Should I include www. in the common name or not?

Most certificates are used for public websites. These websites are commonly reachable via both as well as just

A certificate will only include a single hostname, the value that you insert into the common name of the CSR. This means that a certificate ordered for will normally not work for

BUT the certificate authorities have implemented a method to make sure that you do not need a multi-domain certificate or multiple certificates for a single website!

It does not matter if you insert the common name with www or without www, both versions will be included in the certificate.

After the certificate has been delivered the certificate authorities will automatically include or as an additional name in the certificate.*


 *Please be advised that if chosen hostname already contains a subdomain (for example, or the issued certificate will only protect a single hostname, i.e. or


* this is only valid for single domain certificates. This is not the case for multidomein certificates. If you request a multidomein ssl, you need to include both www and non-www domains in the list of domains.


Was this article helpful?
0 out of 0 found this helpful
Have more questions? Submit a request


Please sign in to leave a comment.