mxout01hhb.1und1.net has no NS records.
NS records for this zone are defined at 1und1.net.
NS records for this zone are defined at 1und1.net.
Question and response
Question
dig mxout01hhb.1und1.net. NS
Answer
The response has no answer records.
Authority
1und1.net. 8640 SOA dnsdb.versatel.de. hostmaster.versatel.de. 2026031106 21600 3600 604800 8640
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0