rdns2.internetx.de has no NS records.
NS records for this zone are defined at internetx.de.
NS records for this zone are defined at internetx.de.
Question and response
Question
dig rdns2.internetx.de. NS
Answer
The response has no answer records.
Authority
internetx.de. 86400 SOA nsa.domain-robot.org. support.internetx.com. 2025030500 43200 7200 1209600 86400
Additional
. 0 OPT ; payload 1400, xrcode 0, version 0, flags 0