	NEXTRA-IN NEXTRA TELESERVICES PVT. LTD., IN
45.120.56.0/22	58640	NEXTRA-IN NEXTRA TELESERVICES PVT. LTD., IN
45.120.56.0/23	58640	NEXTRA-IN NEXTRA TELESERVICES PVT. LTD., IN
45.120.58.0/23	58640	NEXTRA-IN NEXTRA TELESERVICES PVT. LTD., IN
45.127.40.0/22	58640	NEXTRA-IN NEXTRA TELESERVICES PVT. LTD., IN
45.252.180.0/22	58640	NEXTRA-IN NEXTRA TELESERVICES PVT. LTD., IN
45.252.180.0/23	58640	NEXTRA-IN NEXTRA TELESERVICES PVT. LTD., IN
45.252.182.0/23	58640	NEXTRA-IN NEXTRA TELESERVICES PVT. LTD., IN
59.153.36.0/22	58640	NEXTRA-IN NEXTRA TELESERVICES PVT. LTD., IN
103.107.88.0/22	132470	NEXTRAT-AS-AP Nextra Telesolutions Private Limited, IN
103.107.88.0/23	132470	NEXTRAT-AS-AP Nextra Telesolutions Private Limited, IN
103.107.88.0/24	132470	NEXTRAT-AS-AP Nextra Telesolutions Private Limited, IN
103.107.89.0/24	132470	NEXTRAT-AS-AP Nextra Telesolutions Private Limited, IN
103.107.90.0/24	132470	NEXTRAT-AS-AP Nextra Telesolutions Private Limited, IN
103.107.91.0/24	132470	NEXTRAT-AS-AP Nextra Telesolutions Private Limited, IN
103.133.124.0/24	138278	NIKITABR-AS-IN Nikita Broadband Pvt. Ltd., IN
103.48.180.0/22	132774	NISSBROADBAND-AS-IN Niss Internet services private limited, IN
103.66.10.0/24	134034	NITYAINT-AS-IN Nitya Internet Private Limited, IN
103.145.89.0/24	55824	NKN-CORE-NW NKN Core Network, IN
103.113.252.0/24	134343	OMSAI-AS Om Sai Entertainment, IN
103.113.253.0/24	134343	OMSAI-AS Om Sai Entertainment, IN
103.113.254.0/24	134343	OMSAI-AS Om Sai Entertainment, IN
103.113.255.0/24	134343	OMSAI-AS Om Sai Entertainment, IN
103.83.136.0/22	135839	OPTICAL-AS Optical Broadband Communication Pvt. Ltd, IN
103.83.136.0/23	135839	OPTICAL-AS Optical Broadband Communication Pvt. Ltd, IN
103.83.136.0/24	135839	OPTICAL-AS Optical Broadband Communication Pvt. Ltd, IN
103.83.138.0/23	135839	OPTICAL-AS Optical Broadband Communication Pvt. Ltd, IN
103.83.138.0/24	135839	OPTICAL-AS Optical Broadband Communication Pvt. Ltd, IN
103.83.139.0/24	135839	OPTICAL-AS Optical Broadband Communication Pvt. Ltd, IN
103.121.116.0/24	134302	OXYNET-AS Oxynet Telecommunications Private Limited, IN
103.121.117.0/24	134302	OXYNET-AS Oxynet Telecommunications Private Limited, IN
103.121.118.0/24	134302	OXYNET-AS Oxynet Telecommunications Private Limited, IN
103.121.119.0/24	134302	OXYNET-AS Oxynet Telecommunications Private Limited, IN
103.103.132.0/24	136721	PALVYARA-AS Pal Digital Networking Pvt. Ltd., IN
103.103.133.0/24	136721	PALVYARA-AS Pal Digital Networking Pvt. Ltd., IN
103.116.32.0/24	135791	PHONEPE-AS Phonepe Private Limited, IN
103.116.34.0/24	135791	PHONEPE-AS Phonepe Private Limited, IN
103.139.60.0/23	135772	POWERNETCOMM-AS Powernet Communications Pvt.ltd., IN
103.139.60.0/24	135772	POWERNETCOMM-AS Powernet Communications Pvt.ltd., IN
103.139.61.0/24	135772	POWERNETCOMM-AS Powernet Communications Pvt.ltd., IN
103.196.220.0/22	135772	POWERNETCOMM-AS Powernet Communications Pvt.ltd., IN
103.196.220.0/23	135772	POWERNETCOMM-AS Powernet Communications Pvt.ltd., IN
103.196.220.0/24	135772	POWERNETCOMM-AS Powernet Communications Pvt.ltd., IN
103.196.221.0/24	135772	POWERNETCOMM-AS Powernet Communications Pvt.ltd., IN
103.196.222.0/23	135772	POWERNETCOMM-AS Powernet Communications Pvt.ltd., IN
103.196.222.0/24	135772	POWERNETCOMM-AS Powernet Communications Pvt.ltd., IN
103.196.223.0/24	135772	POWERNETCOMM-AS Powernet Communications Pvt.ltd., IN
14.192.52.0/22	135772	POWERNETCOMM-AS Powernet Communications Pvt.ltd., IN
14.192.52.0/23	135772	POWERNETCOMM-AS Powernet Communications Pvt.ltd., IN
14.192.52.0/24	135772	POWERNETCOMM-AS Powernet Communications Pvt.ltd., IN
14.192.53.0/24	135772	POWERNETCOMM-AS Powernet Communications Pvt.ltd., IN
14.192.54.0/23	135772	POWERNETCOMM-AS Powernet Communications Pvt.ltd., IN
14.192.54.0/24	135772	POWERNETCOMM-AS Powernet Communications Pvt.ltd., IN
14.192.55.0/24	135772	POWERNETCOMM-AS Powernet Communications Pvt.ltd., IN
103.91.88.0/24	17426	PRIMENET-AS-AP Primesoftex Ltd, IN
103.91.91.0/24	17426	PRIMENET-AS-AP Primesoftex Ltd, IN
103.121.153.0/24	136284	PTPL-AS-IN Paradise Telecom Pvt Ltd, IN
103.121.154.0/24	136284	PTPL-AS-IN Paradise Telecom Pvt Ltd, IN
103.121.155.0/24	136284	PTPL-AS-IN Paradise Telecom Pvt Ltd, IN
103.211.176.0/24	58659	QCPL-IN Quest Consultancy Pvt Ltd, IN
103.211.177.0/24	58659	QCPL-IN Quest Consultancy Pvt Ltd, IN
103.211.178.0/24	58659	QCPL-IN Quest Consultancy Pvt Ltd, IN
103.211.179.0/24	58659	QCPL-IN Quest Consultancy Pvt Ltd, IN
103.228.44.0/24	58659	QCPL-IN Quest Consultancy Pvt Ltd, IN
103.228.45.0/24	58659	QCPL-IN Quest Consultancy Pvt Ltd, IN
103.228.46.0/24	58659	QCPL-IN Quest Consultancy Pvt Ltd, IN
103.228.47.0/24	58659	QCPL-IN Quest Consultancy Pvt Ltd, IN
139.5.100.0/24	58659	QCPL-IN Quest Consultancy Pvt Ltd, IN
139.5.101.0/24	58659	QCPL-IN Quest Consultancy Pvt Ltd, IN
139.5.102.0/24	58659	QCPL-IN Quest Consultancy Pvt Ltd, IN
139.5.103.0/24	58659	QCPL-IN Quest Consultancy Pvt Ltd, IN
103.133.120.0/24	138277	RADINET-AS-IN Radinet Info Solutions Private Limited, IN
103.133.121.0/24	138277	RADINET-AS-IN Radinet Info Solutions Private Limited, IN
103.133.122.0/24	138277	RADINET-AS-IN Radinet Info Solutions Private Limited, IN
103.133.123.0/24	138277	RADINET-AS-IN Radinet Info Solutions Private Limited, IN
103.105.152.0/24	135692	RAGLOBAL-AS-IN Global Ra Net Services Pvt. Ltd., IN
103.105.153.0/24	135692	RAGLOBAL-AS-IN Global Ra Net Services Pvt. Ltd., IN
103.105.154.0/24	135692	RAGLOBAL-AS-IN Global Ra Net Services Pvt. Ltd., IN
103.105.155.0/24	135692	RAGLOBAL-AS-IN Global Ra Net Services Pvt. Ltd., IN
103.205.152.0/22	134854	RBEI-AS-IN Robert Bosch engineering and business solutions private limited, IN
103.235.164.0/23	135031	RNPL-AS-AP RI Networks Pvt. Ltd., IN
103.235.166.0/23	135031	RNPL-AS-AP RI Networks Pvt. Ltd., IN
103.235.166.0/24	135031	RNPL-AS-AP RI Networks Pvt. Ltd., IN
103.235.167.0/24	135031	RNPL-AS-AP RI Networks Pvt. Ltd., IN
103.73.152.0/23	135031	RNPL-AS-AP RI Networks Pvt. Ltd., IN
103.73.154.0/23	135031	RNPL-AS-AP RI Networks Pvt. Ltd., IN
103.82.148.0/23	135031	RNPL-AS-AP RI Networks Pvt. Ltd., IN
103.82.148.0/24	135031	RNPL-AS-AP RI Networks Pvt. Ltd., IN
103.82.149.0/24	135031	RNPL-AS-AP RI Networks Pvt. Ltd., IN
103.82.150.0/23	135031	RNPL-AS-AP RI Networks Pvt. Ltd., IN
103.82.220.0/23	135031	RNPL-AS-AP RI Networks Pvt. Ltd., IN
103.82.222.0/23	135031	RNPL-AS-AP RI Networks Pvt. Ltd., IN
103.82.222.0/24	135031	RNPL-AS-AP RI Networks Pvt. Ltd., IN
103.82.223.0/24	135031	RNPL-AS-AP RI Networks Pvt. Ltd., IN
103.97.136.0/23	135031	RNPL-AS-AP RI Networks Pvt. Ltd., IN
103.97.136.0/24	135031	RNPL-AS-AP RI Networks Pvt. Ltd., IN
103.97.137.0/24	135031	RNPL-AS-AP RI Networks Pvt. Ltd., IN
103.97.138.0/23	135031	RNPL-AS-AP RI Networks Pvt. Ltd., IN
103.97.138.0/24	135031	RNPL-AS-AP RI Networks Pvt. Ltd., IN
103.97.139.0/24	135031	RNPL-AS-AP RI Networks Pvt. Ltd., IN
103.137.172.0/24	138749	ROBUSTED-AS-IN Robustedge Software And Digital Networks Pvt. Ltd., IN
103.141.227.0/24	138749	ROBUSTED-AS-IN Robustedge Software And Digital Networks Pvt. Ltd., IN
103.118.168.0/24	137622	ROYALCON-AS-IN Royal Connect Solutions Pvt Ltd, IN
103.118.169.0/24	137622	ROYALCON-AS-IN Royal Connect Solutions Pvt Ltd, IN
103.118.170.0/24	137622	ROYALCON-AS-IN Royal Connect Solutions Pvt Ltd, IN
103.118.171.0/24	137622	ROYALCON-AS-IN Royal Connect Solutions Pvt Ltd, IN
150.129.145.0/24	55353	RPNET-AS-AP RAJESH PATEL NET SERVICES PVT. LTD., IN
103.101.109.0/24	136636	RSBI-AS Sharplink Wireless Solution Pvt Ltd, IN
103.85.118.0/24	137138	SAINTERN-AS S A Internet Solution Pvt Ltd, IN
103.85.119.0/24	137138	SAINTERN-AS S A Internet Solution Pvt Ltd, IN
103.148.249.0/24	134027	SAMSUNG-AS SAMSUNG DATA SYSTEMS INDIA PRIVATE LIMITED, IN
103.145.16.0/24	4195	SHAW, US
103.108.148.0/24	133662	SHREENET-AS SHREENET, IN
103.108.149.0/24	133662	SHREENET-AS SHREENET, IN
103.108.150.0/24	133662	SHREENET-AS SHREENET, IN
103.108.151.0/24	133662	SHREENET-AS SHREENET, IN
119.226.35.0/24	9583	SIFY-AS-IN Sify Limited, IN
103.110.148.0/24	137113	SIMPLEX-AS-IN Simplex Broadband Private Limited, IN
103.110.149.0/24	137113	SIMPLEX-AS-IN Simplex Broadband Private Limited, IN
103.110.150.0/24	137113	SIMPLEX-AS-IN Simplex Broadband Private Limited, IN
103.110.151.0/24	137113	SIMPLEX-AS-IN Simplex Broadband Private Limited, IN
157.119.170.0/24	45194	SIPL-AS Syscon Infoway Pvt. Ltd., IN
103.122.132.0/24	136670	SKYLINE0-AS Skyline Broadband Pvt. Ltd., IN
103.122.133.0/24	136670	SKYLINE0-AS Skyline Broadband Pvt. Ltd., IN
103.122.134.0/24	136670	SKYLINE0-AS Skyline Broadband Pvt. Ltd., IN
103.122.135.0/24	136670	SKYLINE0-AS Skyline Broadband Pvt. Ltd., IN
103.234.137.0/24	133317	SNTPL-AS srinagar Net tech P ltd, IN
137.59.0.0/24	133317	SNTPL-AS srinagar Net tech P ltd, IN
137.59.1.0/24	133317	SNTPL-AS srinagar Net tech P ltd, IN
137.59.2.0/24	133317	SNTPL-AS srinagar Net tech P ltd, IN
137.59.3.0/24	133317	SNTPL-AS srinagar Net tech P ltd, IN
103.138.0.0/24	138752	SOBPL-AS Starone Broadband Private Limited, IN
103.138.1.0/24	138752	SOBPL-AS Starone Broadband Private Limited, IN
111.125.244.0/24	132137	SOIPL-IN Shree Omkar Infocom Pvt Ltd, IN
183.87.192.0/24	132137	SOIPL-IN Shree Omkar Infocom Pvt Ltd, IN
183.87.240.0/24	132137	SOIPL-IN Shree Omkar Infocom Pvt Ltd, IN
183.87.241.0/24	132137	SOIPL-IN Shree Omkar Infocom Pvt Ltd, IN
183.87.242.0/24	132137	SOIPL-IN Shree Omkar Infocom Pvt Ltd, IN
183.87.243.0/24	132137	SOIPL-IN Shree Omkar Infocom Pvt Ltd, IN
183.87.244.0/24	132137	SOIPL-IN Shree Omkar Infocom Pvt Ltd, IN
183.87.245.0/24	132137	SOIPL-IN Shree Omkar Infocom Pvt Ltd, IN
183.87.246.0/24	132137	SOIPL-IN Shree Omkar Infocom Pvt Ltd, IN
183.87.247.0/24	132137	SOIPL-IN Shree Omkar Infocom Pvt Ltd, IN
103.132.206.0/24	134916	SOLITON14-AS Soliton NetLink Pvt. Ltd., IN
103.140.106.0/24	135239	SONALI-AS-IN Sonali Internet Services Pvt Ltd, IN
103.140.107.0/24	135239	SONALI-AS-IN Sonali Internet Services Pvt Ltd, IN
103.75.224.0/24	135239	SONALI-AS-IN Sonali Internet Services Pvt Ltd, IN
103.75.225.0/24	135239	SONALI-AS-IN Sonali Internet Services Pvt Ltd, IN
103.75.226.0/24	135239	SONALI-AS-IN Sonali Internet Services Pvt Ltd, IN
103.75.227.0/24	135239	SONALI-AS-IN Sonali Internet Services Pvt Ltd, IN
103.122.168.0/24	138293	SPACETRA-AS-IN Spacetrade Internet Pvt Ltd, IN
103.122.169.0/24	138293	SPACETRA-AS-IN Spacetrade Internet Pvt Ltd, IN
103.132.240.0/24	136327	SPDBROAD-AS-IN Spd Broadband Pvt Ltd, IN
103.132.241.0/24	136327	SPDBROAD-AS-IN Spd Broadband Pvt Ltd, IN
103.119.76.0/24	133279	SPEED4NET-AS SPEED4NET, IN
103.119.78.0/24	133279	SPEED4NET-AS SPEED4NET, IN
103.119.79.0/24	133279	SPEED4NET-AS SPEED4NET, IN
123.253.236.0/24	135810	SRK2016-AS Srk Network, IN
123.253.237.0/24	135810	SRK2016-AS Srk Network, IN
123.253.238.0/24	135810	SRK2016-AS Srk Network, IN
123.253.239.0/24	135810	SRK2016-AS Srk Network, IN
103.146.154.0/24	136365	SSBMAHAD-AS Shri Samarth Broadband, IN
103.119.192.0/24	134866	SSCN-AS Sscn Pvt Ltd, IN
103.119.193.0/24	134866	SSCN-AS Sscn Pvt Ltd, IN
103.119.194.0/24	134866	SSCN-AS Sscn Pvt Ltd, IN
103.119.195.0/24	134866	SSCN-AS Sscn Pvt Ltd, IN
103.140.244.0/24	138762	SSLCPL-AS Sadaa Smartlinks Communication Private Limited, IN
103.141.92.0/23	132757	SSWL-AS-IN Sristi Sanchar Webnet Ltd., IN
103.141.92.0/24	132757	SSWL-AS-IN Sristi Sanchar Webnet Ltd., IN
103.151.198.0/24	140125	STBROADB-AS-IN St Broadband Cable Servise Pvt Ltd, IN
103.151.199.0/24	140125	STBROADB-AS-IN St Broadband Cable Servise Pvt Ltd, IN
103.117.64.0/23	137610	STREAMAX-AS-IN Streamax Broadband Services Pvt. Ltd., IN
103.117.66.0/23	137610	STREAMAX-AS-IN Streamax Broadband Services Pvt. Ltd., IN
103.138.44.0/24	138720	SUDHANAT-AS-IN Sudhana Telecommunications Private Limited, IN
103.121.72.0/24	134886	SUPERSON-AS Super Sonic Broadband Pvt Ltd, IN
103.121.73.0/24	134886	SUPERSON-AS Super Sonic Broadband Pvt Ltd, IN
103.121.74.0/24	134886	SUPERSON-AS Super Sonic Broadband Pvt Ltd, IN
103.121.75.0/24	134886	SUPERSON-AS Super Sonic Broadband Pvt Ltd, IN
103.117.236.0/24	137677	SURROUND-AS Surround Networks Pvt Ltd, IN
103.117.237.0/24	137677	SURROUND-AS Surround Networks Pvt Ltd, IN
103.117.238.0/24	137677	SURROUND-AS Surround Networks Pvt Ltd, IN
103.117.239.0/24	137677	SURROUND-AS Surround Networks Pvt Ltd, IN
103.104.181.0/24	9830	SWIFTONLINE-AS-AP SWIFT ONLINE BORDER AS, IN
103.104.182.0/24	9830	SWIFTONLINE-AS-AP SWIFT ONLINE BORDER AS, IN
103.216.173.0/24	9830	SWIFTONLINE-AS-AP SWIFT ONLINE BORDER AS, IN
103.216.174.0/24	9830	SWIFTONLINE-AS-AP SWIFT ONLINE BORDER AS, IN
103.109.176.0/24	5	SYMBOLICS, US
103.109.177.0/24	5	SYMBOLICS, US
103.109.178.0/24	5	SYMBOLICS, US
103.109.179.0/24	5	SYMBOLICS, US
103.118.112.0/24	5	SYMBOLICS, US
103.118.113.0/24	5	SYMBOLICS, US
103.118.114.0/24	5	SYMBOLICS, US
103.118.115.0/24	5	SYMBOLICS, US
103.144.51.0/24	5	SYMBOLICS, US
103.74.227.0/24	135697	TACHYON-AS-IN Tachyon Communications Pvt Ltd, IN
103.97.210.0/24	135697	TACHYON-AS-IN Tachyon Communications Pvt Ltd, IN
103.97.211.0/24	135697	TACHYON-AS-IN Tachyon Communications Pvt Ltd, IN
103.117.181.0/24	4755	TATACOMM-AS TATA Communications formerly VSNL is Leading ISP, IN
103.208.70.0/24	134674	TATASKYBROADBAND-AS-AP TATA SKY BROADBAND PRIVATE LIMITED, IN
103.142.77.0/24	139480	TBSPL09-AS Tradebulls Securities Private Limited, IN
103.101.24.0/22	136632	TELEVAJR-AS-IN Vajra Telecom Pvt Ltd, IN
103.101.24.0/24	136632	TELEVAJR-AS-IN Vajra Telecom Pvt Ltd, IN
103.101.25.0/24	136632	TELEVAJR-AS-IN Vajra Telecom Pvt Ltd, IN
103.101.26.0/24	136632	TELEVAJR-AS-IN Vajra Telecom Pvt Ltd, IN
103.101.27.0/24	136632	TELEVAJR-AS-IN Vajra Telecom Pvt Ltd, IN
103.136.136.0/24	136336	TICFIBER-AS Thamizhaga Internet Communications Private Limited, IN
103.136.137.0/24	136336	TICFIBER-AS Thamizhaga Internet Communications Private Limited, IN
103.88.76.0/24	136336	TICFIBER-AS Thamizhaga Internet Communications Private Limited, IN
103.88.77.0/24	136336	TICFIBER-AS Thamizhaga Internet Communications Private Limited, IN
103.98.62.0/24	136336	TICFIBER-AS Thamizhaga Internet Communications Private Limited, IN
103.98.63.0/24	136336	TICFIBER-AS Thamizhaga Internet Communications Private Limited, IN
103.132.0.0/24	138276	TYPHOONC-AS Typhoon Communication Pvt. Ltd., IN
103.132.1.0/24	138276	TYPHOONC-AS Typhoon Communication Pvt. Ltd., IN
103.132.2.0/24	138276	TYPHOONC-AS Typhoon Communication Pvt. Ltd., IN
103.132.3.0/24	138276	TYPHOONC-AS Typhoon Communication Pvt. Ltd., IN
103.123.44.0/24	138290	UIO4646-AS Unigro Infranet Online Pvt. Ltd., IN
103.123.45.0/24	138290	UIO4646-AS Unigro Infranet Online Pvt. Ltd., IN
103.123.46.0/24	138290	UIO4646-AS Unigro Infranet Online Pvt. Ltd., IN
103.123.47.0/24	138290	UIO4646-AS Unigro Infranet Online Pvt. Ltd., IN
103.110.172.0/24	137180	UNI6711-AS Unified Voice Communication Private Ltd, IN
103.110.173.0/24	137180	UNI6711-AS Unified Voice Communication Private Ltd, IN
103.110.174.0/24	137180	UNI6711-AS Unified Voice Communication Private Ltd, IN
103.126.62.0/24	138287	UZAINA11-AS Uzaina Business India Pvt Ltd, IN
103.143.36.0/24	139486	VETAL-AS-IN Vetal Hotel And Resort Pvt Ltd, IN
103.139.246.0/24	135781	VIBHUTI-AS-IN Vibhuti Networks Private Limited, IN
103.139.247.0/24	135781	VIBHUTI-AS-IN Vibhuti Networks Private Limited, IN
103.122.60.0/24	133678	VIZAGBROADBAND-AS-IN Vizag Broadband Communications Pvt Ltd, IN
103.122.61.0/24	133678	VIZAGBROADBAND-AS-IN Vizag Broadband Communications Pvt Ltd, IN
103.122.62.0/24	133678	VIZAGBROADBAND-AS-IN Vizag Broadband Communications Pvt Ltd, IN
103.146.228.0/24	139509	VNONET-AS-IN Vno Networks Pvt Ltd, IN
103.146.229.0/24	139509	VNONET-AS-IN Vno Networks Pvt Ltd, IN
103.126.204.0/24	138239	VOISPL-AS-IN Vaishnavi Online Internet Services Pvt. Ltd., IN
103.126.205.0/24	138239	VOISPL-AS-IN Vaishnavi Online Internet Services Pvt. Ltd., IN
103.56.30.0/24	138239	VOISPL-AS-IN Vaishnavi Online Internet Services Pvt. Ltd., IN
103.65.202.0/24	138239	VOISPL-AS-IN Vaishnavi Online Internet Services Pvt. Ltd., IN
103.65.203.0/24	138239	VOISPL-AS-IN Vaishnavi Online Internet Services Pvt. Ltd., IN
103.65.23.0/24	138239	VOISPL-AS-IN Vaishnavi Online Internet Services Pvt. Ltd., IN
103.149.122.0/23	140110	VSSCTVPM-AS-IN Vikram Sarabhai Space Centre, IN
103.149.174.0/24	140157	WAVENS-AS-IN Wave Network Solutions, IN
103.149.175.0/24	140157	WAVENS-AS-IN Wave Network Solutions, IN
103.255.188.0/24	132005	XCELLHOST-IN 209, Laxmi Plaza, IN
103.255.190.0/23	132005	XCELLHOST-IN 209, Laxmi Plaza, IN
103.146.235.0/24	139554	YBRAINI-AS-IN Young Brain India, IN
103.123.72.0/24	138221	YNETT-AS-IN Ynet Telecom Solutions, IN
103.123.73.0/24	138221	YNETT-AS-IN Ynet Telecom Solutions, IN

The issue in total took a much longer time as APNIC/IRINN restored the route object database and ISPs across the world re-generated their filters. Likely it took Tata Communications time between 14:00 to 18:00 UTC / 7:30 pm to 11:30 pm IST on 3rd July 2020 to disable IRR based filters.

Besides many ISPs it also impacted a few banks:
AS136252 – BANK OF BARODA
AS137108 – Bank Of India
AS59197 – Bharatiya Reserve Bank Note Mudran Pvt. Ltd
AS132994 – DENA BANK

I end this post with the hope that your ASN is not listed above.

06 Feb

Alternate to IRINN IRR manual entry / ALTDB

IRINN (Indian Registry for Internet Names and Numbers) is a NIR (National Internet Registry) for India operating under the APNIC RIR (Regional Internet Registry). IRINN is run and managed by NIXI. It’s a decent NIR and was set up in 2012. Indian organisations have the option to either maintain relation with APNIC or with IRINN.

A large number of small networks prefer IRINN because it’s annual charges are 25000 INR / $351 USD against APNIC’s membership fee which is over 2x of that.

There are a couple of key disadvantages of using IRINN:

The membership portal is rather limited and the entire process of creating, updating route objects as well as AS SETs via IRINN is rather a manual process. One raises a ticket and during working days IRINN processes those requests & updates the IRR entries. In backend entries just go in the APNIC’s IRR.
Process of creating/updating/maintaining RPKI ROAs is also rather manual.

As of now there’s not much one can do about #2 other than just following manual process by opening a ticket with IRINN but for #1 if you have a challenge that it’s rather slow to update/change because it is a manual process.

Introduction to IRR’s

IRR or Internet Routing Registry is just the public register for BGP related activities. Logic is that one first publishes what one wants to do and then does it. So I can say I want to originate 2402:b580::/32 from AS58901, publish it one of the publicly visible registers (known as IRRs) and then I actually announce the pool.

So who can run an IRR?

Anyone can! IRRd software is open source and one can use it to set up an IRR server. The old and most widely used IRRd is available here and the new version of IRRd (IRRd version 4) is here which is quite advanced, offers many excellent features. What makes IRRs run by APNIC, ARIN, RIPE, RADB etc popular is the fact that RADB mirrors them all and a large number of tools default to RADB for generating the filtering config. As per data available here, RADB mirrors 23 other IRRs besides serving from its own database. So one can get entry to either of these available IRRs based on relation one has with them for creating the route objects or AS SETs and it just works.

ALTDB

Many people know of RADB which is run by merit. It’s a paid option and many networks use that for maintaining route objects. There’s also a free IRR called ATLDB. It’s free to create an account on it and approval of account is a manual process but once approved, creation/updation of route objects as well as AS SETs is all automated and works via email with a specific syntax. Unfortunately, there’s not much on the ALTDB website except a whois lookup tool, however, if you want to read in detail about IRR as well as using ALTDB, the Fremont Cabal Internet Exchange has an excellent guide on that (here).

The basic logic here is to do following: Create a maintainer object > Define routing policy of the ASN (peers, transit, downstream etc) > Create AS SET (if you have BGP downstream customers) > Create route objects for your IPv4 and IPv6 prefixes > Publish your ASSET on PeeringDB. Again one can follow the detailed steps given on the FCIX website.

Here’s an example of it in action for a test prefix of the pool I use:
2402:b580::/32

As of now, there’s no corresponding route object with it. Here’s a quick check on RADB:

anurag@devops01 ~> whois -h whois.radb.net 2402:b580::/32
%  No entries found for the selected source(s).
anurag@devops01 ~>

As of now, there’s no route object for it. Let’s say I want to start originating from AS58901, so I will put following in a plain text mail and send it to ALTDB email ID (auto-dbm@altdb.net) which processes these requests automatically.

route6:     2402:b580::/32
descr:      Anurag Bhatia R&D Network IPv6 Pool
origin:     AS58901
mnt-by:     MAINT-AS58901
changed:    me@anuragbhatia.com 20200205
source:     ALTDB

It’s important to send email in cleartext. One can check how to do that in a specific email client or web interface one uses. For Gmail the option is here:

I get following in reply from ALTDB:

And now query to RADB gives us:

anurag@devops01 ~> whois -h whois.radb.net 2402:b580::/32
route6:     2402:b580::/32
descr:      Anurag Bhatia R&D Pool
origin:     AS58901
mnt-by:     MAINT-AS58901
changed:    me@anuragbhatia.com 20200205
source:     ALTDB
anurag@devops01 ~>

And here goes the example of creating AS SET: AS-ANURAG. I sent following to the ATLDB:

as-set:     AS-ANURAG
descr:      Anurag Bhatia's AS SET
members:    AS58901
mnt-by:     MAINT-AS58901
changed:    me@anuragbhatia.com 20200205
source:     ALTDB

Upon confirmation, I get when I query RADB:

anurag@devops01 ~> whois -h whois.radb.net AS-ANURAG
as-set:     AS-ANURAG
descr:      Anurag Bhatia's AS SET
members:    AS58901
mnt-by:     MAINT-AS58901
changed:    me@anuragbhatia.com 20200205
source:     ALTDB
anurag@devops01 ~>

Remember if you happen to use ALTDB, make sure to ask IRINN to delete your route objects after you have successfully created them on ALTDB. Duplicate entries just add to the junk in IRR.

Tata – Airtel domestic peering IRR filtering and OpenDNS latency!

Last month I noticed quite high latency with Cisco’s OpenDNS from my home fibre connection. The provider at home is IAXN (AS134316) which is peering with content folks in Delhi besides transit from Airtel.

ping -c 5 208.67.222.222
PING 208.67.222.222 (208.67.222.222) 56(84) bytes of data.
64 bytes from 208.67.222.222: icmp_seq=1 ttl=51 time=103 ms
64 bytes from 208.67.222.222: icmp_seq=2 ttl=51 time=103 ms
64 bytes from 208.67.222.222: icmp_seq=3 ttl=51 time=103 ms
64 bytes from 208.67.222.222: icmp_seq=4 ttl=51 time=103 ms
64 bytes from 208.67.222.222: icmp_seq=5 ttl=51 time=103 ms
--- 208.67.222.222 ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4005ms
rtt min/avg/max/mdev = 103.377/103.593/103.992/0.418 ms

This is bit on the higher side as from Haryana to Mumbai (OpenDNS locations list here). My ISP is backhauling from Faridabad which is probably 6-8ms away from my city and 2-3ms further to Delhi and from there to Mumbai around 30ms. Thus latency should be around ~40-45ms.

Here’s how forward trace looked like

traceroute 208.67.222.222
traceroute to 208.67.222.222 (208.67.222.222), 30 hops max, 60 byte packets
 1  172.16.0.1 (172.16.0.1)  0.730 ms  0.692 ms  0.809 ms
 2  axntech-dynamic-218.140.201.103.axntechnologies.in (103.201.140.218)  4.904 ms  4.314 ms  4.731 ms
 3  10.10.26.1 (10.10.26.1)  6.000 ms  6.414 ms  6.326 ms
 4  10.10.26.9 (10.10.26.9)  6.836 ms  7.135 ms  7.047 ms
 5  nsg-static-77.249.75.182-airtel.com (182.75.249.77)  9.344 ms  9.416 ms  9.330 ms
 6  182.79.243.201 (182.79.243.201)  62.274 ms 182.79.177.69 (182.79.177.69)  66.874 ms 182.79.239.193 (182.79.239.193)  61.297 ms
 7  121.240.1.201 (121.240.1.201)  85.789 ms  82.250 ms  79.591 ms
 8  172.25.81.134 (172.25.81.134)  110.049 ms 172.31.29.245 (172.31.29.245)  114.350 ms  113.673 ms
 9  172.31.133.210 (172.31.133.210)  112.598 ms 172.19.138.86 (172.19.138.86)  114.889 ms 172.31.133.210 (172.31.133.210)  113.415 ms
10  115.110.234.50.static.mumbai.vsnl.net.in (115.110.234.50)  125.770 ms  125.056 ms  123.779 ms
11  resolver1.opendns.com (208.67.222.222)  113.648 ms  115.044 ms  106.066 ms

Forward trace looks fine except that latency jumps as soon as we hit Tata AS4755 backbone. OpenDNS connects with Tata AS4755 inside India and announces their anycast prefixes to them. If the forward trace is logically correct but has high latency, it often reflects the case of bad return path. Thus I requested friends at OpenDNS to share the return path towards me. As expected, it was via Tata AS6453 Singapore.

Here’s what Tata AS4755 Mumbai router had for IAXN prefix:

BGP routing table entry for 14.102.188.0/22
Paths: (1 available, best #1, table Default-IP-Routing-Table)
Not advertised to any peer
6453 9498 134316 134316 134316 134316 134316 134316 134316 134316 134316 134316
192.168.203.194 from 192.168.199.193 (192.168.203.194)
Origin IGP, localpref 62, valid, internal, best
Community: 4755:44 4755:97 4755:888 4755:2000 4755:3000 4755:47552 6453:50 6453:3000 6453:3400 6453:3402
Originator: 192.168.203.194, Cluster list: 192.168.199.193 192.168.194.15
Last update: Mon Mar 25 15:26:36 2019

Thus what was happening is this:

Forward path: IAXN (AS134316) > Airtel (AS9498) > Tata (AS4755) > OpenDNS (AS36692)

Return path: OpenDNS (AS36692) > Tata (AS4755) > Tata (AS6453) > Airtel (AS9498) > IAXN (AS134316)

While this may seem like a Tata – Airtel routing issue but it wasn’t. I could see some of the prefixes with a direct path as well. Here’s a trace from Tata AS4755 Mumbai PoP to an IP from a different pool of IAXN:

traceroute to 103.87.46.1 (103.87.46.1), 15 hops max, 60 byte packets
1 * * *
2 172.31.170.210 (172.31.170.210) 0.911 ms 0.968 ms 0.643 ms
3 172.23.78.233 (172.23.78.233) 1.233 ms 0.821 ms 0.810 ms
4 172.17.125.249 (172.17.125.249) 23.540 ms 23.454 ms 23.367 ms
5 115.110.232.174.static.Delhi.vsnl.net.in (115.110.232.174) 49.175 ms 48.832 ms 49.107 ms
6 182.79.153.87 (182.79.153.87) 48.777 ms 182.79.153.83 (182.79.153.83) 49.043 ms 182.79.177.127 (182.79.177.127) 54.879 ms
7 103.87.46.1 (103.87.46.1) 60.865 ms 60.540 ms 60.644 ms

This clearly was fine. So why Tata was treating 103.87.46.0/24 different from 14.102.188.0/22? The reason for that lies in following:

Airtel (AS9498) very likely peers with Tata (AS4755). They do interconnect for sure as we see in traceroutes and my understanding is that it’s based on settlement-free peering for Indian traffic.
Airtel (AS9498) buys IP transit from Tata (AS6453) (besides a few others). Tata AS6453 is carrying the routing announcements to other networks in the transit free zone and that confirms that Airtel (at least technically) has a downstream customer relationship here.
Tata (AS4755) has IRR based filters on peering but not the Tata (AS6453) for it’s downstream. Hence while Tata rejected the route in India, they did accept that in Singapore PoP.
My IP was from prefix 14.102.188.0/22 and there was no valid route object for it at any of key IRRs like ATLDB, APNIC or RADB. But other prefix 103.87.46.0/24 did had a valid route object on APNIC.

Now after almost 10 days of it, my ISP has changed the BGP announcement and announcing 14.102.189.0/24 (which does a valid route object on APNIC). This fixes the routing problem and give me pretty decent latency with OpenDNS:

ping -c 5 208.67.222.222
PING 208.67.222.222 (208.67.222.222): 56 data bytes
64 bytes from 208.67.222.222: icmp_seq=0 ttl=55 time=52.552 ms
64 bytes from 208.67.222.222: icmp_seq=1 ttl=55 time=53.835 ms
64 bytes from 208.67.222.222: icmp_seq=2 ttl=55 time=53.330 ms
64 bytes from 208.67.222.222: icmp_seq=3 ttl=55 time=52.700 ms
64 bytes from 208.67.222.222: icmp_seq=4 ttl=55 time=52.504 ms
--- 208.67.222.222 ping statistics ---
5 packets transmitted, 5 packets received, 0.0% packet loss
round-trip min/avg/max/stddev = 52.504/52.984/53.835/0.518 ms

So if you are a network operator and originating prefixes, please do document them in any of the IRRs. You can do that via IRR of your RIR (APNIC, ARIN etc) or a free IRR like ALTDB. If you have downstreams, make sure to create AS SET, add downstreams ASNs in your AS SET and also include that AS SET on peeringdb for the world to see!

Misc Notes

Posted strictly in my personal capacity and has nothing to do with my employrer.
Thanks for folks from Cisco/OpenDNS for quick replies with relevant data which helped in troubleshooting. 🙂

anuragbhatia.com

DNS, BGP, IPv6 and more!

Tag Archives: BGP Filter