Rebilly does not require IP addresses for allowing connections to third parties over normal HTTPS port 443. Other ports will require updating the allow list.
Third party integration partners may require our IP addresses, which are subject to change periodically.
This includes both our sandbox and live environment. These are the IP addresses these requests will originate from. Our webhooks will also be delivered from these addresses.
This is for our developers to be able to connect to third party APIs from within our development environment.