pk-mail.lewtelnet.de has no NS records.
NS records for this zone are defined at lewtelnet.de.
NS records for this zone are defined at lewtelnet.de.
Question and response
Question
dig pk-mail.lewtelnet.de. NS
Answer
The response has no answer records.
Authority
lewtelnet.de. 86400 SOA ns1.lewtelnet.de. hostmaster.lewtelnet.de. 2026031512 28800 7200 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0