How to Block Outgoing HTTP Calls | Single URL

Good Day!

We know that WordPress provides filters for blocking all external HTTP calls (with exceptions, if necessary) as noted below.

define('WP_HTTP_BLOCK_EXTERNAL', true);
define( 'WP_ACCESSIBLE_HOSTS', 'api.wordpress.org,*.github.com' );

However, it can be time consuming to determine which hosts (URLs) we need to add to the WP_ACESSSIBLE_HOSTS list.

Is their any way we can manipulate the above to block a single host (URL) rather than listing all the exceptions? This would be an easier, faster approach.

For example, by using the filter (fictitious, in this case):

define( 'WP_INACCESSIBLE_HOSTS', '*.github.com' );

Hoping you guys understand our request.

Any help would be appreciated. If you’re a WP developer, how can we add this request to the WP 5.7 wish list?

Thank you!