mx2.gnm.net has no NS records.
NS records for this zone are defined at gnm.net.
NS records for this zone are defined at gnm.net.
Question and response
Question
dig mx2.gblnet.net. NS
Answer
The response has no answer records.
Authority
gblnet.net. 86400 SOA ns.gblnet.net. vvv.gblnet.net. 2026022701 10800 1200 1209600 259200
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0