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What is a wildcard certificate

by SW Team

What is a Wildcard SSL Certificate?

In simple terms, a Wildcard SSL Certificate is a type of SSL Certificate designed to secure a primary domain and all of its subdomains. Instead of requiring an individual SSL Certificate for each subdomain, the Wildcard SSL Certificate allows encrypted communication between the user's browser and the server for multiple subdomains under a single main domain.


How does it work?

Imagine you have a main website with a domain like "". Underneath this main domain, you may have several subdomains, such as "", "" or "". Instead of purchasing and configuring a separate SSL certificate for each of these subdomains, a Wildcard SSL Certificate allows you to secure them all with a single certificate.

The secret lies in the use of the asterisk (٭), known as a wildcard, in the certificate configuration. For example, a certificate configured for "٭" will automatically protect all subdomains under "".


Benefits of a Wildcard SSL Certificate

  1. Simplicity and Convenience: The main advantage of the Wildcard SSL Certificate lies in its ability to simplify SSL certificate management. Instead of dealing with multiple certificates for each subdomain, one certificate covers all cases.

  2. Cost Savings: By reducing the need to purchase and maintain multiple SSL Certificates, a Wildcard SSL Certificate can save money in the long run, especially for websites with numerous subdomains.

  3. Scalability: As your website grows and you add more subdomains, a Wildcard SSL Certificate scales easily, providing a scalable solution for your security needs. This avoids having to generate new certificates for new subdomains.

  4. Uniform Security: Ensures uniform and consistent protection across all your subdomains, maintaining high security standards across your entire web infrastructure.

When should you consider using it?

If you own a website with multiple subdomains or plan to expand in the future, a Wildcard SSL Certificate can be a smart choice. It is especially useful for businesses with complex subdomain structures, such as e-commerce platforms, cloud services or websites with secure login areas.

In short, a Wildcard SSL Certificate is an essential piece of security strategy for any website that needs to secure multiple subdomains. Its ability to simplify management, save costs and provide consistent security makes it a powerful choice for businesses of all sizes. By investing in a Wildcard SSL Certificate, you are strengthening the security of your website and protecting the trust of your online users.