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A Wildcard SSL Certificate makes securing a website and its multiple subdomains simple. Pay one flat price and encrypt all your subdomains. And we sell Comodo Wildcards for the best price you’ll find anywhere–guaranteed.
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There are some use cases when a Wildcard is not the right choice for you and your business. We’ll get to those in a second, but first the advantages.
Encrypting each domain and sub-domain individually can be cost prohibitive. Even if you use a multi-domain SSL certificate, you still have to pay by the SAN. That adds up. But a Wildcard encrypts your domain and all accompanying sub-domains for one low price. It’s really a no-brainer.
Imagine you did decide to go the other route and use single domain or a multi-domain certificate to encrypt subdomains. In addition to the cost, you’re constantly juggling expiration dates, renewals and installations for myriad certificates. Even if you use the Multi-Domain you still have to take the time to fill out every single SAN. Wildcards are easy and they make certificate management for multiple subdomains simple.
What happens if you get a Wildcard for two years and then, mid lifespan, you add a new subdomain. No problem! Just re-issue your SSL certificate and the new one will cover your new subdomain. That’s called being futureproof!
There are two main reasons why a Wildcard might not be for you.
The first is that you can’t get an EV Wildcard. So if you want your name in the green address bar for either your main domain or any of your sub-domains you’ll need to choose an EV Multi-Domain SSL certificate.
The second is if you’re encrypting multiple subdomain levels (for example: https://blog.us.example.com). Unfortunately, there isn’t really a good workaround if you have both first and second level sub-domains. You can try to employ a double wildcard (for example, *.*.website.com) but most browsers — including the industry leaders — will return an error message. If you want to encrypt subdomains at different levels, your best bet is a Multi-Domain certificate.