Wildcard SSL vs Multi-Domain SSL: Which Should You Choose?

Right Choice in SSL Certificate Types

If you have more than one website or subdomain, obtaining an SSL certificate for each separately can be both a costly and difficult to manage process. This is where Wildcard SSL and Multi-Domain (SAN) SSL certificates come into play.

However, understanding the differences between these two types of certificates is critical for you to make the right investment. In this article, we will examine both certificate types in detail.

What is Wildcard SSL Certificate?

Wildcard SSL certificate secures a main domain and all subdomains connected to that domain with a single certificate. For example:

• *.example.com with schema;
• www.example.com
• mail.example.com
• blog.example.com
• shop.example.com
• And an unlimited number of subdomains are protected

Wildcard SSL Advantages

• Unlimited Subdomains:You can add as many subdomains as you want
• Cost Savings:There is no need to obtain a separate certificate for each subdomain
• Easy Management: You manage all subdomains with a single certificate
• Flexibility:Automatically protected when you add a new subdomain

Wildcard SSL Disadvantages

• Supports only one level subdomain (*.example.com yes, *.sub.example.com no)
• Does not cover different main domains
• Not issued at EV (Extended Validation) level

What is a Multi-Domain (SAN) SSL Certificate?

Multi-Domain SSL certificate protects multiple different domain names under a single certificate. It uses SAN (Subject Alternative Name) technology:

• example.com
• example.net
• myshop.com
• company.org
• Usually up to 100-250 domains are supported

Multi-Domain SSL Advantages

• Different Domains: You protect completely different domain names with a single certificate
• EV Support:Available at Extended Validation
• Central Management: All domains are managed from a single certificate
• Exchange/Office 365: Fully compatible with Microsoft products

Multi-Domain SSL Disadvantages

• Additional cost is usually paid for each additional domain
• Adding a new domain may require certificate re-issuance
• Subdomains count as separate SAN entries

Comparison Table

Which Should You Choose in Which Situation?

Prefer Wildcard SSL if:

• If you use many subdomains under a single main domain
• If you frequently add new subdomains
• If your services such as blog, mail, panel are under the same domain
• If you want to keep your budget stable

Choose Multi-Domain SSL If:

• If you have more than one different domain name
• If you are using Microsoft Exchange or Office 365
• If EV level verification is required
• If you want to manage your different brands with a single certificate

Conclusion

Both types of SSL offer excellent solutions in different scenarios. The important thing is to analyze your own infrastructure and needs correctly. As DataSSL, we offer both types of certificates from well-known brands in the industry at affordable prices.