mx.biaman.pl has no NS records.
NS records for this zone are defined at biaman.pl.
NS records for this zone are defined at biaman.pl.
Question and response
Question
dig mx.biaman.pl. NS
Answer
The response has no answer records.
Authority
biaman.pl. 3600 SOA dns.man.bialystok.pl. root.dns.man.bialystok.pl. 2025121500 10800 1200 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0