mail.stb-in-ol.de has no NS records.
NS records for this zone are defined at stb-in-ol.de.
NS records for this zone are defined at stb-in-ol.de.
Question and response
Question
dig mail.stb-in-ol.de. NS
Answer
The response has no answer records.
Authority
stb-in-ol.de. 7200 SOA ns5.kasserver.com. hostmaster.kasserver.com. 2602031031 28800 7200 1209600 7200
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0