The best multi-domain SSL certificates in 2025 include Comodo PositiveSSL Multi-Domain, Sectigo PositiveSSL Multi-Domain, GeoTrust True BusinessID Multi-Domain, DigiCert Multi-Domain, and Sectigo UCC SSL. They offer up to 256-bit encryption, validate multiple domains, and are ideal for businesses needing strong, reliable security (Sectigo, DigiCert, Comodo).
Multi-Domain SSL Certificates (also called SAN Certificates or UCC SSL) let businesses secure multiple websites and subdomains under a single certificate. This reduces costs, simplifies management, and strengthens overall website security. If you’re looking for a cheap multi-domain SSL certificate, there are budget-friendly DV options available that still provide solid encryption for startups and SMBs.
Multi-Domain SSL Certificates vs Wildcard SSL
One common question businesses face is multi-domain SSL vs wildcard SSL.
- Multi-Domain SSL can cover entirely different domains like example.com, shop.net, or blog.org.
- Wildcard SSL covers unlimited subdomains of a single domain (e.g., *.example.com).
- A SAN SSL vs Wildcard SSL decision usually depends on whether your priority is securing different domain names or many subdomains of one site.
Top Multi-Domain SSL Certificates of 2025: Features & Pricing
| Product Features | Comodo PositiveSSL Multi-Domain | Sectigo PositiveSSL Multi-Domain | Multi-Domain UCC/SAN SSL | GeoTrust True BusinessID Multi-Domain |
|---|---|---|---|---|
| Certificate Authority |  Comodo  |
 Sectigo |
 SSL.com |
 GeoTrust |
| Multiple Domain Names | Multiple Domain Names | Multiple Domain Names | Multiple Domain Names | |
| $18.81/yrView Pricing | $25.60/yrView Pricing | $141.60/yearView Pricing | $317.31/yr.View Pricing | |
| Single Domain Name + 3 Different SAN Included | Single Domain Name + 2 Different SAN Included | Single Domain Name + 3 Different SAN Included | Single Domain Name + 4 Additional SAN included | |
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| Minutes | Minutes | 5 Minutes | Instant | |
| up to 256-bit | up to 256-bit | up to 256-bit | up to 256-bit | |
| 2048 bits | 2048 bits | 2048 bits | 2048 bits | |
| Medium | Medium | High | High | |
| Unlimited | Unlimited | Unlimited | Unlimited | |
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| $50,000 | $50,000 | $1,250,000 | $1,250,000 | |
| 30 days | 30 days | 30-Day | 30 days | |
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| 99% | 99% | 99% | 99% | |
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| 24/7 Live Chat | 24/7 Live Chat | 24/7 Live Chat | 24/7 Live Chat | |
A comparison of multi-domain SSL prices between Comodo, Sectigo, DigiCert, GeoTrust and SSL.com helps customers select the best combination of cost and coverage and warranty.
Why Choose Multi-Domain SSL Certificates?
- One certificate protects multiple websites while simplifying management processes
- Buying individual certificates becomes more expensive than purchasing one multi-domain certificate
- The encryption strength of 256-bit provides complete data security for all domains
- The validation process includes Domain Validated for quick issuance and Organization Validated for higher trust levels
- The certificate supports HTTPS and HTTP/2 protocols which enhance both SEO and performance outcomes
- The product allows unlimited server licensing for different deployment scenarios.
SEO Bonus: Google uses HTTPS as a ranking factor. The use of multi-domain SSL certificates prevents “Not Secure” warnings which negatively affect both conversions and search engine rankings.
Detailed Features of Leading Multi-Domain SSL Certificates
- Comodo PositiveSSL Multi-Domain
- Sectigo PositiveSSL Multi-Domain
- GeoTrust True BusinessID Multi-Domain
- DigiCert Multi-Domain SSL
- Sectigo UCC SSL Certificate
- SSL.com Multi-Domain UCC/SAN SSL Certificate
Comodo PositiveSSL Multi-Domain Certificate (2 SAN Included)
- The certificate supports encryption for up to 1000 different domains.
- The certificate process takes only minutes to complete after domain validation.
- The certificate provides excellent protection for new businesses and websites that serve informational purposes.
- The certificate provides essential encryption at a budget-friendly price.
Expert Verdict: Best budget option for small businesses that only need basic encryption and quick deployment.
Sectigo PositiveSSL Multi-Domain Certificate (2 SAN Included)
- The certificate supports up to 1000 domains and unlimited subdomains.
- Domain validation with fast issuance
- $50,000 warranty and dynamic site seal
- Ideal for businesses managing many websites without sensitive info
Expert Verdict: Perfect for hosting companies and businesses managing bulk domains at scale.
GeoTrust True BusinessID Multi-Domain SSL Certificate (4 SAN Included)
- The organization validation process results in higher trust levels.
- The encryption system uses 256-bit encryption with a 2048-bit key.
- The brand is trusted and provides a $1M warranty.
- The best option for small and medium businesses that handle organizational data.
Expert Verdict: Great for SMBs handling sensitive organizational or customer data.
DigiCert Multi-Domain SSL Certificate (3 SAN Included)
- Premium certificate with ECC and RSA cryptography
- Up to 249 domains covered
- $1.75M warranty with unlimited server licenses
- Suitable for enterprises requiring robust security
Expert Verdict: Premium choice for enterprises, SaaS, and regulated industries (finance, healthcare).
Sectigo UCC SSL Certificate (2 SAN Included)
- The certificate serves both Microsoft Exchange and communication servers and websites.
- The organization validation process includes business vetting.
- The certificate provides 256-bit encryption and a $1M warranty.
- The certificate protects up to 250 domains.
SSL.com Multi-Domain UCC/SAN SSL Certificate
- The certificate protects up to 500 different domains.
- The certificate supports both DV and OV validation types.
- The certificate serves Microsoft Exchange services and business and ecommerce setups.
- The certificate combines multiple Basic and Wildcard SSLs into a single “super certificate” through SANs.
- The free site seal helps customers trust your website and increases conversion rates.
- The product receives high marks for its flexibility and enterprise-level functionality.
Image source: ssl.com
For IT admins seeking efficiency, the best UCC SSL for Exchange servers is typically the Sectigo UCC SSL, since it’s specifically optimized for mail and communication environments.
Multi-Domain SSL Certificates Statistics & Insights 2025
- The majority of certificates provide 256-bit AES encryption together with a minimum warranty of $50,000.
- The cost of organization validated certificates begins at $140 per year but domain validated certificates start at $25 per year.
- DigiCert provides the most comprehensive warranty protection through its $1.75 million warranty coverage.
- Sectigo PositiveSSL provides the most domain support by allowing users to secure up to 2000 domains under a single certificate.
Technical SEO Benefits of SSL Certificates for 2025
- SSL certificates solve essential technical SEO problems when implemented.
- SSL certificates enable HTTPS which Google confirms as a ranking signal to enhance search positions and trust levels.
- The encryption feature of SSL certificates protects users by preventing data theft which leads to increased user confidence.
- According to Wildnet Technologies SSL certificates prevent browser warnings about “Not Secure” which results in higher bounce rates.
- SSL certificates enable HTTP/2 which results in faster page loading times that enhance user experience and search engine signal quality.
- The implementation of HTTPS canonicalization through SSL certificates solves duplicate content problems.
Final Thoughts
The combination of fast issuance and cost-efficiency makes Comodo PositiveSSL and Sectigo PositiveSSL the best options.
GeoTrust True BusinessID and DigiCert Multi-Domain stand out as the best options for maximum trust and organizational validation.
The best multi-domain SSL protection for 2025 can be selected by considering the number of domains and validation requirements and financial resources.
Frequently Asked Questions (FAQs) about Multi-Domain SSL Certificates
What is a Multi-Domain SSL Certificate?
The Multi-Domain SSL certificate protects numerous different domain names through a single certificate. The SSL certificate uses Subject Alternative Names (SANs) to secure domains such as example.com, example.net and example.org under one SSL certificate which streamlines management operations and decreases costs.
How does a Multi-Domain SSL Certificate work?
The certificate contains both a main domain name and additional SAN entries. The verification of SSL by browsers occurs when visitors visit any listed domain which results in secure padlocks and HTTPS functionality across all domains protected by the certificate.
What is the typical number of domains that one Multi-Domain SSL Certificate can protect?
The standard number of domains which these SSL certificates support reaches 250 but Sectigo offers a maximum of 2000 domains under one certificate.
Can I add or remove domains after issuing a Multi-Domain SSL Certificate?
Yes. After issuance you can modify domains by obtaining a new certificate through revalidation of domains before the certificate issuance process.
What are the differences between a Multi-Domain SSL and a UCC SSL Certificate?
The Multi-Domain SSL certificate protects various domains and subdomains which operate on different servers. The UCC (Unified Communications Certificates) function as a specific type of multi-domain SSL which serves Microsoft Exchange and Office Communications Servers.
How often should I renew my Multi-Domain SSL Certificate?
The typical renewal period for Multi-Domain SSL certificates ranges between 1 to 3 years. The best practice for certificate renewal involves doing so several weeks before expiration to prevent service interruptions. The renewal process demands a new CSR along with another validation step.
What are the technical SEO benefits of using an SSL certificate?
SSL enables HTTPS which Google has confirmed as a ranking signal. The implementation of SSL provides multiple benefits including security enhancements and user trust growth and browser warning elimination and HTTP/2 support for faster page loading and HTTPS canonicalization for resolving duplicate content.
Priya Mervana
Verified Web Security Experts
Priya Mervana is working at SSLInsights.com as a web security expert with over 10 years of experience writing about encryption, SSL certificates, and online privacy. She aims to make complex security topics easily understandable for everyday internet users.
