A Multi-Domain SSL Certificate, also known as a Subject Alternative Name (SAN) SSL, is designed to secure multiple domain names and subdomains with a single SSL certificate. Unlike Single-Domain SSL (which secures only one website) and Wildcard SSL (which covers all subdomains under a single domain), Multi-Domain SSL can protect multiple, unrelated domains and subdomains in a single purchase.
🔹 Example of Multi-Domain SSL Coverage:
- yourwebsite.com (Primary domain)
- blog.yourwebsite.com (Subdomain)
- yourcompany.net (Completely different domain)
- store.yourcompany.org (Another subdomain)
This flexibility makes Multi-Domain SSL a cost-effective solution for businesses managing multiple websites or applications.
Difference Between Single-Domain, Wildcard, and Multi-Domain SSL
| Feature | Single-Domain SSL | Wildcard SSL | Multi-Domain (SAN) SSL |
|---|---|---|---|
| Domains Covered | 1 domain only | 1 domain + unlimited subdomains | Multiple domains + subdomains |
| Best for | Small websites & blogs | Businesses with multiple subdomains | Enterprises, agencies, and hosting providers |
| Cost | Low | Medium | High (but cost-effective for multiple sites) |
| Example Usage | yourwebsite.com | yourwebsite.com, blog.yourwebsite.com, shop.yourwebsite.com | yourwebsite.com, yourcompany.net, youragency.co.uk |
💡 Choosing the Right SSL:
✔ Use Single-Domain SSL if you only need to secure one website.
✔ Use Wildcard SSL if you need to secure multiple subdomains.
✔ Use Multi-Domain SSL if you manage multiple domains and subdomains under one certificate.
Who Needs a Multi-Domain SSL Certificate?
1. Businesses Managing Multiple Websites
If your business has different brands or services hosted on separate domains, a Multi-Domain SSL helps secure them all under one certificate.
✅ Example: A company owns:
- company.com (Main website)
- company.net (Corporate site)
- company.store (E-commerce store)
With a SAN SSL, one certificate secures all three domains instead of buying separate SSLs.
2. Enterprises with Global Websites
International businesses often operate multiple domain extensions based on regions. Multi-Domain SSL ensures all global domains are secure.
✅ Example:
- brand.com (US website)
- brand.co.uk (UK website)
- brand.in (India website)
A SAN SSL certificate secures all versions under one SSL, simplifying security management.
3. Digital Agencies & Hosting Providers
Agencies managing multiple client websites or hosting providers offering secure hosting services can use a Multi-Domain SSL to cover multiple domains efficiently.
✅ Example:
- client1website.com
- client2website.com
- client3website.com
Instead of purchasing separate SSLs for each, a SAN SSL covers all under one certificate, saving time and costs.
4. SaaS & Cloud Service Providers
SaaS businesses and cloud platforms often operate multiple applications or services on different subdomains and domains. A Multi-Domain SSL ensures secure data transfer across all endpoints.
✅ Example:
- app1.yourcloud.com
- app2.yourcloud.com
- api.yourcloud.com
🔒 With Multi-Domain SSL, all these applications are protected under a single SSL.
A Multi-Domain SSL Certificate is an efficient, cost-effective, and scalable solution for securing multiple domains and subdomains under one SSL. Whether you are a business, enterprise, hosting provider, or SaaS platform, a SAN SSL helps simplify security management while maintaining strong encryption.
Benefits of Multi-Domain (SAN) SSL Certificates
A Multi-Domain SSL Certificate (also called a SAN SSL) is one of the most efficient and cost-effective ways to secure multiple domains and subdomains under a single certificate. Here’s why businesses, enterprises, and hosting providers prefer Multi-Domain SSL over buying multiple separate certificates.
1. Secure Multiple Domains & Subdomains with One SSL
A Multi-Domain SSL allows you to secure multiple domains, subdomains, and websites under a single certificate, reducing complexity and ensuring seamless security management.
✅ Example:
- Primary Domain:
yourbusiness.com - Additional Domains:
yourbusiness.net,yourbusiness.org - Subdomains:
blog.yourbusiness.com,shop.yourbusiness.com
With one certificate, all these domains remain encrypted and secure, protecting sensitive data and ensuring compliance with security standards.
2. Cost-Effective Compared to Buying Separate SSLs
Purchasing separate SSL certificates for each domain and subdomain can be expensive. A Multi-Domain SSL significantly reduces costs by consolidating security under a single certificate.
💰 Cost Savings Example:
- Single-Domain SSL: $50 per year × 5 domains = $250/year
- Multi-Domain SSL: Covers 5 domains for $100–$150/year
A SAN SSL provides enterprise-level encryption at a fraction of the cost, making it a budget-friendly option for businesses managing multiple websites.
3. Simplified SSL Management (Single Installation & Renewal)
Managing multiple SSL certificates means dealing with different renewal dates, separate installations, and ongoing maintenance. With Multi-Domain SSL, you only need to install, configure, and renew one certificate, making SSL management much easier.
🔹 Key Advantages:
✔ One renewal process for all domains
✔ Easier installation & setup on hosting servers
✔ Reduces administrative workload
For IT teams and webmasters, a SAN SSL eliminates SSL-related headaches and ensures seamless website security across multiple domains.
4. Strong Encryption (256-bit) & SHA-2 Hashing
A Multi-Domain SSL provides industry-standard 256-bit encryption and SHA-2 hashing, ensuring maximum protection against cyber threats like man-in-the-middle (MITM) attacks, phishing, and data interception.
🔒 Security Features:
- 256-bit encryption: Ensures end-to-end data protection
- SHA-2 hashing algorithm: Strengthens security against cyberattacks
- HTTPS & padlock icon: Increases trust and security for visitors
With SSL encryption, customers feel safe sharing sensitive information like credit card details, login credentials, and personal data on your website.
5. Boosts SEO and Trustworthiness
Google prioritizes secure websites with HTTPS encryption, giving them a higher ranking in search results. A Multi-Domain SSL helps improve SEO performance, especially for businesses operating multiple websites.
🚀 SEO & Trust Benefits:
✔ Higher Google rankings due to HTTPS encryption
✔ Increased customer confidence with SSL trust seals
✔ Lower bounce rates as users trust secure websites
For e-commerce stores, agencies, and enterprises, a SAN SSL helps build trust, reduce cart abandonment rates, and improve conversion rates.
A Multi-Domain (SAN) SSL Certificate is a smart, cost-effective, and scalable security solution for businesses managing multiple websites. Instead of buying separate SSLs, a SAN SSL simplifies security management, reduces costs, and ensures strong encryption across multiple domains.
Top Multi-Domain SSL Certificate Providers
A Multi-Domain SSL Certificate (also known as SAN SSL) is the best choice for businesses managing multiple websites under one certificate. These certificates simplify SSL management, reduce costs, and ensure high-level encryption across all your domains. Below are the top Multi-Domain SSL providers, offering a mix of affordability, security, and enterprise-grade solutions.
1. SSL.com Multi-Domain UCC/SAN SSL
Best for: Businesses, IT companies, and hosting providers needing flexible domain security.
✅ Key Features:
- Covers up to 100 domains & subdomains
- Domain Validation (DV) & Organization Validation (OV) options
- Wildcard support for subdomains
- Free site seal to boost trust
- High warranty protection
💰 Pricing: Starts from $49/year for 3 domains (additional domains cost extra).
🔹 Why Choose SSL.com?
It’s a budget-friendly and flexible option for small businesses and IT teams managing multiple sites.
2. Sectigo (Comodo) Multi-Domain SSL
Best for: Small businesses & startups looking for an affordable yet secure SSL solution.
✅ Key Features:
- Secure up to 250 domains with one certificate
- Available in DV, OV, and EV validation
- $500,000 warranty for added security
- Instant issuance for fast activation
- Trust logo & HTTPS padlock for credibility
💰 Pricing: Starts from $79/year for 3 domains.
🔹 Why Choose Sectigo?
One of the most affordable Multi-Domain SSL options, offering strong encryption and high trust.
3. DigiCert Multi-Domain SSL
Best for: Enterprises & large organizations needing top-tier security and premium support.
✅ Key Features:
- Covers up to 250 domains
- EV (Extended Validation) support for maximum trust
- $1.5M warranty coverage
- Priority support & faster validation
- Compatible with all major browsers & mobile devices
💰 Pricing: Starts from $299/year for 3 domains.
🔹 Why Choose DigiCert?
DigiCert is a premium SSL provider offering strong encryption, fast support, and enterprise-grade security.
4. GeoTrust True BusinessID Multi-Domain SSL
Best for: Small and medium businesses (SMBs) needing cost-effective security.
✅ Key Features:
- Secure up to 100 domains under one certificate
- OV validation for verified business security
- $1.25M warranty for enhanced trust
- Fast issuance (1-2 days)
- SHA-2 encryption for strong security
💰 Pricing: Starts from $149/year for 3 domains.
🔹 Why Choose GeoTrust?
A cost-effective Multi-Domain SSL ideal for SMBs, offering business authentication & strong encryption.
5. GlobalSign Multi-Domain SSL
Best for: Large enterprises and corporate businesses needing high-end encryption.
✅ Key Features:
- Covers 100+ domains & subdomains
- 256-bit encryption & SHA-2 hashing
- EV validation available for premium security
- GDPR & PCI compliance
- Priority validation & 24/7 support
💰 Pricing: Starts from $249/year for 3 domains.
🔹 Why Choose GlobalSign?
A trusted SSL provider for enterprises, ensuring maximum security, compliance, and scalability.
6. Entrust Multi-Domain SSL
Best for: Regulated industries (finance, healthcare, government) needing compliance-focused security.
✅ Key Features:
- Secure up to 250 domains
- Supports EV, OV, and DV validation
- $1.75M warranty coverage
- Strong encryption with regulatory compliance
- Dedicated enterprise-level support
💰 Pricing: Starts from $199/year for 3 domains.
🔹 Why Choose Entrust?
Perfect for businesses needing strong security, compliance, and regulatory approvals for handling sensitive data.
A Multi-Domain SSL is an essential security solution for businesses managing multiple websites. Whether you’re looking for an affordable SSL or an enterprise-grade security solution, there’s an option for everyone.
💡 Quick Summary of the Best Providers:
| SSL Provider | Best For | Starting Price | Domains Covered | Key Feature |
|---|---|---|---|---|
| SSL.com | Small businesses & IT teams | $49/year | 3+ domains | Budget-friendly |
| Sectigo (Comodo) | Affordable SSL for startups | $79/year | 3-250 domains | Widely trusted |
| DigiCert | Enterprise security & premium support | $299/year | 3-250 domains | EV validation |
| GeoTrust | Small & medium businesses | $149/year | 3-100 domains | OV validation |
| GlobalSign | Large enterprises | $249/year | 3-100+ domains | High-end encryption |
| Entrust | Regulatory & compliance-heavy industries | $199/year | 3-250 domains | Best for finance & healthcare |
How to Choose the Right Multi-Domain SSL Provider
Selecting the right Multi-Domain SSL Certificate (SAN SSL) is crucial for ensuring strong security, cost-effectiveness, and easy management across multiple domains. Here’s what you should consider before making a decision:
1. Pricing & Warranty
💰 Multi-Domain SSL certificates start from $80/year and can go up to $500/year, depending on the provider and features.
🔹 Budget-friendly options (e.g., Sectigo, SSL.com) start at around $80-$150/year, covering 3-5 domains with standard encryption.
🔹 Premium enterprise-grade SSLs (e.g., DigiCert, GlobalSign) range from $250-$500/year, offering high warranty coverage and advanced encryption.
🔹 Warranty coverage varies between $100,000 to $1.75 million, protecting your business from SSL-related security breaches.
💡 Tip: Choose a provider that balances cost, security, and warranty protection based on your business size.
2. Number of Domains Covered
Multi-Domain SSL certificates allow you to secure multiple domains and subdomains under one certificate.
✔ Basic Plans: Cover 3 to 5 domains (best for small businesses & startups).
✔ Enterprise Plans: Cover up to 250 domains (ideal for agencies & large organizations).
✔ Custom Plans: Some providers allow adding extra domains at an additional cost (e.g., $10-$50 per domain).
💡 Tip: Pick a provider that offers flexible domain coverage, so you can scale your SSL as your business grows.
3. Validation Type (DV, OV, or EV Multi-Domain SSL)
Multi-Domain SSLs come in three validation types, depending on security needs and industry compliance.
🔹 DV (Domain Validation) – Quick & easy setup, ideal for personal sites & small businesses.
🔹 OV (Organization Validation) – Verifies business identity, suitable for corporate websites & e-commerce stores.
🔹 EV (Extended Validation) – Highest level of security, best for banks, financial institutions, and enterprises.
💡 Tip: If you run an e-commerce or financial business, go for OV or EV SSL for higher trust and compliance.
4. Browser & Mobile Compatibility
A good Multi-Domain SSL should work seamlessly on all major browsers and mobile devices.
✔ Compatible Browsers: Google Chrome, Firefox, Safari, Edge, Opera
✔ Mobile Compatibility: Android, iOS, Windows Mobile
✔ Older Browser Support: Some providers ensure compatibility with older versions of IE and legacy browsers.
💡 Tip: Choose an SSL provider with 99%+ browser compatibility to prevent security warnings.
5. Customer Support & Refund Policies
Good customer support is crucial for SSL installation, renewal, and troubleshooting.
✔ 24/7 Support: Look for providers offering 24/7 live chat, phone, and email support.
✔ Refund Policies: Some SSL providers offer a 15 to 30-day money-back guarantee, allowing risk-free purchases.
✔ Installation Assistance: Premium providers (DigiCert, Entrust) provide managed installation services for businesses.
💡 Tip: If you’re not tech-savvy, choose a provider with strong support and easy refund options.
Final Recommendations
Here’s a quick breakdown to help you choose the right Multi-Domain SSL:
| Factor | Best Option |
|---|---|
| Best Budget SSL | Sectigo (Comodo) Multi-Domain SSL ($79/year) |
| Best for Small Businesses | SSL.com Multi-Domain SSL ($99/year) |
| Best for Enterprises | DigiCert Multi-Domain SSL ($299/year) |
| Best for Regulatory Compliance | Entrust Multi-Domain SSL ($199/year) |
| Best for Large-Scale Security | GlobalSign Multi-Domain SSL ($249/year) |
Why Multi-Domain SSL is Ideal for Businesses Managing Multiple Websites
A Multi-Domain SSL Certificate (SAN SSL) is the perfect solution for businesses, enterprises, agencies, and hosting providers managing multiple websites. Instead of buying separate SSL certificates for each domain, a Multi-Domain SSL secures multiple domains and subdomains under one certificate, making it a cost-effective and hassle-free security solution.
1. Cost-Effective & Budget-Friendly
🔹 Buying individual SSL certificates for multiple websites can be expensive. Multi-Domain SSLs allow businesses to secure up to 250 domains with just one certificate.
🔹 Lower renewal costs compared to managing multiple separate SSL certificates.
🔹 Budget-friendly DV Multi-Domain SSLs start at $79/year, while enterprise-grade EV SSLs provide top security for banks, financial institutions, and e-commerce businesses.
💡 Example: Instead of purchasing 5 different SSLs at $50 each, a Multi-Domain SSL covering all 5 domains can cost as low as $80-$100 per year, saving over 50% on security costs.
2. Simplified SSL Management & Easy Renewal
🔹 Single installation & renewal saves time and effort for businesses handling multiple domains.
🔹 Reduces the risk of SSL expiration or security warnings across different domains.
🔹 Wildcard + Multi-Domain options allow businesses to secure both domains and subdomains effortlessly.
💡 Example: A digital agency managing 10 websites can avoid the hassle of renewing SSLs for each site separately and renew just one certificate instead.
3. Strong Security & Compliance for Businesses
🔹 Provides 256-bit encryption & SHA-2 hashing, ensuring maximum security for sensitive transactions.
🔹 Helps businesses meet GDPR, PCI-DSS, and HIPAA compliance standards.
🔹 Ideal for corporations, e-commerce stores, government websites, and financial institutions that handle confidential user data.
💡 Example: A multi-brand e-commerce platform managing different domains for various regions (e.g., brandname.in, brandname.com, brandname.co.uk) can secure all domains under one SSL.
4. SEO & Trust Benefits
🔹 Google prioritizes HTTPS websites, leading to higher search rankings.
🔹 Prevents “Not Secure” browser warnings, enhancing user trust and reducing bounce rates.
🔹 Boosts customer confidence for businesses handling online payments and user credentials.
💡 Example: An enterprise with multiple business units (HR, sales, customer support) on different domains can benefit from improved SEO and security trust with a Multi-Domain SSL.
Best Budget-Friendly & Enterprise-Grade Multi-Domain SSL Options
| SSL Provider | Best For | Starting Price | Number of Domains Covered |
|---|---|---|---|
| Sectigo (Comodo) Multi-Domain SSL | Budget-friendly | $79/year | 3-250 domains |
| SSL.com Multi-Domain SSL | Small businesses & agencies | $99/year | 3-100 domains |
| DigiCert Multi-Domain SSL | Enterprises & financial institutions | $299/year | 3-250 domains |
| GeoTrust True BusinessID Multi-Domain SSL | SMEs & corporate websites | $199/year | 3-100 domains |
| GlobalSign Multi-Domain SSL | High-end encryption for large organizations | $249/year | 3-250 domains |
| Entrust Multi-Domain SSL | Best for government & compliance-heavy industries | $199/year | 3-250 domains |
