Multi-Domain Wildcard SSL Certificates

Multi-Domain Wildcard SSL Certificates are the most flexible SSL products on the market. With a single Multi-Domain Wildcard cert, you can secure all your subdomains on multiple domains. These unique, two in one SSL certificates streamline web security management by saving individuals and companies time and money.

Instead of buying multiple Wildcard certs for each of your main domain and subdomains, you can invest in a multi-domain wildcard certificate and protect your entire network of sites. Your costs and efforts will be at a minimum: a one-time purchase and a sole configuration and renewal.

Multi-Domain Wildcard certificates support both Domain Validation and Organization Validation. Whether you have a few basic sites that need encryption, or you’re a medium-sized organization with a network of complex websites, Multi-Domain Wildcard certs are an excellent SSL solution for your projects.

As the most versatile digital certificates in the industry, Multi-Domain Wildcard SSL products offer many web security benefits. But the powerful features don’t stop with encryption. Each Multi-Domain Wildcard cert comes with impressive extras to boost other areas of your sites.

A Multi-Domain Wildcard SSL certificate will secure multiple domains and subdomains under a single installation. Requesting and configuring a Multi-Domain Wildcard cert is a bit different from the regular certificates. You need to generate a CSR (Certificate Signing Request) for a single domain (e.g., yoursite.com) without adding an asterisk as you would normally do when applying for a Wildcard certificate. In the fields below the primary domain, all the additional SANs (2nd, 3rd, 4th domains and so on) can be Wildcard domains.

The following explanations and examples will better illustrate how Multi-Domain Wildcard SSL works.

Let’s take the Sectigo Multi-Domain Wildcard SSL certificate for example. It comes with 3 SANs (domain) by default and works as below:

It can secure one main domain and multiple Wildcard domains.

For example:

1. yoursite.com (specified in your CSR)
2. *.yoursite.com
3. *.yoursecondsite.com

It can protect one primary domain and numerous Wildcard domains (with both first level and second-level subdomains).

For instance:

1. yoursite.com (specified in your CSR)
2. *.yoursite.com
3. *.store.yoursite.com

It can encrypt multiple domains and several Wildcard domains (with both first level and second-level subdomains.

For example:

1. yoursite.com (specified in your CSR)
2. yoursecondsite.com
3. *.yoursecondsite.com

Important! When you include a SAN item such as *.yoursite.com, you secure its unlimited subdomains, but not the domain itself. To protect all your domains and subdomains, you’ll have to configure the wildcard certificate for multiple domains cert as follows:

1. yoursite.com (specified in your CSR)
2. *.yoursite.com (for all subdomains)
3. yoursecondsite.com
4. *.yoursecondsite.com (for all subdomains)

The best thing about a wildcard certificate for multiple domains is that you can later add as many subdomains as you want to your server without reissuing your Wildcard cert each time you assign a new subdomain.

Website encryption, along with web hosting, and your content sit at the core of your online business or project. If you manage multiple sites, each with several subdomains, there isn’t a better option to encrypt them than a Multi-Domain Wildcard Certificate.