What is a Multi-Domain SSL Certificate? Should I Buy One?

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Multi-Domain SSL is a smart choice. Understand why!

Multi-Domain SSL certificates, commonly referred as SAN SSL certificates, are a dominant breed of SSL certificates. The thing that separates Multi-Domain (SAN/UCC) certificate from the rest is their versatility.  They allow you to secure multiple domains/websites using a single SSL certificate Whether you have multiple domains listed on one IP or have a portfolio of sites, Multi-Domain (SAN) will be handy in either case.

Let’s say a company has three sub-brands under a parent brand. And all of them have different websites. These websites are:

  • brand1.com
  • brand2.com
  • brand3.com

The multi-domain certificate gives you the distinct advantage of encrypting all these websites on a single certificate. Needless to say, this will save a good chunk of money. More importantly, you won’t have to invest your precious time in validating, installing and managing a number of certificates.

On the flip side, even if you don’t have multiple websites, you might have a multi-national website or have multiple domains. Here too, Multi-Domain SSL certs prove to be highly convenient. Let’s look at some examples:

  • mywebsite.com
  • mywebsite.uk
  • mywebsite.au
  • blog.mywebsite.com
  • products.mywebsite.com

Once again, you only need one SSL Multi-Domain SSL certificate to secure all of these websites.

multi domain SSL certificate

How can I get one ssl certificate for multiple domains

Trust us: it’s pretty straightforward. The process of purchasing a Multi-Domain SSL certificate is pretty much the same as buying a standard SSL certificate. Here, you only need to define the number of additional domains you want to secure apart from the primary domain. These additional domains are regarded as ‘SANs.’ So, enter the number of SANs you’ll need and follow the same procedure.

If you didn’t mention additional domains for whatever reason, you could add or change SANs during the lifetime of a certificate by reissuing the certificate. However, we recommend entering two-three more SANs more than you think you’ll need.

Microsoft recommends Multi-Domain/SAN/UCC SSL

As SAN/UCC certificates work for internal domains as well as external domains, they work as an ideal solution for:

  • Microsoft Exchange Server 2007
  • Microsoft Exchange Server 2010
  • Microsoft Exchange Server 2013
  • Microsoft Exchange Server 2016
  • Microsoft Exchange Server 2019
  • Office Communications Server 2007
  • Office Communications Server 2010

What do you do when the most prominent Software provider in the world tells you something? You listen to it, that’s what.

Reasons to consider Multi-Domain SSL Certificate for Multiple Domains

  • Significant savings in costs
  • Easy certificate management
  • Available with DV, EV, & OV
  • Substantial warranties
  • Herculean 256-bit Encryption

Last Word

As they say, “Necessity is the mother of invention.” For the same reason, Multi-Domain SSL certificates first came into existence. Purchasing separate SSL for every domain is boring, tiresome and stupid at the same time. That’s where SAN certs come in and make the world a better place to live in.

Don’t forget to check out our excellent (yet cheap!) range of Multi-Domain SSL certificates and multi-domain wildcard SSL certificates!

Important Resources

Buy Comodo Multi Domain SSL – Save 68%

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