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RingCentral was founded by Vlad Shmunis and Vlad Vendrow. The company originally operated as RingZero, focused on small business communications on Microsoft Windows.
RingCentral received its first round of venture capital investment in 2006. By 2011, it had secured $45 million in capital investment, with Cisco and Silicon Valley Bank among its investors. It completed its IPO on September 27, 2013, followed by a follow-on offering in March 2014 that raised an additional $39.8 million.
In 2018, RingCentral became a founding partner of the Chase Center as well as the exclusive cloud communications provider for the Golden State Warriors.
In February 2020, RingCentral and Avaya unveiled the Avaya Cloud Office application.
In April 2020, RingCentral launched RingCentral Video, a video-conferencing product that completed its Message Video Phone (MVP) solution. The RingCentral MVP app launched in May 2020.
In 2021, RingCentral entered an exclusive UCaaS partnership with Mitel, granting Mitel's users access to RingCentral's cloud communications platform. In December, the company introduced common integrations for MVP with enhanced data protections.
Mo Katibeh, formerly of AT&T, was appointed as president and COO in January 2022.
RingCentral began offering its MVP and Contact Center features to Amazon Web Services (AWS) in February 2023. That same year, it launched RingSense, an AI platform.
In April 2023, Vodafone Italy and RingCentral partnered to roll out Vodafone Business UC, followed by a similar rollout in Portugal in May 2023, combining RingCentral’s messaging and video tools with Vodafone’s fixed and mobile voice services. The next generation of RingCentral for Microsoft Teams 2.0 was announced in May 2023. The embedded app integrates RingCentral's cloud PBX, softphone dialer, SMS, and fax capabilities directly into the Microsoft Teams platform interface.
In June 2023, RingCentral became the first global cloud provider to offer fully compliant cloud phone system services in India.
On August 28, 2023, Tarek Robbiati was appointed CEO. In 2024, founder Vlad Shmunis returned to the CEO role.
In May 2025, RingCentral launched RingCX for Salesforce Service Cloud Voice, followed by the release of its AI Receptionist (AIR), which automates front desk call handling. AIR Pro, a voice-first AI agent platform that automates customer interactions across SMS, chat and digital channels, was launched in March 2026.
On July 28th, 2026, RingCentral acknowledged it had been the victim of a targeted attack by the hacker group ShinyHunters, which resulted in a data breach of approximately 623GB of data, including the release of over 1.6 million customer account records.