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What is Multi Domain Wildcard SSL Certificate?

what is multi domain wildcard ssl certificate

What is Multi Domain Wildcard SSL and How Does It Work?

Multi domain wildcard SSL certificate and its features in detail with examples. This single certificate secures multiple domains along with an unlimited number of sub-domains. Know more…

Comodo Multi Domain Wildcard SSL

There is an increased state of risk from cyber attacks that require businesses to be on their guard. It has led to growth in the cyber security business. The cybersecurity market is expected to grow to US$ 363.05 billion by 2025 from US$ 161.07 billion in 2019, translating to a 14.5% CAGR.

Companies are strengthening their security procedures, and this includes buying an SSL certificate.

The number of businesses that are securing their websites and sensitive information is increasing. But there is still scope for faster growth with the products from the renowned Certification Authorities (CA) like Comodo, GeoTrust, Sectigo, Thawte, Digicert, etc.

Now, the question arises on how to select one for your business. You must take care that the certificate you procure depends on the number of domains and sub-domains you wish to cover within the certificate.

Multi Domain Wildcard SSL Certificate

Wildcard SAN SSL Certificate can secure multiple domains and sub-domains of a business. It uses the highest levels of authentication and authorization to ensure foolproof security for businesses. The certificate provides the benefits of a SAN as well as a Wildcard SSL certificate. The certificate allows you to cover all your websites and is ideal for an e-commerce site and businesses with multiple websites for their different business lines. It is also useful for extranets, intranets, and mail servers.

If you have multiple domains and sub-domains like the example below, you may choose this certificate and secure their subdomains.

wildcard san ssl certificate

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Multi Domain Wildcard SSL Certificate Features

Encryption levels

The certificate enables the HTTPS protocol and provides the secure site padlock icon. Apart from following the CA/B forum security standards, they also include 256-bit secure encryption with a 2048-bit RSA signature key.

Businesses need not worry about the risk of their communication being read by any unauthorized third-party.

The Site Seal

Most Certificate Authorities allow the businesses to include a seal on their website, stating that the site is protected adequately by a Multi-Domain Wildcard SSL Certificate.

These site seals are static or dynamic, allowing the businesses to insert it anywhere on their website.

The site seal assures visitors that the communication with the website is secure and free from unauthorized access by others.

Supports SAN option

The certificate supports a SAN option, which means that it can use Subject Alternative Names (SANs) to secure multiple hostnames.

You can include the names of multiple domain names in the SAN field of the certificate.

Other major features:

  • Supports all major mobile devices and client browsers.
  • Simplifies the certificate management process for small and large-scale industries.
  • Supports domain validation and organization validation too.
  • Can be used on multiple physical servers.
  • Offers unlimited re-issuance capabilities.

SAN Wildcard SSL Certificate Benefits

Better management

The Multi-Domain Wildcard SSL Certificate allows you to manage the certificate better as it will enable the webmaster to have a single relationship with the selected CA.

There is no need to set up multiple alerts for upcoming renewals with multiple vendors. Moreover, they need to get involved in post-sales support with only one CA.

Saves cost

A Multi-Domain Wildcard SSL Certificate also helps to cut down on the cost of procuring multiple SSL certificates for each of the domains and underlying sub-domains that the business must secure.

The webmaster can secure multiple such domains and sub-domains altogether and entrust with a single CA. It saves the effort to research about multiple certificates and procure .

Time of issuance

The time of issuance of the certificate depends on the types of SSL certificate that is requested. They can usually be issued within a few minutes.

However, if you choose an organization validation certificate, it can take you up to three days. The business also needs to submit various legal documentation in their support.

Multiple browser compatibility

The selected SSL certificate needs to be compatible with the browser that the visitor is using. Else there could be an error.

Our Multi Domain Wildcard SSL Certificate is compatible with multiple browsers.

Warranty level

Most CAs also provide a pre-defined amount as the warranty if the CA by mistake issues wrong certificates.

This is another proof of the robust security standards deployed by the CAs. The warranty amount is different across several CAs.

You need to do some research to find out the warranty amount for the CAs.


As the risk of data breaches continues to increase, webmasters must start processes to keep the websites free from cyber attacks. Buy Wildcard SAN SSL Certificate to secure all domains and underlying sub-domains.

It will improve website security of your all domains and subdomains within  budget.

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