Customers typically require to configure back end IP environments (firewalls) in order open https communication with SCG.
There are 2 elements to consider as described below, please consider Inbound/Outbound to be from an Enterprise network perspective.
Outbound IP Traffic: Sending request from Enterprise application to Syniverse
Base URL: https://api.syniverse.com/scg-external/v1
Inbound IP Traffic: Receiving Events from Event Manager Subscriptions
Webhook / Mobile Source IP Addresses