[Ilugc] Check you DNS

Balasubramaniam Natarajan bala150985 at gmail.com
Sat Jul 7 18:17:54 IST 2012

> The "root" DNS servers provide the NS for the TLD and the first level
> sub domains under each TLD.
> If a domain name is not cached then the NS records are fetched
> starting @ the "root" servers.   The file "root.hint" in bind
> installation is the provide the IP numbers for the "root" servers.

Okay I did not know that it comes with a preloaded set of IP addresses.

I just downloaded root.zone to find out the same :-)
$ cat root.zone | grep
"[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}" | head -n5
a.nic.ac.        172800    IN    A
b.nic.ac.        172800    IN    A
dinis.ad.        172800    IN    A
dns2.ad.        172800    IN    A
dns3.ad.        172800    IN    A

> Read up on how DNS works - really if you are serious about it.  There
> are a couple of informative O'Reilly books on the subject.  Although,
> for starters you can start here <http://www.tldp.org> and browse
> through the HowTos index.
Sure will give it a try.

Balasubramaniam Natarajan

More information about the ilugc mailing list