Charter

Reliance Jio orignating Charter's /16 pool

Anurag Bhatia
Isp-Column

Just noticed that Reliance Jio (AS55836) seems to be originating a /16 which is for Charter Communications (AS20115) - 47.35.0.0/16.  

route-views>sh ip bgp 47.35.0.0/16 long | exclude 20115
BGP table version is 18764390, local router ID is 128.223.51.103
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,
              r RIB-failure, S Stale, m multipath, b backup-path, f RT-Filter,
              x best-external, a additional-path, c RIB-compressed,
Origin codes: i - IGP, e - EGP, ? - incomplete
RPKI validation codes: V valid, I invalid, N Not found
     Network          Next Hop            Metric LocPrf Weight Path
 *   47.35.0.0/16     195.208.112.161                        0 3277 3267 174 64049 55836 i
 *                    217.192.89.50                          0 3303 6762 64049 55836 i
 *                    212.66.96.126                          0 20912 1267 64049 55836 i
 *                    162.243.188.2                          0 393406 6453 6762 64049 55836 i
 *                    192.241.164.4                          0 62567 2914 174 64049 55836 i
 *                    129.250.0.11          1007             0 2914 174 64049 55836 i
 *                    104.192.216.1                          0 46450 174 64049 55836 i
 *                    202.93.8.242                           0 24441 3491 3491 174 64049 55836 i
 *                    66.59.190.221                          0 6539 577 6762 64049 55836 i
 *                    144.228.241.130         80             0 1239 174 64049 55836 i
 *                    207.172.6.20             0             0 6079 3356 174 64049 55836 i
 *                    203.62.252.83                          0 1221 4637 174 64049 55836 i
 *                    93.104.209.174                         0 58901 51167 3356 6762 64049 55836 i
     Network          Next Hop            Metric LocPrf Weight Path
 *                    162.250.137.254                        0 4901 174 64049 55836 i
 *                    4.69.184.193             0             0 3356 174 64049 55836 i
 *                    208.51.134.254           1             0 3549 3356 174 64049 55836 i
 *                    89.149.178.10           10             0 3257 174 64049 55836 i
 *                    66.110.0.86                            0 6453 6762 64049 55836 i
 *                    134.222.87.1           650             0 286 174 64049 55836 i
 *                    95.85.0.2                              0 200130 6453 174 64049 55836 i
 *                    12.0.1.63                              0 7018 174 64049 55836 i
 *                    173.205.57.234                         0 53364 3257 174 64049 55836 i
 *                    206.24.210.80                          0 3561 174 64049 55836 i
 *                    5.101.110.2                            0 202018 2914 174 64049 55836 i
 *                    207.172.6.1              0             0 6079 3356 174 64049 55836 i
 *                    154.11.98.225            0             0 852 174 64049 55836 i
 *                    194.85.40.15                           0 3267 174 64049 55836 i
 *                    208.74.64.40                           0 19214 174 64049 55836 i
 *                    209.124.176.223                        0 101 101 174 64049 55836 i
 *                    66.185.128.48            6             0 1668 174 64049 55836 i
 *                    203.181.248.168                        0 7660 2516 6762 64049 55836 i
 *                    202.232.0.2                            0 2497 701 6762 64049 55836 i
 *                    103.247.3.45                           0 58511 64049 55836 i
 *                    193.0.0.56                             0 3333 1103 64049 55836 i
     Network          Next Hop            Metric LocPrf Weight Path
 *                    80.241.176.31                          0 20771 47872 64049 55836 i
 *>                   216.218.252.164                        0 6939 64049 55836 i
 *                    132.198.255.253                        0 1351 174 64049 55836 i
 *                    103.255.249.22                         0 58443 45177 64049 55836 i
 *                    114.31.199.1                           0 4826 174 64049 55836 i
route-views>

This shows Reliance Jio’s ASN AS55836 announcing 47.35.0.0/16. Charter Communications (AS20115) is originating multiple of /18s out of the same pool.  

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Private IPs in Public routing

Anurag Bhatia
Networking

Sometimes we see interesting IP’s in traceroute & they confuse lot of people.

I have seen this topic in discussion twice on NANOG and once on Linux Delhi user group. 

OK - let’s pick an example: 

anurag:~ anurag$ traceroute 71.89.140.11
traceroute to 71.89.140.11 (71.89.140.11), 64 hops max, 52 byte packets
1 router (10.10.0.1) 1.176 ms 0.993 ms 0.941 ms
2 117.220.160.1 (117.220.160.1) 20.626 ms 29.101 ms 19.216 ms
3 218.248.169.122 (218.248.169.122) 23.983 ms 43.850 ms 45.057 ms
4 115.114.89.21.static-mumbai.vsnl.net.in (115.114.89.21) 118.094 ms 81.447 ms 66.838 ms
5 172.31.16.193 (172.31.16.193) 115.979 ms 90.947 ms 90.491 ms
6 ix-4-2.tcore1.cxr-chennai.as6453.net (180.87.36.9) 95.778 ms 98.601 ms 98.920 ms
7 if-5-2.tcore1.svw-singapore.as6453.net (180.87.12.53) 321.174 ms
if-3-3.tcore2.cxr-chennai.as6453.net (180.87.36.6) 331.386 ms 326.671 ms
8 if-6-2.tcore2.svw-singapore.as6453.net (180.87.37.14) 317.442 ms
if-2-2.tcore2.svw-singapore.as6453.net (180.87.12.2) 334.647 ms 339.289 ms
9 if-7-2.tcore2.lvw-losangeles.as6453.net (180.87.15.26) 318.003 ms 328.334 ms 309.234 ms
10 if-2-2.tcore1.lvw-losangeles.as6453.net (66.110.59.1) 306.500 ms 326.194 ms 341.537 ms
11 66.110.59.66 (66.110.59.66) 315.431 ms 330.417 ms 308.372 ms
12 dls-bb1-link.telia.net (213.155.136.40) 354.768 ms 344.360 ms 357.050 ms
13 chi-bb1-link.telia.net (80.91.248.208) 352.479 ms 358.751 ms 359.987 ms
14 cco-ic-156108-chi-bb1.c.telia.net (213.248.89.46) 367.467 ms 370.482 ms 377.280 ms
15 bbr01aldlmi-bue-4.aldl.mi.charter.com (96.34.0.98) 387.269 ms 385.362 ms 365.694 ms
16 crr02aldlmi-bue-2.aldl.mi.charter.com (96.34.2.11) 375.275 ms 375.356 ms 371.621 ms
17 dtr02grhvmi-tge-0-1-0-0.grhv.mi.charter.com (96.34.34.83) 383.539 ms 371.817 ms 383.804 ms
18 dtr02whthmi-tge-0-1-0-0.whth.mi.charter.com (96.34.34.85) 384.400 ms 391.197 ms 393.340 ms
19 dtr02ldngmi-tge-0-1-0-0.ldng.mi.charter.com (96.34.34.87) 371.192 ms 375.679 ms 378.457 ms
20 acr01mnplmi-tge-0-0-0-3.mnpl.mi.charter.com (96.34.40.75) 364.824 ms 385.534 ms 374.401 ms
21 * *^C
anurag:~ anurag$

Let’s try pinging IP on 14th hop (which is with a major backbone Telia) - 213.248.89.46

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