Wildcard SSL vs Multi-Domain SSL vs Standard SSL — What’s the Difference?

SSL certificates secure your website and ensure visitors see the trusted HTTPS padlock. There are three common SSL types: Standard (Single-Domain), Wildcard, and Multi-Domain (SAN SSL). Each type is designed for a different scenario depending on the number of domains or subdomains you need to protect.

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1. Standard SSL Certificate (Single Domain)

A Standard SSL secures one domain only. This is the simplest and most cost-effective SSL option.

• Protects: example.com OR www.example.com
• Does NOT secure any subdomains
• Cheapest option
• Ideal for blogs, small business sites, or single landing pages

✔ Best for: One website with no subdomains

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2. Wildcard SSL Certificate (*.example.com)

A Wildcard SSL secures the main domain plus unlimited first-level subdomains.

• Protects: example.com and *.example.com
• Covers unlimited subdomains such as:
  • shop.example.com
  • mail.example.com
  • support.example.com
• Does NOT cover multi-level subdomains like a.b.example.com
• Best value if you use many subdomains

✔ Best for: Websites with multiple subdomains

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3. Multi-Domain SSL (SAN / UCC)

A Multi-Domain (SAN) SSL certificate protects multiple different domains and subdomains under one certificate.

• Protects multiple domains such as:
• example.com
• example.co.uk
• another-site.net
• mail.example.org
• Supports 3–250+ SAN entries
• Ideal for businesses managing many websites
• Easier and cheaper than purchasing multiple certificates

✔ Best for: Businesses running multiple domains or brands

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Comparison Table

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Which SSL Should You Choose?

Choose Standard SSL if you have one website.

Choose Wildcard SSL if you run multiple subdomains.

Choose Multi-Domain SSL if you manage multiple domains or brands.