What Are CNAME Records?

When do I use a CNAME record?

You will use a CNAME record when you want a subdomain to point to another website address. This will send visitors who visit the subdomain in the CNAME record to a different website address.


It is not possible to use a CNAME record on just the bare domain (“example.com”). It must be on a subdomain (“something.example.com”). This is a technical constraint of this resource record type.

If you want to point the domain name itself to another website, and not just a subdomain, you need to use an alias record.

Can I have an example?

Here are a couple examples:

blog 10800 IN CNAME exampleblogname.wordpress.com.

www 10800 IN CNAME exampleblogname.wordpress.com.

If your domain name is example.com, the first example above will send visitors who go to blog.example.com to the wordrpess blog at exampleblogname.wordpress.com.

Likewise, the second example will also send visitors to www.example.com to the same wordpress blog.


The final dot (.) at the end must be included for the record to function.