Map a google site to a custom domain.
- Click the More Actions button and select Manage Site.
- Click the Web Address tab.
- Enter your custom URL in the Web Address text box, then click the Add button at the top of the page.
Enter your CNAME record using the examples listed in the CNAME record values table and the guidelines below: Name: Enter your custom URL prefix (such as mail or www).
Type: Select CNAME.
Value: Enter ghs.googlehosted.com., making sure to include a trailing dot (.) at the end of the value.
Be aware it may take as long as 72 hours before DNS changes are propagated, depending on the time to live (TTL) that was configured for your records. Until records have been updated worldwide, you will still receive traffic to your old server.
You can check DNS propagation with this tool: