DSL.net Introduces NETlink Frame Service Offering; Frame relay product provides another private network solution for businesses that need to connect multiple locations.

Business Editors/High-Tech Writers

NEW HAVEN, Conn.--(BUSINESS WIRE)--May 21, 2003

DSL.net (NASDAQ: DSLN), a leading nationwide provider of broadband communications services to businesses, announced today that NETlink Frame has been added to its product portfolio for businesses seeking secure inter-office communications services via a carrier-class frame relay network.

"NETlink Frame is an ideal choice for businesses with multiple points of presence. It serves those companies looking to embrace a wide area network (WAN) for the first time or companies looking to move from older legacy architectures to a more cost-effective solution for a broadband connection to multiple locations," said Ray Allieri, senior vice president of Sales & Marketing of DSL.net. "NETlink Frame gives business customers a better choice in providing a secure, reliable and dedicated connection to branch offices."

Utilizing DSL.net's nationwide network, NETlink Frame offers a carrier-class service that can save from 20 to 70 percent compared to traditional frame relay services offered by major carriers. NETlink Frame provides speeds ranging from 128 Kbps to 1.5 Mbps or higher - all backed by comprehensive service level agreements (SLAs). Frame relay is often the network solution for retail chains, financial institutions, insurance firms, medical institutions, real estate offices and other industries with numerous branch offices.

In addition to its NETlink Frame product, DSL.net offers NETlink VPN, or virtual private network, service for businesses seeking an IP-based network solution. Both NETlink private network solutions ensure that customer data stays on DSL.net's backbone and does not traverse the public Internet.

"Our customers can now choose between different price points and configurations that best meet their budget and IT needs for a secure network," said Keith Markley, president and chief operating officer of DSL.net. "With the recent addition of an integrated voice and data platform that we are layering onto our network infrastructure, DSL.net will be capable of offering one-stop, bundled services in select markets - with plans to continue to roll out integrated voice and data in other major business centers in the Mid-Atlantic and Northeast regions."

DSL.net NETlink Frame is an extension of the former CopperNet Frame Relay product that was offered by Network Access Solutions (NAS). DSL.net acquired network assets and related subscriber lines of NAS earlier this year - including its frame relay business and on-network frame relay customers.

About DSL.net

DSL.net, Inc. is a leading nationwide provider of broadband communications services to businesses. The Company combines its own facilities, nationwide network infrastructure and Internet Service Provider (ISP) capabilities to provide high-speed Internet access, private network solutions and value-added services directly to small- and medium-sized businesses or larger enterprises looking to connect multiple locations. DSL.net product offerings include T-1 and business-class DSL services, virtual private networks (VPNs), frame relay, Web hosting, DNS management, enhanced e-mail, online data backup and recovery services, firewalls and nationwide dial-up services; as well as integrated voice and data offerings in select markets. For more information, visit www.dsl.net, e-mail [e-mail] or [e-mail], or call 1-877-DSL-NET1 (1-877-375-6381).

This press release contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. These forward-looking statements are subject to a variety of risks and uncertainties, many of which are beyond DSL.net's control, which could cause actual results to differ materially from those contemplated in these forward-looking statements. In particular, the risks and uncertainties include, among other things, (i) DSL.net's ability to execute its business plan in a timely manner to generate the forecasted financial and operating results and liquidity; (ii) DSL.net's need for additional funds during 2003, which may not be available on acceptable terms or at all, which could adversely impact DSL.net's ability to implement its business plan and continue its operations; (iii) failure to generate sufficient revenue, contain certain discretionary spending, achieve certain other business plan objectives or obtain additional capital could have a material adverse effect on DSL.net's results of operations or financial position, or cause it to pursue strategic alternatives or discontinue some or a significant portion of its operations; (iv) the completion of the acquisition of the TalkingNets assets and, if completed, the successful integration of those assets into DSL.net; (v) DSL.net's ability to realize the revenue, earnings, synergies and other benefits anticipated from the acquisition of the TalkingNets assets; (vi) risks associated with acquisitions, including difficulties in identifying and completing acquisitions, integrating acquired businesses or assets and realizing the revenue, earnings or synergies anticipated from any acquisitions; (vii) competition; (viii) risks associated with the possible removal of DSL.net's common stock from the Nasdaq SmallCap Market, which removal could adversely impact the pricing and trading of DSL.net's common stock; and (ix) regulatory, legislative and judicial developments, which could adversely affect the way DSL.net operates its business. Existing and prospective investors are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date hereof. DSL.net undertakes no obligation, and disclaims any obligation, to update or revise the information contained in this press release, whether as a result of new information, future events or circumstances or otherwise. For additional information regarding these and other risks faced by DSL.net, see the disclosure contained under "Risk Factors'' in DSL.net's Annual Report on Form 10-K for the year ended December 31, 2002, which has been filed with the Securities and Exchange Commission.

DSL.net is a trademark of DSL.net, Inc. Other company names may be trademarks of their respective owners. Comparative price savings information is based on tariffs filed by major carriers.