Multi-Domain (UCC/SAN) TLS/SSL

Multi-Domain (UCC/SAN) TLS/SSL

One certificate. Up to 500 domains. Maximum consolidation.

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1. Select validation

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

2. Select duration

3. Enter your domains

Separate domains by space, new line, or comma. Use *.domain.com for wildcards.

Valid Wildcard Invalid

Order Summary

ProductMulti-Domain UCC/SAN
ValidationOrganization Validation (OV)
Term1 year
Rate$177.00/yr
DomainsNot specified
Total$177.00
Secure checkout on SSL.com

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.

Many domains. One certificate. One renewal.

A Multi-Domain certificate (also called a UCC 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 certificate portfolio in a single certificate: up to 500 different domains, subdomains, and hostnames covered under one SAN (Subject Alternative Name) list.

Simplified cost structure

Simplified cost structure: pay for the SANs you need as add-on units. Far cheaper than buying individual certificates per domain, especially for enterprises with dozens or hundreds of hostnames.

Single renewal point

One expiry date, one renewal event, one certificate to manage across your entire domain portfolio: dramatically simplifies lifecycle management at scale.

Microsoft Exchange / OCS

The required UCC (Unified Communications Certificate) format for Microsoft Exchange hybrid deployments, autodiscover, legacy OCS (Office Communications Server), and on-premises Skype for Business environments.

ACME-compatible

Automate Multi-Domain certificate issuance and renewal via ACME (RFC 8555): HTTP-01 challenge for publicly accessible domains or DNS-01 challenge for internal hostnames and wildcards.

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 cover CA operations, Baseline Requirements SSL, Network Security, and EV SSL: continuous independent assurance required by every major browser root program.

All major trust stores

Trusted in Chrome, Firefox, Safari, Edge, and every major browser plus iOS, Android, macOS, and Windows trust stores: chains to SSL.com’s globally trusted root pre-installed everywhere.

Exchange & OCS compatible

Required UCC certificate format for Microsoft Exchange autodiscover, hybrid deployments, and legacy Office Communications Server: handles the SAN entries these products require.

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

Enterprise EV UCC/SAN: Extended Validation across multiple domains with verified organization identity and up to $1.75M warranty. The strongest multi-domain trust tier.
Learn more

Single Domain TLS/SSL

Single Domain TLS/SSL: secure exactly one specific domain with DV, OV, or EV validation. The right choice when multi-domain coverage isn’t needed.
Learn more

ACME

ACME automates Multi-Domain certificate renewals via Multi-SAN orders: production-ready at scale with no rate limits as TLS lifetimes shorten.
Learn more

CLM

Integrate SSL.com as a CA into your CLM platform — Venafi TPP or Keyfactor Command — for fleet-wide certificate discovery, inventory, and lifecycle management.
Learn more

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