The Gemini app (web) has its own list
Google's help center lists 242 countries and territories where the Gemini web app is available, with mainland China marked "Workspace only"; Hong Kong, Macau and Myanmar are included. The mobile app's availability is published separately.
- Beyond region there are account-type and age requirements; Google's help center is authoritative, and they can't be checked from outside.
- This page matches our IP database's country against the list; Google uses its own location data, so individual IPs may differ.