firm239.e.teqbow.de.com has no NS records.
NS records for this zone are defined at teqbow.de.com.
NS records for this zone are defined at teqbow.de.com.
Question and response
Question
dig firm239.e.teqbow.de.com. NS
Answer
The response has no answer records.
Authority
teqbow.de.com. 3601 SOA dns1.registrar-servers.com. hostmaster.registrar-servers.com. 1770918773 43200 3600 604800 3601
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0