mail.polygen.com.pl has no NS records.
NS records for this zone are defined at polygen.com.pl.
NS records for this zone are defined at polygen.com.pl.
Question and response
Question
dig mail.polygen.com.pl. NS
Answer
The response has no answer records.
Authority
polygen.com.pl. 60 SOA dns100.ovh.net. tech.ovh.net. 2026021800 86400 3600 3600000 60
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0