man.poznan.pl has no NS records.
NS records for this zone are defined at poznan.pl.
NS records for this zone are defined at poznan.pl.
Question and response
Question
dig man.poznan.pl. NS
Answer
The response has no answer records.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0