adhap51a.dsl.lasotel.fr has no CNAME records.
Question and response
Question
dig adhap51a.dsl.lasotel.fr. NS
Answer
The response has no answer records.
Authority
dsl.lasotel.fr. 722 SOA ns1.lasotel.net. dns.lasotel.net. 2022010601 21600 3600 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0