smtp1.tor.radiant.net has no NS records.
NS records for this zone are defined at tor.radiant.net.
NS records for this zone are defined at tor.radiant.net.
Question and response
Question
dig smtp1.tor.radiant.net. NS
Answer
The response has no answer records.
Authority
tor.radiant.net. 3600 SOA mrhmondr03-dnsaut-01.osc.tac.net. dnsadmin2.telus.com. 3 900 7200 3600000 3600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0