@Infinity check this out:
(Sub)domain Type Target
mywebsite.nl A 184.108.40.2064
*.mywebsite.nl CNAME mywebsite.nl
myproduct.nl CNAME mywebsite.nl
mywebsite.be CNAME mywebsite.nl
DNS server resolves the domain names
Assuming you have the subdomain provider.mywebsite.nl which points to networking4all.com
When a visitor goes to provider.mywebsite.nl, the DNS server will find the CNAME-record networking4all.com.
The DNS server will look up the new name networking4all.com
The A-record for networking4all.com provides the corresponding IP-asdress.
The visitor arrives at networking4all.com
The extra lookup for the CNAME > New Name > IP-address, delays the process with a few extra milliseconds
> You can not create a CNAME-record for the main domain name (mywebsite.nl) itself, this must be an A-record
MX- or NS-records may never point to a CNAME record.
I found this info by mistake on https://www.networking4all.com/en/support/domain+names/dns/cname-records/
I am not a DNS expert but seems that before we can cname the WWW or other subdomain we should first create the A-record to point the domain towards the propper IP address.
I hope this helps all our issues of pointing the domain.