A CNAME (Canonical name) record, is basically an alias or nickname for another domain. It is often used instead of an A record to point different hostnames to the same location. The difference between the record types is that an A record always points to an IP address, while a CNAME always points to another name.
A CNAME is often used to point a subdomain on your domain to an external service, like for example Office 365 or Blogger.
Create a CNAME record on your domain
- Log into the one.com Control Panel.
- Click DNS settings on the Advanced settings tile.
- Go to DNS records.
- Under create new record, click CNAME.
- Enter the following details:
- Hostname: The subdomain (required) that will become the alias, for example, www.
- Is an alias of: The domain name that you want to create the alias of, this can't be an IP address.
- TTL: Optionally. If you leave it empty, it will use the default time 3600 seconds.
- Click Create record to save your settings.
Example: In the screenshot below we are making blog.one-example.net into an alias of ghs.google.com. So we can serve our Blogger blog on our own domain. The TTL is left empty, meaning it will by default set to 3600.