Wildcard domains

A wildcard domain matches multiple first-level subdomains.

Example:

*.example.com

Customer wildcard domains are not supported on Easel today.

Add each hostname you need as an exact domain, for example:

alice.example.com
store.example.com
preview-123.example.com

What is not covered

• Adding *.example.com in Custom Domains
• Wildcard certificates for customer hostnames
• Nameserver delegation for wildcard routing

Platform-generated hostnames under *.preview.easelusercontent.com are separate from customer wildcards and are managed by Easel.

Multi-tenant applications

If your application needs per-tenant subdomains, add each tenant hostname individually for now, or terminate those hostnames on your own reverse proxy in front of Easel until native wildcards ship.

When you handle many hostnames in application code, validate the Host header and map it to a known tenant. Do not treat every arbitrary subdomain as trusted input.

Related guides

• Add a custom domain
• HTTPS and TLS