spf.vse.de has no NS records.
NS records for this zone are defined at vse.de.
NS records for this zone are defined at vse.de.
Question and response
Question
dig spf.vse.de. NS
Answer
The response has no answer records.
Authority
vse.de. 3600 SOA ns1.vsenet.net. hostmaster.vsenet.net. 2026012101 28800 3600 1728000 3600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0