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  2. Public Trust and Certificates
  3. What is a Wildcard Certificate?
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Public Trust & Certificates

What is a Wildcard
SSL Certificate?

What is a Wildcard SSL Certificate?

A Wildcard SSL Certificate is a single certificate with a wildcard character (*) in the domain name field. This allows the certificate to secure a single domain and multiple subdomains.

For example, a Wildcard SSL Certificate for *.example.com, could be used for www.example.com, mail.example.com, store.example.com, in addition to any other subdomain name.

How Does a Wildcard Certificate Work?

Our ¶ºÒõ¹Ý Wildcard TLS/SSL Certificates provide protection for unlimited first-level sub-domains of the domain name you specify in your Certificate Signing Request (CSR).

For example, you get a ¶ºÒõ¹Ý TLS/SSL Wildcard Certificate for *.your_domain.com.

With this certificate, you can secure unlimited first-level subdomains, such as: www.your_domain.com mail.your_domain.com admin.your_domain.com sales.your_domain.com europe.your_domain.com anything.your_domain.com

The asterisk (*) in the common name serves as the wildcard character that allows the certificate to take on any first-level subdomain name. The value assumed by the asterisk (*) must not have a period or 'dot' in it (i.e., your *.your_domain.com does not secure anything.anything.your_domain.com as it is a second-level subdomain of your_domain.com). This is why we say that the wildcard certificate covers unlimited first-level subdomains.

What is the Price of a Wildcard SSL Certificate?

The price of a Wildcard SSL Certificate is determined based on the number of subdomains you secure and the number of years of coverage you select. With ¶ºÒõ¹Ý you can secure up to 250 subdomains. Check the wildcard SSL certificate price or by logging into your ¶ºÒõ¹Ý CertCentral® account.


What is the Difference Between a Multi-Domain SAN Certificate and a Wildcard SAN SSL Certificate?

A Multi-Domain subject alternative name (SAN) Certificate, also known as a multi-domain certificate, can support multiple domains and multiple host names with domains. Multi-Domain SAN SSL certificates are more flexible than Wildcard SAN Certificates since they are not limited to a single domain. Currently, all ¶ºÒõ¹Ý TLS/SSL certificates can be converted to a Wildcard SAN or a Multi-Domain SAN Certificate. Combining the functionality of both allows you to secure a much broader set of domains along with the capability to use them on any number of subdomains.

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