Supported custom domains
Páginas de GitHub works with two types of domains: subdomains and apex domains. For a list of unsupported custom domains, see "Troubleshooting custom domains and Páginas de GitHub."
| Supported custom domain type | Example |
|---|---|
www subdomain | www.example.com |
| Custom subdomain | blog.example.com |
| Apex domain | example.com |
You can set up either or both of apex and www subdomain configurations for your site. For more information on apex domains, see "Using an apex domain for your Páginas de GitHub site."
We recommend always using a www subdomain, even if you also use an apex domain. When you create a new site with an apex domain, we automatically attempt to secure the www subdomain for use when serving your site's content. If you configure a www subdomain, we automatically attempt to secure the associated apex domain. For more information, see "Managing a custom domain for your Páginas de GitHub site."
After you configure a custom domain for a user or organization site, the custom domain will replace the <user>.github.io or <organization>.github.io portion of the URL for any project sites owned by the account that do not have a custom domain configured. For example, if the custom domain for your user site is www.octocat.com, and you have a project site with no custom domain configured that is published from a repository called octo-project, the Páginas de GitHub site for that repository will be available at www.octocat.com/octo-project.
Using a subdomain for your Páginas de GitHub site
A subdomain is the part of a URL before the root domain. You can configure your subdomain as www or as a distinct section of your site, like blog.example.com.
Subdomains are configured with a CNAME record through your DNS provider. For more information, see "Managing a custom domain for your Páginas de GitHub site."
www subdomains
A www subdomain is the most commonly used type of subdomain. For example, www.example.com includes a www subdomain.
www subdomains are the most stable type of custom domain because www subdomains are not affected by changes to the IP addresses of GitHub's servers.
Custom subdomains
A custom subdomain is a type of subdomain that doesn't use the standard www variant. Custom subdomains are mostly used when you want two distinct sections of your site. For example, you can create a site called blog.example.com and customize that section independently from www.example.com.
Using an apex domain for your Páginas de GitHub site
An apex domain is a custom domain that does not contain a subdomain, such as example.com. Apex domains are also known as base, bare, naked, root apex, or zone apex domains.
An apex domain is configured with an A, ALIAS, or ANAME record through your DNS provider. For more information, see "Managing a custom domain for your Páginas de GitHub site."
Si estás utilizando un dominio apex como tu dominio personalizado, te recomendamos configurar un subdominio www. Si configuras los registros correctos para cada dominio, teclea a tu proveedor de DNS, Páginas de GitHub creará automáticamente redireccionamientos entre los dominios. Por ejemplo, si configuras www.example.com como el dominio personalizado para tu sitio, y tienes registros de ALIAS y CNAME configurados para los dominios de apex y de www, entonces example.com redireccionará a www.example.com. Para obtener más información, consulta "Administrar un dominio personalizado para tu sitio de Páginas de GitHub". For more information, see "Managing a custom domain for your Páginas de GitHub site."
Updating custom domains when your Páginas de GitHub site is disabled
If your Páginas de GitHub site is disabled but has a custom domain set up, you should immediately update or remove your DNS records with your DNS provider to avoid the risk of a domain takeover. Having a custom domain configured with your DNS provider while your site is disabled could result in someone else hosting a site on one of your subdomains. For more information, see "Managing a custom domain for your Páginas de GitHub site."
There are a couple of reasons your site might be automatically disabled.
- If you downgrade from GitHub Pro to GitHub Free, any Páginas de GitHub sites that are currently published from private repositories in your account will be unpublished. For more information, see "Downgrading your GitHub billing plan."
- If you transfer a private repository to a personal account that is using GitHub Free, the repository will lose access to the Páginas de GitHub feature, and the currently published Páginas de GitHub site will be unpublished. For more information, see "Transferring a repository."