web1.spf.checkdomain.de has no NS records.
NS records for this zone are defined at spf.checkdomain.de.
NS records for this zone are defined at spf.checkdomain.de.
Question and response
Question
dig web1.spf.checkdomain.de. NS
Answer
The response has no answer records.
Authority
spf.checkdomain.de. 300 SOA ns.checkdomain.de. hostmaster.checkdomain.de. 2020092802 40000 7200 604800 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0