central.bbsr.fr has no CNAME records.
Question and response
Question
dig central.bbsr.fr. NS
Answer
The response has no answer records.
Authority
bbsr.fr. 3 SOA dns100.ovh.net. tech.ovh.net. 2026021100 86400 3600 3600000 60
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0