New methods have been added to API v4: you can now use the API to download information about our checkpoint servers (in particular the IP addresses).
As part of this update, we’ve added some methods that can be accessed anonymously (without needing an API login account) to download a clean list of IPv4 and IPv6 addresses of our checkpoint locations. You can use these methods to write a script that keeps your firewall updated if you want to whitelist the IP addresses of our checkpoints.