mx2.teleservice.net has no NS records.
NS records for this zone are defined at teleservice.net.
NS records for this zone are defined at teleservice.net.
Question and response
Question
dig mx2.teleservice.net. NS
Answer
The response has no answer records.
Authority
teleservice.net. 300 SOA ns1.teleservice.net. hostmaster.teleservice.net. 2026031002 14400 3600 604800 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0