spf.whih.nl has no NS records.
NS records for this zone are defined at whih.nl.
NS records for this zone are defined at whih.nl.
Question and response
Question
dig spf.whih.nl. NS
Answer
The response has no answer records.
Authority
whih.nl. 3600 SOA ns2.whih.nl. hostmaster.whih.nl. 2025090817 28800 3600 1209600 28800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0