Multi-Domain (UCC/SAN) TLS/SSL

One certificate. Up to 500 domains. Maximum consolidation.

A Multi-Domain (UCC/SAN) TLS/SSL certificate lets you secure dozens or hundreds of different domain names in a single OV certificate, with a $250,000 warranty. The standard choice for Microsoft Exchange and complex multi-property environments. Need Extended Validation? See Enterprise EV UCC/SAN.

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Many domains. One certificate. One renewal.

A Multi-Domain certificate — also called a UCC (Unified Communications Certificate) or SAN certificate — uses Subject Alternative Names (SANs) to list multiple fully qualified domain names in a single certificate. Each name listed is fully covered, regardless of whether the domains share a base domain.

Up to 500 SANs per certificate. SANs can be added or removed on reissuance within the certificate validity period. For Extended Validation across multiple domains, see Enterprise EV UCC/SAN.

Key benefits

Up to 500 domains in one cert

Consolidate your entire portfolio — different domains, subdomains, and hostnames.

Simplified cost structure

Pay for the SANs you need; far cheaper than individual certificates per domain.

Single renewal point

One expiry date, one renewal event, one certificate to manage.

Microsoft Exchange / OCS

The required certificate format for Exchange hybrid, autodiscover, and OCS environments.

ACME-compatible

Automate issuance and renewal via RFC 8555 — HTTP-01 and DNS-01 challenges.

Compare & Buy

1 Select duration

Need Extended Validation? For full EV vetting across multiple domains and a $1,750,000 warranty, see Enterprise EV UCC/SAN →

Order Summary

ProductMulti-Domain UCC/SAN
ValidationOV
Warranty$250,000
Term1 year
Rate$177.00/yr
Total$177.00
Secure checkout on SSL.com

Typical use cases

Microsoft Exchange / OCS

Required UCC format for Exchange hybrid, autodiscover, and OCS environments.

Multiple web properties or brands

yoursite.com, yoursite.co.uk, yoursite.de — all in one certificate.

API gateways & microservices

Partner portals and microservice clusters across multiple hostnames.

Enterprise EV UCC/SAN →

Full EV vetting across all SANs with a $1,750,000 warranty. $399.00/yr.

How it works

1

Select & configure

Specify your SAN list and complete checkout.

2

Validation

SSL.com validates domain control and organization identity for each SAN.

3

Certificate issued

Your multi-domain certificate is generated covering all listed SANs.

4

Install

Deploy to your servers, load balancers, or Exchange/OCS environment.

5

Add or remove SANs

SANs can be modified and the certificate reissued during its validity period.

Compatibility

Microsoft Exchange 2013/2016/2019

Required (UCC)

Microsoft OCS / Lync

Required (UCC)

Apache, Nginx, IIS, LiteSpeed

Full support

AWS, GCP, Azure

Full support

All major browsers

Chrome, Firefox, Safari, Edge — trusted

ACME clients (HTTP-01 & DNS-01)

Supported

Compliance & trust

WebTrust audited

Annual BDO audits for CA, BR SSL, and Network Security.

All major trust stores

Trusted in all major browsers and operating systems.

Exchange & OCS compatible

Required UCC format for Microsoft Exchange and OCS.

Frequently asked questions

No — SSL.com's multi-domain certificates require at minimum OV validation.
SSL.com Multi-Domain certificates support up to 500 SANs per certificate.
Yes — SANs can be added or removed and the certificate reissued within its current validity period.
UCC stands for Unified Communications Certificate — Microsoft's term for multi-SAN TLS certificates required for Exchange and OCS deployments.
See Enterprise EV UCC/SAN — full EV vetting across all SANs with a $1,750,000 warranty.

Consolidate your domains under one certificate

Get your Multi-Domain TLS/SSL certificate today
Configure & Buy

Related products

Enterprise EV UCC/SAN

EV validation across multiple domains — $1.75M warranty.

Learn more

Single Domain TLS/SSL

Secure one specific domain, including EV.

Learn more

ACME / CLM

Automate multi-domain cert renewals.

Learn more

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