mailgw2.knv.de has no NS records.
NS records for this zone are defined at knv.de.
NS records for this zone are defined at knv.de.
Question and response
Question
dig mailgw2.knv.de. NS
Answer
The response has no answer records.
Authority
knv.de. 28800 SOA dns1.cscdns.net. hostmaster.cscdns.net. 2026010903 14400 7200 1209600 28800
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0