mx1.standard24.net has no NS records.
NS records for this zone are defined at standard24.net.
NS records for this zone are defined at standard24.net.
Question and response
Question
dig mx1.standard24.net. NS
Answer
The response has no answer records.
Authority
standard24.net. 300 SOA x.ns.joker.com. hostmaster.joker.com. 2025111452 14400 3600 1209600 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0