ns2.mcra.fr has no CNAME records.
Question and response
Question
dig ns2.mcra.fr. NS
Answer
The response has no answer records.
Authority
mcra.fr. 242 SOA ns0.mcra.fr. system.ml.mcra.fr. 2026030500 3600 900 604800 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0