Multi-Domain Wildcard Certificates

If you are looking to secure multiple wildcard domains, but want to keep them all under one certificate, look no further than the Multi-Domain Wildcard SSL certificates. Offered by all major Certificate Authorities, these SSL Certificates are a helpful option that will give you the encryption your domains need, while also saving you time and money.


How Multi Domain Wildcard Works

Multi-Domain Wildcard Certificates can secure both fully-qualified domain names and wildcard domains within their SAN entries. The coverage for a Multi-Domain wildcard certificate would look like this:

Common Name:

SAN 1: *

SAN 2:

SAN 3: *

SAN 4:


There are many benefits to a Multi-Domain Wildcard SSL Certificate, as it is one of the most versatile certificates offered.

Some of these benefits include:

  • Secure unlimited sub-domains under multiple domains with one certificate
  • Easily manage and protect all domains with one certificate
  • HTTPS and Security Padlock
  • Availability in DV (Domain Validated) and OV (Organization Validated)
  • Includes a Site Seal


The generation process for a Multi-Domain Wildcard Certificate is simple. One Multi-Domain Wildcard Certificate can secure anywhere from up to 100 to 250 domains, depending on the vendor purchased from. Regardless of the vendor, there is a rule that must always be followed to generate the certificate:

The CSR for a Multi-Domain Wildcard must have a non-wildcard domain to serve as the Common Name.

Once the CSR is generated for this certificate, you can include the additional domains, or SANS. This is where you will put the Wildcard Domains.


Like all SSL Certificates, Multi-Domain Wildcard Certificates have specific things they cannot be used for.

These include:

  • This certificate is not ideal if you do not want separate domains to be related on one certificate.
  • This certificate does not automatically secure the non-www versions of the Wildcard domains.
  • This certificate will not cover the Wildcard version of the Common Name unless specifically requested.

If you’re needing to secure the Wildcard version of the Common Name, you can do so by adding an additional SAN.

If you ever need to remove or add on another domain, you can do so at any point of your certificate’s validity period by reissuing the certificate.

  • 0 Users Found This Useful
     Was this answer helpful?

Related Articles

 Troubleshooting Insecure Content

One of the most common issues site owners run into when installing and SSL certificate and migrating to HTTPS is Insecure Content. This error is produced when content on a secure website is being loaded through a non-secure source. An example...

 How to Check a Certificate’s Expiration Date (Chrome)

Get certificate information on any website in just a few clicks. Checking your SSL certificate’s expiration date on Google Chrome is fairly easy. Depending on which version of Chrome you’re running, it can be done within just a few clicks. Here’s...

 Combining Multiple Intermediate Certificates

Due to the limitations on select browsers and mobile devices, Certificate Authorities often do not have their Intermediate Certificates deployed for various reasons such as size limitations. Without these Intermediate Certificates being either...

 How to Create a .pem File for SSL Certificate Installations

.pem SSL Creation Guide SSL .pem files (concatenated certificate container files), are frequently required for certificate installations when multiple certificates are being imported as one file. This article contains multiple sets of...

 Elliptic Curve Cryptography (ECC) Certificates

Cryptography, the science of encrypting data and information, is the backbone of SSL. Every time you visit a website that is secured by an SSL certificate, your computer works with that website’s server to encrypt and then decipher all data sent...

Powered by WHMCompleteSolution