Vonage Enjoined; Company Expresses Confidence in Obtaining Stay and in Appeal and Ability to Deliver Uninterrupted Service to Customers

The U.S. District Court in Alexandria, Va. today issued an order enjoining Vonage from using certain VoIP technology named in its patent litigation with Verizon. The order is not immediately effective, however, and Vonage is confident its customers will see no change in their phone service.

The court announced its intent to hear stay argument in two weeks' time. At that time, the court intends to render a decision regarding the stay, as well as making the injunction effective. If the court denies the stay, Vonage will seek a stay through appeal from the Federal Court of Appeals. Vonage is confident it will be able to obtain a stay through appeal.

"We are confident Vonage customers will not experience service interruptions or other changes as a result of this litigation," said Mike Snyder, Vonage's chief executive officer.

The company has drafted its notice of appeal of the March 8 jury verdict and will file that notice at the appropriate juncture in the court proceedings.

"Our fight is far from over," Snyder said. "We remain confident that Vonage has not infringed on any of Verizon's patents - a position we will continue vigorously contending in federal appeals court - and that Vonage will ultimately prevail in this case."

Snyder continued, "Despite this obvious attempt by Verizon to cripple Vonage, the litigation will not stop Vonage from continuing to provide quality VoIP service to our millions of customers."

"Our appeal centers on erroneous patent claim construction, and we remain confident that Vonage has not infringed on any of Verizon's patents - a position we will continue to vigorously assert in federal appeals court," said Sharon O'Leary, Vonage's executive vice president, chief legal officer and secretary. "Vonage relied on open-standard, off-the-shelf technology when developing its service. In fact, evidence introduced in court failed to prove that Vonage relied on Verizon's VoIP technology, and instead showed that in 2003 Verizon began exploring ways to copy Vonage's technology," she added.

The company is focused on growing its business by investing in the rollout of new technology and features, and continuing to grow its customer base. Vonage's accomplishments continue to validate its business model and strategy. The company has achieved 19 consecutive quarters of double-digit revenue growth, doubled revenues to $607 million in 2006 alone, and added nearly 1 million net subscriber lines last year.

About Vonage

Vonage (NYSE: VG) is a leading provider of broadband telephone services with over 2.2 million subscriber lines. Our award-winning technology enables anyone to make and receive phone calls with a touch tone telephone almost anywhere a broadband Internet connection is available. We offer feature-rich and cost-effective communication services that offer users an experience similar to traditional telephone services.

Our Residential Premium Unlimited and Small Business Unlimited calling plans offer consumers unlimited local and long distance calling, and popular features like call waiting, call forwarding and voicemail -- for one low, flat monthly rate. Vonage's service is sold on the web and through national retailers including Best Buy, Circuit City, Wal-Mart Stores Inc. and Target and is available to customers in the U.S., Canada and the United Kingdom. For more information about Vonage's products and services, please visit http://www.vonage.com.

Vonage Holdings Corp. is headquartered in Holmdel, New Jersey. Vonage(R) is a registered trademark of Vonage Marketing Inc., a subsidiary of Vonage Holdings Corp.

Safe Harbor Statement

This press release contains forward-looking statements regarding Vonage's financial position. In addition, statements in this press release that are not historical facts or information may be forward-looking statements. The forward-looking statements in this release are based on information available at the time the statements are made and/or management's belief as of that time with respect to future events and involve risks and uncertainties that could cause actual results and outcomes to be materially different. Important factors that could cause such differences include, but are not limited to, our history of net operating losses and our need for cash to finance our growth; the competition we face; our dependence on our customers' existing broadband connections; differences between our service and traditional phone services, including our 911 service; uncertainties relating to regulation of VoIP services; system disruptions or flaws in our technology; our ability to manage our growth; the risk that VoIP does not gain broader acceptance; and other factors described in the "Risk Factors" section of our registration statement on Form S-1, as amended (File No. 333-136773), and in our subsequent periodic reports filed with the SEC. While we may elect to update forward-looking statements at some point in the future, we specifically disclaim any obligation to do so, and therefore, you should not rely on these forward- looking statements as representing our views as of any date subsequent to today.