Onoff

Onoff is a cloud telecom company operated by Onoff Telecom SAS, offering mobile-number-based communication services for individuals and businesses.

It is a licensed telecommunications operator in 21 countries and provides numbers from 24 countries, utilizing patented cloud-based technology to merge mobile app convenience with traditional telecom reliability. The company has two main products: the Onoff app, which allows users to obtain a second phone number on the same device, and Onoff Business, a cloud-based telephony solution designed for companies and associations. Onoff focuses on reinventing business telephony and enabling multiple phone numbers on one device, while also providing communication infrastructure features like number assignment and cloud-based messaging. With around 100-120 employees, Onoff operates offices in Paris, France, and Tallinn, Estonia.