ninthgate.bydgoszcz.sprint.pl has no NS records.
NS records for this zone are defined at sprint.pl.
NS records for this zone are defined at sprint.pl.
Question and response
Question
dig ninthgate.bydgoszcz.sprint.pl. NS
Answer
The response has no answer records.
Authority
bydgoszcz.sprint.pl. 3600 SOA ninthgate.bydgoszcz.sprint.pl. root.bydgoszcz.sprint.pl. 2016031101 43200 7200 2419200 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0