I tried to make a DNS trace request (taking Oxford's website
www.ox.ac.uk as an example) starting from Google's DNS
220.127.116.11. I can successfully get the result and the route was via the country level DNS
However, when I tried to ask
nsa.nic.uk directly, there is no route shown. Is that normal and why didn't it show the result?
Thanks in advance!
Command 1 (asking Googld DNS):-
$ dig +trace www.ox.ac.uk @18.104.22.168
Command 1 Result (get route successfully):-
22.214.171.124 (Google DNS)
Command 2 (asking
$ dig +trace www.ox.ac.uk @126.96.36.199
Command 2 Result (get no route):-
Received 28 bytes from 188.8.131.52#53(184.108.40.206) in 79 ms