For what it's worth, I experienced same outage, yesterday at 16:05 GMT.
I thought it was a problem with my provider, since resolving via 8.8.8.8 worked.
Problem was solved at 16:15 GMT. Issue re-appeared shortly thereafter.
C:\Users\Admin>nslookup 968a09baxxxx.sn.mynetname.net 82.197.196.182
Server: dnscache1.tweakdsl.nl
Address: 82.197.196.182
DNS request timed out.
timeout was 2 seconds.
DNS request timed out.
timeout was 2 seconds.
*** Request to dnscache1.tweakdsl.nl timed-out
C:\Users\Admin>nslookup 968a09baxxxx.sn.mynetname.net 82.197.196.183
Server: dnscache2.tweakdsl.nl
Address: 82.197.196.183
*** dnscache2.tweakdsl.nl can't find 968a09baxxxx.sn.mynetname.net: Server failed
Via Google:
C:\Users\Admin>nslookup 968a09baxxxx.sn.mynetname.net 8.8.8.8
Server: google-public-dns-a.google.com
Address: 8.8.8.8
Non-authoritative answer:
Name: 968a09baxxxx.sn.mynetname.net
Address: 82.197.xxx.xxx