0000-auth.ficolo.net has no CNAME records.
Question and response
Question
dig 0000-auth.ficolo.net. NS
Answer
The response has no answer records.
Authority
ficolo.net. 1789 SOA dns1.ficolo.net. hostmaster.ficolo.net. 2020091400 28800 7200 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0