Vonage Holdings Corp. Announces Date of Earnings Release and Conference Call for Second Quarter 2017 Financial Results

HOLMDEL, N.J., July 21, 2017

Management will host a conference call to discuss the second quarter 2017 results and other matters on Thursday, August 3, 2017 at 8:30 AM Eastern Time. To participate, please dial (866) 807-9684 approximately 10 minutes prior to the call. International callers should dial (412) 317-5415.

A webcast will be available through Vonage's Investor Relations website at http://ir.vonage.com. A replay of the call and webcast will be available shortly after the conclusion of the call and may be accessed through Vonage's Investor Relations website at http://ir.vonage.com or by dialing (877) 344-7529. International callers should dial (412) 317-0088. The replay passcode is 10110947.

About Vonage

Vonage (NYSE: VG) is a leading provider of cloud communications services for business. Vonage transforms the way people work and businesses operate through a portfolio of cloud-based communications solutions that enable internal collaboration among employees, while also keeping companies closely connected with their customers, across any mode of communication, on any device.

Vonage's Nexmo API Platform provides tools for voice, messaging and phone verification services, allowing developers to embed contextual, programmable communications into mobile apps, websites and business systems. Nexmo enables enterprises to easily communicate relevant information to their customers in real time, anywhere in the world, through text messaging, chat, social media and voice.

The Company also provides a robust suite of feature-rich residential communication solutions. In 2015 and 2016, Vonage was named a Visionary in the Gartner Magic Quadrant for Unified Communications as-a-Service, Worldwide. Vonage has also earned Frost & Sullivan's 2015 Growth Excellence Leadership Award for Hosted IP and Unified Communications and Collaboration (UCC) Services and the 2016 North American Cloud Communications Product Line Strategy Leadership Award. For more information, visit Vonage Business.