ns2.dnsx1.pl has no NS records.
NS records for this zone are defined at dnsx1.pl.
NS records for this zone are defined at dnsx1.pl.
Question and response
Question
dig ns2.dnsx1.pl. NS
Answer
The response has no answer records.
Authority
dnsx1.pl. 300 SOA ns1.dnsx1.pl. noc.leniwiec.biz. 2015010108 1200 300 604800 300
Additional
. 0 OPT ; payload 1280, xrcode 0, version 0, flags 0