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Help Center/ Cloud Certificate Manager/ FAQs/ SSL Certificate Application and Purchase/ About Required Domain Name Details/ What Is the Relationship Between a Domain Name and an SSL Certificate?

What Is the Relationship Between a Domain Name and an SSL Certificate?

Updated on 2022-09-23 GMT+08:00

An SSL certificate is used to protect a website. To make an SSL certificate work, bind it to the domain name of the website you want to protect. To that end, you need to confirm the certificate type, certificate authority, domain name type, and domain name when you make a purchase.

How Many Domain Names Can Be Protected with an SSL Certificate?

When you purchase a certificate, you will select domain type according to your business needs. The number of domain names that can be protected with a certificate varies depending on domain name type. For more details, see Table 1.

Table 1 Number of domain names that can be protected with a certificate

Certificate Types

Supported Domain Name Type

Number of Domain Names that Can Be Protected

OV and OV Pro

Single domain

One

Multiple domains

The number of domain names ranges from 2 to 250. A maximum of 250 domain names can be protected with a certificate.

Wildcard domain

One

For details about the domain names supported by wildcard-domain certificates, see What Domains Can Wildcard-Domain Certificates Support?

EV and EV Pro

Single domain

One

Multiple domains

The number of domain names ranges from 2 to 250. A maximum of 250 domain names can be protected with a certificate.

DV (Basic) - GeoTrust entry-level SSL certificates

Single domain

One

Wildcard domain

One

For details about the domain names supported by wildcard-domain certificates, see What Domains Can Wildcard-Domain Certificates Support?

DV (Basic) - DigiCert free SSL certificate

Single domain

One

How Many SSL Certificates Can Be Used for a Domain Name?

There is no restriction. You can purchase multiple certificates for the same domain name. The certificates will take effect when you use them to applications or install them on servers.

A certificate is a one-off product. If the current certificate cannot meet your requirements or is about to expire, you can purchase a new certificate that matches the domain name type and use the new certificate to the target domain name.

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