spf.sielsystems.nl has no NS records.
NS records for this zone are defined at sielsystems.nl.
NS records for this zone are defined at sielsystems.nl.
Question and response
Question
dig spf.sielsystems.nl. NS
Answer
The response has no answer records.
Authority
sielsystems.nl. 3600 SOA ns1.sielsystems.nl. beheer.sielsystems.nl. 2026030708 3600 600 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0