How do I activate a Multi-Domain SSL certificate? Print

How do I activate a Multi-Domain (SAN) SSL certificate?

A Multi-Domain SSL (also known as a SAN or UCC certificate) is a powerful tool that allows you to secure multiple different domain names under a single certificate.

Because this certificate covers more than just one "Common Name," the activation process has one extra step: defining your Subject Alternative Names (SANs).

Step 1: Generate Your CSR

Even though you are securing multiple domains, you only need one CSR.

• The Common Name: When generating your CSR on your server, use your primary domain (e.g., nixzoehost.com) as the "Common Name."

• Follow our guide: [How to Generate a CSR] if you haven't done this yet.

Step 2: Start Activation

1. Log in to your Nixzoehost Client Area.

2. Go to SSL Certificates and click Activate next to your Multi-Domain SSL.

3. Paste your CSR code into the box.

Step 3: Add Your Additional Domains (SANs)

Once you paste the CSR, a new section will appear allowing you to list the other domains you want to secure.

• Enter the additional domains one by one (e.g., myotherbrand.net, shop.nixzoehost.com, example.org).

• Important: Ensure you have purchased enough "SAN slots." Most Multi-Domain SSLs come with 3 domains included, and you can purchase more if needed.

Step 4: Select Validation Methods

For a Multi-Domain SSL, you must prove ownership for every single domain listed on the certificate.

• You can choose a different validation method for each domain (e.g., Email for domain A, DNS for domain B).

• The certificate will not be issued until every domain on the list has been successfully validated.

Step 5: Review and Submit

Complete the administrative contact information and submit the request to the Certificate Authority.

Multi-Domain SSL FAQs

• Can I add domains later? Yes. If you need to add a new domain to your Multi-Domain SSL later, you can Reissue the certificate, add the new domain to the list, and repeat the validation process.

• Can I mix different TLDs? Yes! You can secure .com, .net, .org, and even different subdomains all on the same Multi-Domain certificate.

• Does it secure the WWW and non-WWW versions? Usually, you must list both domain.com and www.domain.com as separate SANs unless your specific certificate type automatically includes both.

Pro-Tip: Keep Track of Validation

Because you are managing multiple domains, it is easy for one to get "stuck." If your certificate status remains "Pending" for a long time, check the SSL Management page to see which specific domain has not yet completed its DCV (Domain Control Validation).