auth-dns2.b621.net has no NS records.
NS records for this zone are defined at b621.net.
NS records for this zone are defined at b621.net.
Question and response
Question
dig auth-dns2.b621.net. NS
Answer
The response has no answer records.
Authority
b621.net. 3600 SOA rdns1.benjojo.co.uk. ben.benjojo.co.uk. 3248 7200 3600 1209600 30
Additional
. 0 OPT ; payload 1280, xrcode 0, version 0, flags 0