ns.webside.pt has no CNAME records.
Question and response
Question
dig ns.webside.pt. NS
Answer
The response has no answer records.
Authority
webside.pt. 7200 SOA dnsbho1aut02.local. dnsmaster.webside.pt. 2023062129 3600 1800 1209600 7200
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0