mail.alexanderzeh.de has no NS records.
NS records for this zone are defined at alexanderzeh.de.
NS records for this zone are defined at alexanderzeh.de.
Question and response
Question
dig mail.alexanderzeh.de. NS
Answer
The response has no answer records.
Authority
alexanderzeh.de. 86400 SOA root-dns.netcup.net. dnsadmin.netcup.net. 2025032607 28800 7200 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0