GitHub Pages works with two types of domains: subdomains and apex domains. For a list of unsupported custom domains, see "Troubleshooting custom domains and GitHub Pages."
|Supported custom domain type||Example|
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 GitHub Pages 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, but you need to make the DNS changes to use the
www subdomain. 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 GitHub Pages site."
After you configure a custom domain for a user or organization site, the custom domain will replace the
<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 GitHub Pages site for that repository will be available at
For more information about each type of site and handling custom domains, see "Types of GitHub Pages sites."
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
Subdomains are configured with a
CNAME record through your DNS provider. For more information, see "Managing a custom domain for your GitHub Pages site."
www subdomain is the most commonly used type of subdomain. For example,
www.example.com includes a
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.
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
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
ANAME record through your DNS provider. For more information, see "Managing a custom domain for your GitHub Pages site."
If you are using an apex domain as your custom domain, we recommend also setting up a
www subdomain. If you configure the correct records for each domain type through your DNS provider, GitHub Pages will automatically create redirects between the domains. For example, if you configure
www.example.com as the custom domain for your site, and you have GitHub Pages DNS records set up for the apex and
www domains, then
example.com will redirect to
www.example.com. Note that automatic redirects only apply to the
www subdomain. Automatic redirects do not apply to any other subdomains, such as
blog. For more information, see "Managing a custom domain for your GitHub Pages site."
If your GitHub Pages site is disabled but has a custom domain set up, it is at 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.
Verifying your custom domain prevents other GitHub users from using your domain with their repositories. If your domain is not verified, and your GitHub Pages site is disabled, you should immediately update or remove your DNS records with your DNS provider. For more information, see "Verifying your custom domain for GitHub Pages" and "Managing a custom domain for your GitHub Pages site."
There are a couple of reasons your site might be automatically disabled.
- If you downgrade from GitHub Pro to GitHub Free, any GitHub Pages 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 GitHub Pages feature, and the currently published GitHub Pages site will be unpublished. For more information, see "Transferring a repository."