spf.gets.pl has no NS records.
NS records for this zone are defined at gets.pl.
NS records for this zone are defined at gets.pl.
Question and response
Question
dig spf.gets.pl. NS
Answer
The response has no answer records.
Authority
gets.pl. 3600 SOA ns1.domena.pl. hosting.agnat.pl. 2010093001 7200 1800 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0