About us
We connect people.
Callr is the voice API your business runs on — built by telecom operators, not resold from someone else’s network. Founded in 2011, we’re based in Paris and New York, with reach across 220+ countries.
220+
Countries covered
2.5M+
Calls daily
300+
Companies
Our story
A registered carrier since day one
We started Callr in 2011 to make voice and SMS as easy to build with as any other web API — without giving up the reliability a phone network demands. As a registered carrier with direct fiber interconnection worldwide, we control the full stack: local numbers, call quality, and 24/7 support that a reseller simply can’t offer.
Leadership
Founder-led, hands-on
Two co-founders, one platform — still built and run by the people who started it.
Taoufik Zagdoud
Co-Founder & CEO
30+ years in telecommunications. Before Callr, Taoufik held senior roles at SFR, Afone and IC Telecom, and led Centrex marketing at Groupe Convergence.
Florent Chauveau
Co-Founder & CTO
Co-founded Callr in 2011 and has stayed close to the product ever since — the person the team still turns to when something needs to just work. Believes great infrastructure is the kind nobody notices.
Where we are
Based in Paris and New York, with a global reach
Two offices, one network spanning 220+ countries.
Paris
128 rue La Boétie, 75008 Paris, FranceNew York
244 Fifth Avenue, Suite V256, New York, NY 10001-7604, USAOur network
We own our network
A carrier that doesn’t control its own infrastructure can’t guarantee the call.
Global coverage
Order numbers in one click across 220+ countries, including local, premium, vanity and toll-free numbers.
Encrypted & secure
State-of-the-art encryption on every call and message — HTTPS, SIP TLS and SRTP throughout.
Reliable network
Multiple data centers and points of presence worldwide back a service you can rely on.
Registered carrier
We operate our own network for better performance, localization and support — not a reseller’s.
Want to talk to the team?
Whether you have a question about the platform or want to see it in action, we’re easy to reach.