Basking Ridge, NJ, April 10, 2000- AT&T WorldNet® Service today announced a promotional offer for its members in conjunction with Net2Phone(sm). The offer, available through October 10, 2000, is good for up to 1,000 free minutes of domestic long distance calling - from personal computer to phone - using Net2Phone's web-based communications technologies.

"We're thrilled to be able to follow-through on our recent announcement with Net2Phone and offer this new generation of voice-enhanced, web-based communications to our members," said Ed Chatlos, AT&T WorldNet vice president and general manager. "We're always looking for value-added services for our customers and this new technology is at the leading edge of communications technology."

"Inclusion in AT&T WorldNet's site is certainly very important to us," said Howie Balter, CEO of Net2Phone. "We expect AT&T WorldNet members to enjoy the convenience, great rates and added value that Net2Phone brings. We hope this relationship flourishes and look forward to working with AT&T."

WorldNet members who enroll for the Net2Phone offer get their first 1,000 minutes of domestic PC phone calls at no charge, and can then take advantage of a great rate of a penny a minute to anywhere in the 50 states for additional calls. Members may also use this offer to place the equivalent value of international calls with rates as low as 3.9 cents a minute. Additional pricing information for international calls is available during the Net2Phone registration process.

To enroll for the new offer, or for more information, WorldNet members can visit the AT&T WorldNet homepage. Consumers interested in signing up for AT&T's award-winning WorldNet Service can go online to http://www.att.net/.

As an added incentive, members who enroll with Net2Phone before October 10, 2000, will receive a professional telephone headset - a $39.95 value - free of charge (shipping and handling charges also will be waived if members enroll by April 17).

Upon free download and registration, WorldNet users can conveniently place telephone calls from their computers to any telephone around the world. Once installed, the Net2Phone software opens a pop-up window that resembles a traditional telephone, and users can dial telephone numbers on their keyboard just as they would on a regular telephone. Calls are routed over WorldNet's Internet backbone to Net2Phone gateways around the world and then converted to the public switched telephone network, where they are sent to the caller's destination.

Also included in the offer is the complete Net2Phone Communications Package:

· PC Phone Calls - Call anywhere in the world from your PC.
· Free VoiceMail - Allows members to record an audio message and send it out via e-mail - at no charge.
· Free PC to PC - Call any PC and talk at no charge.
· Net2Fax - Fax from your PC to anywhere in the world at excellent rates.

About Net2Phone:
Net2Phone (NASDAQ: NTOP) is a leading provider of voice-enhanced Internet communications services to individuals and businesses worldwide. Net2Phone enables people to place low-cost high quality calls from their computer, telephone, or fax machine to any telephone or fax machine in the world. Net2Phone develops and markets technology and services for IP voice and e-commerce solutions for the web and other IP networks. For more information about Net2Phone's products and services, please visit www.net2phone.com.

About AT&T WorldNet Service:
AT&T WorldNetâ Service (http://www.att.net) is one of the leading Internet Service Providers in the U.S., serving more than 1.5 million customers. It provides reliable, easy Internet access across the nation, 6 e-mail addresses with 10-megabytes of free Web space per e-mail ID, chat, anti-spam service, instant messaging, online communities and access to discounted games. AT&T WorldNet Service was named "Best Buy" in PC World Magazine (March 1999), won PC Magazine's "Editor's Choice" award (April 1999) and was praised as the top ISP in SmartMoney (April 1999).

AT&T WorldNet Service consumer software for Windows 95/98/NT and Macintosh is available by download free-of-charge from the public AT&T WorldNet Web site (http://www.att.net/). For more information on other AT&T products and services go online to http://www.att.com/.

AT&T WorldNet Service is a registered service mark of AT&T.