mail1.tellurian.com has no NS records.
NS records for this zone are defined at tellurian.com.
NS records for this zone are defined at tellurian.com.
Question and response
Question
dig mail1.tellurian.com. NS
Answer
The response has no answer records.
Authority
tellurian.com. 3600 SOA ns1.tellurian.net. hostmaster.tellurian.net. 2023092302 7200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0