No, CloudFlare does not support enabling proxying (orange cloud) for wildcard (*) sub-domains. However, wildcard sub-domains can still be managed through DNS-only mode, allowing you to use CloudFlare for basic DNS functionality without its advanced security and performance features.
Why Can’t CloudFlare Proxy Wildcard Sub-Domains?
CloudFlare’s infrastructure does not support wildcard (*) sub-domains because it requires precise domain or sub-domain names to apply its caching, DDoS protection, and SSL/TLS encryption features. Proxying wildcard sub-domains would make it difficult to enforce these features effectively and securely.
What Happens If You Add a Wildcard Sub-Domain?
When you add a wildcard sub-domain (e.g., *.yourdomain.com) to CloudFlare:
- The wildcard will be visible in the DNS settings with a DNS Only (gray cloud) option.
- CloudFlare will not proxy traffic for the wildcard sub-domain, meaning no caching, security, or performance enhancements will be applied.
Alternative Options for Wildcard Sub-Domains
If you need CloudFlare features for specific sub-domains, you must manually add them to your CloudFlare account. For example:
- Add each required sub-domain explicitly, such as
blog.yourdomain.com,shop.yourdomain.com, etc. - Enable proxying (orange cloud) for these sub-domains individually to benefit from CloudFlare’s services.
How to Add Wildcard Sub-Domains in DNS Only Mode
While proxying is not supported, you can still use wildcard sub-domains in DNS-only mode for basic DNS functionality. Here’s how:
- Log in to CloudFlare: Access your account via the CloudFlare Dashboard.
- Navigate to DNS Settings: Select your domain and open the DNS tab.
- Add a Wildcard Sub-Domain: Create a new DNS record with the following settings:
- Type: A (or CNAME, depending on your setup)
- Name: *
- Value: Your server’s IP address
- Proxy Status: Set to DNS Only (gray cloud)
Key Considerations
- SSL Support: Wildcard SSL certificates installed on your server can secure wildcard sub-domains, but CloudFlare’s proxying features won’t apply.
- Performance: Without proxying, you won’t benefit from CloudFlare’s CDN and caching services for wildcard sub-domains.
- Specific Sub-Domains: Add individual sub-domains explicitly to take full advantage of CloudFlare’s features.
Need Assistance?
If you need help configuring wildcard sub-domains or understanding CloudFlare’s limitations, contact our support team through the CustomerPanel. We’ll assist you in setting up your sub-domains for optimal performance and security.
