backup.supermedia.pl has no NS records.
NS records for this zone are defined at supermedia.pl.
NS records for this zone are defined at supermedia.pl.
Question and response
Question
dig backup.supermedia.pl. NS
Answer
The response has no answer records.
Authority
supermedia.pl. 600 SOA dns1.supermedia.pl. dns.supermedia.pl. 2026030501 14400 7200 28800 7200
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0