rumigny.jb80.net has no CNAME records.
Question and response
Question
dig rumigny.jb80.net. NS
Answer
The response has no answer records.
Authority
jb80.net. 5408 SOA dns17.ovh.net. tech.ovh.net. 2025021900 86400 3600 3600000 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0