dns02.actualize.es has no CNAME records.
Question and response
Question
dig dns02.actualize.es. NS
Answer
The response has no answer records.
Authority
actualize.es. 743 SOA dns01.ono.com. actualize.es. 2024061701 3600 3600 432000 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0