mx.polonus-tel.com.pl has no NS records.
NS records for this zone are defined at polonus-tel.com.pl.
NS records for this zone are defined at polonus-tel.com.pl.
Question and response
Question
dig mx.polonus-tel.com.pl. NS
Answer
The response has no answer records.
Authority
polonus-tel.com.pl. 3600 SOA ns1.domena.pl. hosting.agnat.pl. 2014121516 7200 1800 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0