spf.tld.pl has no NS records.
NS records for this zone are defined at tld.pl.
NS records for this zone are defined at tld.pl.
Question and response
Question
dig spf.tld.pl. NS
Answer
The response has no answer records.
Authority
tld.pl. 3600 SOA ns1.tld.pl. admin.tld.pl. 2026022401 10800 1800 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0