ns2.sitel.net.pl has no NS records.
NS records for this zone are defined at sitel.net.pl.
NS records for this zone are defined at sitel.net.pl.
Question and response
Question
dig ns2.sitel.net.pl. NS
Answer
The response has no answer records.
Authority
sitel.net.pl. 3600 SOA ns1.e-strefa.net. admin.sitel.net.pl. 2025121801 300 1800 3600000 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0