A CNAME record, also known as a Canonical Name record, is a type of DNS record that maps an alias to a canonical domain name. This means that when a user enters the alias into their browser, they will be redirected to the canonical domain name. CNAME records are often used to create subdomains, such as “www.example.com” or “blog.example.com”.
There are several reasons why you might want to check CNAME records. For example, you might want to verify that a subdomain is pointing to the correct canonical domain name. Or, you might want to troubleshoot a problem with a website that is not loading properly. Checking CNAME records is a relatively simple process, and there are a number of online tools that can help you do it.