mx2.wolterskluwer.pl has no NS records.
NS records for this zone are defined at wolterskluwer.pl.
NS records for this zone are defined at wolterskluwer.pl.
Question and response
Question
dig mx2.wolterskluwer.pl. NS
Answer
The response has no answer records.
Authority
wolterskluwer.pl. 3600 SOA ns1.domena.pl. hosting.agnat.pl. 2020080228 7200 1800 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0