dns4.ghostnet.de has no NS records.
NS records for this zone are defined at ghostnet.de.
NS records for this zone are defined at ghostnet.de.
Question and response
Question
dig dns4.ghostnet.de. NS
Answer
The response has no answer records.
Authority
ghostnet.de. 1800 SOA phil.ns.cloudflare.com. dns.cloudflare.com. 2398712117 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0