spf.protection.outlook.de has no NS records.
NS records for this zone are defined at protection.outlook.de.
NS records for this zone are defined at protection.outlook.de.
Question and response
Question
dig spf.protection.outlook.de. NS
Answer
The response has no answer records.
Authority
protection.outlook.de. 300 SOA ns1-36.azure-dns.com. hostmaster.o365filtering.com. 2024031911 10800 3600 604800 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0