Extension:AnonPrivacy

The AnonPrivacy extension hides the IPs of anonymous users to everyone but admins, in the recent changes, related changes, watchlists, page histories, etc. but not in the API.

Configuration
IPs can still be seen through the API via for example. Syndication feeds can be disabled by adding the following to the bottom of your LocalSettings.php:

However, IPs will still visible through other API methods. Solving this is a priority for future versions.