Can I protect various sub-domains with a single certificate?


An SSL certificate is usually issued for a specific hostname. This means that an SSL certificate for "secure.yourdomain.com" cannot be used for another hostname, e.g. "store.yourdomain.com".

To remove this restriction, we offer the EuropeanSSL Wildcard certificate. This type of certificate allows you to protect an unlimited number of subdomains under the same main domain. For example, a wildcard certificate for "*.yourdomain.com" protects:

  • www.yourdomain.com
  • secure.yourdomain.com
  • store.yourdomain.com
  • xyz.yourdomain.com

Our wildcard certificates can also be used on an unlimited number of physical servers. Thus, there are no additional license fees when using a wildcard certificate on multiple servers.


You may also be interested in...
A short introduction to the world of SSL certificates (Secure Sockets Layer)

From personal information to financial information, SSL certificates ensure that data transmitted between a user's browser and a web server remains encrypted and secure. In our article, we give you an overview of the technology, show you how SSL works and what types of certificates there are.

Shorter SSL Lifespan – What You Need to Know

Discover why SSL/TLS certificates are now expiring faster than ever—transforming from years to just 47 days! Learn how this shift boosts security, mandates automation, and what it means for web users and developers alike.

Future-Proofing Your Website with Post-Quantum SSL

Discover how post-quantum SSL can shield your website from future cyber threats and keep your data safe against quantum computing attacks. Learn to implement and benefit from this advanced security measure today!

LEI Numbers: The Key to Transparency and Security in the Financial Sector and Their Connection to the IT Security Field

LEI numbers are critical for trading and security in the financial sector. Learn how they are used, how to apply for them, and the consequences of not having a number. Read more about the future development of LEI numbers and how they can improve IT security. Register with EuropeanLEI to get your own LEI number.

The importance of SSL certificates for small and medium-sized enterprises

Discover the importance of SSL certificates for small and medium-sized enterprises (SMBs) in protecting against cyberattacks and building customer trust. Learn how SSL certificates work and their impact on search engine rankings and reputational damage.