RINGCENTRAL INC COM USD0.0001 CL'A' revenue for the last year amounted to 2.20 B USD, the most of which — 2.10 B USD — came from its highest performing source at the moment, Subscriptions, the year earlier bringing 1.89 B USD. The greatest contribution to the revenue figure was made by North America — last year it brought RINGCENTRAL INC COM USD0.0001 CL'A' 1.98 B USD, and the year before that — 1.79 B USD.