inventree.gnm.net has no CNAME records.
Question and response
Question
dig inventree.gnm.net. NS
Answer
The response has no answer records.
Authority
gnm.net. 60 SOA ns.gblnet.net. vvv.gnm.net. 2026030401 60 1200 1209600 259200
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0