smtp.bytetrust.net has no NS records.
NS records for this zone are defined at bytetrust.net.
NS records for this zone are defined at bytetrust.net.
Question and response
Question
dig smtp.bytetrust.net. NS
Answer
The response has no answer records.
Authority
bytetrust.net. 3600 SOA dns12.ovh.net. tech.ovh.net. 2026022709 86400 3600 3600000 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0