CNAME Record
To update your CNAME record on Register.com:
Log into the Account Manager.
Select Domains on the left side of the page.
Select the domain name you want to change.
On the domain page, go down to Advanced Tools.
Click Manage next to Advanced DNS Records.
In the Host Aliases (CNAME Records) section, click the Edit CNAME Records.
Add a CNAME record with the following details:
Host:
wwwValue:
s.multiscreensite.com
Click Continue.
A confirmation page appears that verifies your records were updated. Review the information carefully, and then click Save Changes.
A Records
To update your A records on Register.com:
Log into the Account Manager.
Select Domains on the left side of the page.
Select the domain name you want to change.
On the domain page, go down to Advanced Tools.
Click Manage next to Advanced DNS Records.
In the IP Address (A Records) section, click Edit A Records.
Select the box next to each A Record you need to delete, then click Save Changes on the Confirm DNS Changes page.
To add the new Host and Numeric IP addresses, enter the following information:
First A Record:
Host/Alias: @
Target/Destination: 35.172.94.1
Second A Record:
Host/Alias: @
Target/Destination: 100.24.208.97
If needed, modify the TTL settings, and then click Continue. The TTL default is 7200.
A confirmation page appears that verifies your records were updated. Review the information carefully, and then click Save Changes.
For more information, see How Do I Manage DNS and Advanced DNS Records?