mx2.itsec.md has no NS records.
NS records for this zone are defined at itsec.md.
NS records for this zone are defined at itsec.md.
Question and response
Question
dig mx2.itsec.md. NS
Answer
The response has no answer records.
Authority
itsec.md. 10800 SOA ns.itsec.md. dns-public.itsec.md. 2026021101 10800 3600 2419200 38400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0