What is Multi Domain SSL (SAN) Certificate?
Multi domain (SAN) is a built-in feature that comes with an SSL certificate which lets users secure multiple domains under a single certificate. Depending on the certificate authority, a user can secure up to 250 domains under a single multi-domain SSL certificate. Securing multiple domains using SAN certificate saves money and SSL management time. Certificate authorities (CAs) such as DigiCert, Thawte etc. allow users to add up to 25 domains.
Multi-Domain/SAN SSL Certificate Structure
In case of DV, the verification process will be completed by verifying domain-registrar’s information or via email/file based verification. Whereas in a case of OV and EV, the verification process involves validating business and personal documents. Here it is worth noting that document requirement policy may differ from one CA to the other.
Mostly all the certificate authorities(CAs) offers unlimited number of server licenses with each SSL certificate. It means that a user can secure his/her domain(s) on unlimited number of servers. A few certificate authorities have come up with single server licenses. In this case, the user needs to purchase an additional license for every additional server.
See Also: What is Wildcard SSL Certificate?
Domains a SAN SSL certificate can secure
Multi Domain SSL Certificate Specifications
Certificate Authority and Multi-Domain Policy
- DigiCert Multi-Domain (SAN) Certificate with 25 SAN Domains
- Comodo Multi Domain with 250 SAN Domains
- GeoTrust True BusinessID Multi Domain with 2500 SAN domains
- Thawte Web Server SSL with 250 SAN domains
- GlobalSign Multi Domains SSL with 100 SAN Domains
- Entrust Multi-Domain SSL Certificates with 250 SAN Domains
- GoDaddy Multi-domain SSL with 5 SAN Domains
Multi Domain SSL Key Features:
- Can secure up to 250 domain names with single SSL certificate
- 2048-bit future proof SSL Certificates
- A single certificate secures both www.domain.com and domain.com
- SHA-256 signed certificates
- 99% web and mobile browser compatibility
- Supports all server types
What’s the Difference? – Single Domain SSL vs Multi-Domain SSL Certificate
|Information||Single Domain SSL Certificate||Multi-Domain SSL Certificate|
|SHA-2 Algorithm Support||Yes||Yes|
|Secure Multiple Websites||No||Yes|
|Support Additional SAN||No||Yes|
|99% Browser Compatibility||Yes||Yes|
|Secure Site Seal||Yes||Yes|
|Certificate Required||Single Certificate for Single Website||Single Certificate for Multiple Websites|
Comparison of Leading Multi-Domain SSL Certificates
|Main Features||Comodo Positive Multi Domain SSL||GeoTrust QuickSSL Premium SAN||Sectigo Multi Domain SSL||DigiCert Multi-Domain SSL|
|1 + 2 SAN||1 + 4 SAN||1 + 2 SAN||1 + 3 SAN|
|Personal Websites/Blogs||Personal Websites/Blogs||Personal Websites/Blogs||Small/Medium Businesses|
|Within Minutes||Within Minutes||Within Minutes||Minutes|
|up to 256-bit||up to 256-bit||up to 256-bit||up to 256-bit|
|2048 bits||2048 bits||2048 bits||2048 bits|
|Domain name displayed on certificate details||Domain name displayed on certificate details||Domain name displayed on certificate details||Business name displayed on certificate details|
|30 days||30 days||30 days||30 days|