_spf2.leon.pl has no NS records.
NS records for this zone are defined at leon.pl.
NS records for this zone are defined at leon.pl.
Question and response
Question
dig _spf2.leon.pl. NS
Answer
The response has no answer records.
Authority
leon.pl. 43200 SOA ns1.leon.pl. admin.leon.pl. 2026020902 3600 1200 2419200 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0