DSL.net Launches New DS-3 Service for Businesses; NETgain 45 Delivers Broadband Connections Up to 45 Mbps.

Business Editors

NEW HAVEN, Conn.--(BUSINESS WIRE)--March 9, 2004

DSL.net, Inc. (NASDAQ: DSLN), a leading nationwide provider of broadband communications services to businesses, said today that it has added a new high-speed connectivity offering of up to 45 megabits (Mbps) to its product portfolio for business customers with extensive bandwidth needs.

The new offering, called NETgain 45, is a DS3-based, high-bandwidth, broadband Internet connection that includes DNS management, routable IP addresses and 24/7 technical support. This high-speed connection is ideal for businesses that are running high-bandwidth applications or those with a virtual private network (VPN) that includes a large number of locations.

"Formally adding a DS-3 service to our product portfolio is a natural progression for DSL.net. We have substantially expanded our network reach and increased network capacity as a result of strategic acquisitions during 2003," said Keith Markley, president and chief operating officer of DSL.net. "In addition to our core SDSL service, we also began offering T-1 service two years ago - and have seen T-1 sales increase significantly during that time. By bringing DS-3 service into our product mix, we can further improve margin, create a new revenue stream and continue to meet the growing bandwidth needs of business customers."

NETgain 45 is offered in fractional speeds starting at 3 Mbps all the way up to maximum DS-3 speeds of 45 Mbps. By comparison, T-1 and SDSL services provide a broadband connection of up to 1.5 Mbps. NETgain 45 is available in select markets. In conjunction with its expanded broadband network, DSL.net already has been provisioning DS-3s for its wholesale data communications customers during the last year. NETgain 45 broadens DS-3 service availability via DSL.net's direct sales force.

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, DS-3 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 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) the marketplace's receptiveness to DSL.net's offering of high-bandwidth circuits; (ii) DSL.net's unproven business model, which may not be successful; (iii) DSL.net's ability to execute its business plan in a timely manner to generate sufficient revenue, contain certain discretionary spending or achieve certain other business plan objectives; (iv) regulatory, legislative and judicial developments, which could adversely affect the way DSL.net operates its business; (v) competition; and (vi) DSL.net's dependence on third-party providers to supply it with local DSL and T-1 facilities in areas where it has not deployed its own equipment. 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.