netra.gdansk.sprint.pl has no NS records.
NS records for this zone are defined at gdansk.sprint.pl.
NS records for this zone are defined at gdansk.sprint.pl.
Question and response
Question
dig netra.gdansk.sprint.pl. NS
Answer
The response has no answer records.
Authority
gdansk.sprint.pl. 86400 SOA netra.gdansk.sprint.pl. admin.gdansk.sprint.pl. 2018061406 28800 7200 604800 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0