Change CNAME to point to a hosted server, using public IP address.

Question

I currently have a CNAME, for example, portal.mycompany.net which points back to my companies public IP address and name is translated at the firewall to access our web server. I need to change this so portal.mycompany.net now point to a public IP address of a company that is now hosting that site. Would I simply just change the 'value/route traffic to' field and enter the public address where this now hosted or do I need to change the CNAME 'type' to something different? Thanks for any help.

Answer

To expand on the answer by rePost-User-7136343, you can use an A record (or AAAA for IPv6) to point a DNS name to an IP address.

Answer

****Answers****
The data on a CNAME record must be always another DNS name - that's the fundamental point of a CNAME record.
If you look at the RFC 1034, the data in a CNAME should be:

CNAME           -                                               a domain name.

Even though, if you put an public IP which sometimes works, but that is not the purpose of CNAME. CNAME is designed and implemented to be a DNS alias; it has no conception of having a public IP address in that data field. Please look at the link for futher information:
https://serverfault.com/questions/377934/can-i-use-cname-with-ip-address-why-if-works-sometimes

Change CNAME to point to a hosted server, using public IP address.

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