mail1.tvkhajnowka.pl has no NS records.
NS records for this zone are defined at tvkhajnowka.pl.
NS records for this zone are defined at tvkhajnowka.pl.
Question and response
Question
dig mail1.tvkhajnowka.pl. NS
Answer
The response has no answer records.
Authority
tvkhajnowka.pl. 3600 SOA ns1.nazwa.pl. biuro.nazwa.pl. 2008133227 28800 7200 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0