relay.rzone.de has no NS records.
NS records for this zone are defined at rzone.de.
NS records for this zone are defined at rzone.de.
Question and response
Question
dig relay.rzone.de. NS
Answer
The response has no answer records.
Authority
rzone.de. 3600 SOA karlsruhe.nic.xlink.net. de-domain.xlink.net. 2026022200 3600 7200 604800 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0