On 2013-05-03 15:49 , Ambauen Daniel wrote: [..]
Traceroute from our gatway to SWITCH the IP 46.239.64.34 is not reachable.
And thus likely a transit issue, not really a DNS issue (though having both DNS servers in the same /24 is ... of course).
[..]
12 availo-ic-151342-kbn-b3.c.telia.net (80.239.128.170) (AS 559) 33.115 ms 33.063 ms 32.829 ms 13 te3-1-r72.cr0-r74.shg5-got.no.p80.net (82.96.1.53) (AS 559) 36.462 ms 36.371 ms 44.196 ms 14 94.136.70.42 (94.136.70.42) (AS 559) 36.686 ms 35.728 ms 36.002 ms 15 * * *
But the last hop 94.136.70.42 before 46.239.64.34 is reachable from our side.
Which likely means that they cannot reach your prefix, as you do have a route towards them. (though that is likely, filtering and other many problems can also be the case of course)
[..]
The entire subnet 46.239.64.34/24 is not reachable from my site.
And hence why neither DNS or anything else that is hosted on it works.
Best to contact SWITCH, who are effectively your transit, and let them contact Telia and then likely P80 who can figure out the next step where it goes wrong.
Greets, Jeroen