*.preview.theory7.net has no NS records.
NS records for this zone are defined at theory7.net.
NS records for this zone are defined at theory7.net.
Question and response
Question
dig *.preview.theory7.net. NS
Answer
The response has no answer records.
Authority
theory7.net. 3600 SOA dns.theory7.net. hostmaster.theory7.net. 2026020504 10800 3600 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0