Get a DNS health check for GitHub Pages

Gets a health check of the DNS settings for the CNAME record configured for a repository's GitHub Pages.

The first request to this endpoint returns a 202 Accepted status and starts an asynchronous background task to get the results for the domain. After the background task completes, subsequent requests to this endpoint return a 200 OK status with the health check results in the response.

The authenticated user must be a repository administrator, maintainer, or have the 'manage GitHub Pages settings' permission to use this endpoint.

OAuth app tokens and personal access tokens (classic) need the repo scope to use this endpoint.