What is a catch-all (wildcard) subdomain?

If you want a browser to be able to access your site regardless of the subdomain requested, such as www.example.com or example.com, a catch-all wildcard subdomain can help. This feature directs all traffic to a single location, making it easier to manage and reducing the chance of errors due to typos.

Benefits of Catch-All Wildcard Subdomains

1. Simplified Domain Management: Manage multiple subdomains with one record.
2. Reduced Error Risk: Catch common typos or unrecognized subdomains.
3. Cost-Effective Solution: Saves on additional domain purchases and configurations.

How It Works

A catch-all wildcard subdomain uses a special DNS record, such as *, to route all subdomains to the main domain. For example:

• *.example.com routes www.example.com, example.com, and mail.example.com to your main site.

When to Use It

• For Temporary or Test Subdomains: Quickly set up additional domains without registering each one separately.
• To Catch Common Typos: Ensure users land on the correct page even if they miss a part of the domain name.
• For Single-Property Domains: Ideal for websites with a single location but multiple potential subdomains.

Limitations

• Cannot Be Used for Subdomains Requiring Specific Configurations: If your hosting provider requires specific subdomain configurations, a catch-all may not be suitable.
• May Not Work With All Hosting Providers: Compatibility varies depending on the platform you use.

Examples

1. Example 1:

   • Main Domain: example.com
   • Catch-All Record: *.example.com
   • Result: Both www.example.com and example.com point to your main site.

2. Example 2:

   • Main Domain: mail.example.com
   • Catch-All Record: *.mail.example.com
   • Result: Subdomains like user.mail.example.com route to the main domain.

Associated Articles

• How to Set Up a Catch-All Wildcard Subdomain
• Benefits of Using a Single Domain with Multiple Subdomains

For more information, visit our Knowledge Base.

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