mailin01.teamnet.de has no NS records.
NS records for this zone are defined at teamnet.de.
NS records for this zone are defined at teamnet.de.
Question and response
Question
dig mailin01.teamnet.de. NS
Answer
The response has no answer records.
Authority
teamnet.de. 3600 SOA ns1.teamnet.de. domainmaster.teamnet.de. 2026031303 10800 1800 604800 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0