mxsin.de.kpn-eurorings.net has no NS records.
NS records for this zone are defined at kpn-eurorings.net.
NS records for this zone are defined at kpn-eurorings.net.
Question and response
Question
dig mxsin.de.kpn-eurorings.net. NS
Answer
The response has no answer records.
Authority
kpn-eurorings.net. 3600 SOA ns1.kpn.net. zonemaster.kpn.com. 2026031901 10800 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0