atmail.pantel.co has no NS records.
NS records for this zone are defined at pantel.co.
NS records for this zone are defined at pantel.co.
Question and response
Question
dig atmail.pantel.co. NS
Answer
The response has no answer records.
Authority
pantel.co. 1800 SOA ns1.p68.dns.oraclecloud.net. hostmaster.pantel.co. 6 3600 600 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0