# CNAMEcatcher.com > CNAMEcatcher is a free service that redirects visits from unused subdomains to a domain owner's homepage. Create one DNS record in the domain's DNS zone: type `CNAME`, name `*`, target `use.cnamecatcher.com`. Existing DNS names take precedence. If a wildcard already exists, check what depends on it before making changes. A request for `wwww.your-domain.com` can redirect to `https://your-domain.com/?utm_source=cnamecatcher.com&utm_medium=redirect&utm_campaign=wwww.your-domain.com`. The campaign value identifies the original hostname. The wildcard applies only within the configured domain. ## Setup and support - [Setup guide](https://cnamecatcher.com/#setup): Record values and how to test a redirect. - [Live demo](https://peek-a-boo.cnamecatcher.com): Redirects from an unused subdomain back to the homepage. - [Frequently asked questions](https://cnamecatcher.com/#faq): Coverage, existing records, analytics, and removing the wildcard. - [Contact](https://cnamecatcher.com/contact/): Email support for setup questions or abuse reports. ## Policies - [Privacy policy](https://cnamecatcher.com/privacy/): Website visits, redirect parameters, and support email. - [Terms of use](https://cnamecatcher.com/terms/): Authorized domains, acceptable use, and availability.