tt.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 tt.lewtelnet.de. NS
Answer
The response has no answer records.
Authority
lewtelnet.de. 86400 SOA ns1.lewtelnet.de. hostmaster.lewtelnet.de. 2026030420 28800 7200 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0