Proxy-url-file-3a-2f-2f-2f

This PAC file directs URLs ending with .example.com or localhost to connect directly, while all other URLs are routed through a proxy server at proxy.example.com:8080 .

Here's a simple example of a PAC file:

Here's a guide on what that might refer to: proxy-url-file-3A-2F-2F-2F