DNS

Yesterday I called MTS Data Card support but their IVRS system was failing in giving me my balance details. Eventually I decided to email their support and glad to say support email was also easily available on their website.

Today I saw acknowledgement mail in spam. No big deal but I usually dig around genuine mails which go in spam to find exact cause. In this case I found mail was sent to me from  customercare.del@mtsindia.in and the server which relayed this mail was:

DNS Lesson time!

Today, I was just looking into website - ideaisp.net

This site is overall pretty interesting as it’s showing various upstream links of IDEA Cellular ISP backbone. Seems like they are just using Cable & Wireless for most of International bandwidth although IDEA ISP is not functional yet. Anyways, this post is not about their geeky upstream peers & routing tables but how bad one can setup DNS! :)

Today I was showing a good friend - how root servers are working and how they are connected. I was explaining him anycasting and gave example of k-root node which is hosted in Delhi by niXi i.e National Internet Exchange of India. I was totally stunned to find traceroute result to anycasting based block of k-root-node hosted in Delhi from my BSNL connection. Checkout traceroute here.

It seems like BSNL has gone totally wild in listening to announcements for 193.0.14.0/23 via ASN 25152 which is of  RIPE-NCC-K-ROOT nodes.