dns2.futuro.pl has no NS records.
NS records for this zone are defined at futuro.pl.
NS records for this zone are defined at futuro.pl.
Question and response
Question
dig dns2.futuro.pl. NS
Answer
The response has no answer records.
Authority
futuro.pl. 86400 SOA szafir.futuro.pl. dns.netia.pl. 2021111501 3600 1800 1814400 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0