Comcast and EarthLink Announce Technical Trial of High-Speed Cable-Based Internet Service.

Business Editors & High-Tech Industry Writers

PHILADELPHIA & ATLANTA--(BUSINESS WIRE)--March 27, 2001

Comcast Cable Communications Inc., a division of Comcast Corporation (Nasdaq:CMCSK)(Nasdaq:CMCSA), and EarthLink (Nasdaq:ELNK), the nation's second-largest Internet services provider, today announced an agreement to offer EarthLink's broadband Internet services in a technical trial over a Comcast cable system.

Planned for the second quarter of 2001 in the Philadelphia area, the trial will allow EarthLink and Comcast to test their services in anticipation of negotiating a definitive agreement.

Under the terms of the arrangement, EarthLink and Comcast will work together to develop and deploy a technical trial under which select Comcast customers will be offered the option of using EarthLink's broadband Internet services through a Comcast Cable connection. Additional terms of the agreement were not disclosed.

This agreement will make EarthLink the second non-affiliated company to test high-speed Internet access over Comcast cable systems. In November of 2000, Comcast and Juno Online Services Inc. announced plans for a similar trial.

"We are interested in learning more about which value-added relationships with ISPs will be most attractive to our customers and look forward to working with EarthLink, one of the nation's largest ISPs," said Steve Burke, president of Comcast Cable. "Based on what we learn from this and other trials, we are eager to move ahead with plans to offer our high-speed Internet customers a choice, which ultimately can benefit our business and that of our ISP partners."

"Cable is a great way to deliver our award-winning high-speed Internet services, so it's crucial to test and hone those services with as many cable partners as possible," said Garry Betty, EarthLink's CEO. "By working aggressively with EarthLink and other unaffiliated ISPs, Comcast has demonstrated the vision and savvy of an industry leader. This trial is the first step in what we hope will be a mutually beneficial partnership with Comcast."

About EarthLink Broadband

With more than 215,000 broadband customers, EarthLink is one of the leading broadband Internet service providers. EarthLink DSL is currently available in more than 70 major metropolitan markets through more than 2,650 Central Offices (COs).

The company also offers its award-winning Internet services through cable, Ricochet(R) and fixed wireless technologies. Its commitment to offer a variety of broadband technologies through multiple vendors allows EarthLink to offer its high-speed services to members in more areas of the country.

About EarthLink

The No. 1 Provider of the Real Internet(TM), EarthLink brings the magic of the Internet to 4.7 million subscribers every day. Headquartered in Atlanta, EarthLink provides a full range of innovative access, hosting and e-commerce solutions to thousands of communities internationally through broadband and wireless technologies, and over 6,500 dial-up points of presence.

EarthLink is committed to doing an exceptional job of pleasing its subscribers, shareholders and the community by following the company's Core Values and Beliefs. Information about EarthLink services is available by calling 800/395-8425 and through EarthLink's Web site at www.earthlink.net.

About Comcast Cable

Headquartered in Philadelphia, Comcast Cable is a division of Comcast Corporation (www.comcast.com), a developer, manager and operator of broadband cable networks and provider of programming content.

Comcast Cable is the third largest cable company in the United States. Providing basic cable, digital cable and high speed Internet services, Comcast Cable is the company to look to first for the communications products and services that connect people to what's important in their lives.

Incorporating pending cable transactions, the company's approximately 18,000 cable division employees will serve more than 8.4 million customers in six geographic regions.

This press release includes certain "forward-looking statements" about EarthLink and Comcast Cable Communications Inc. within the meaning of the Private Securities Litigation Reform Act of 1995. These statements are based on the current expectations or beliefs of the companies' management and are naturally subject to uncertainty and changes in circumstances. Actual results may vary materially from the expectations contained herein due to changes in economic, business, competitive, technological, and/or regulatory factors affecting the companies. More detailed information about these factors is set forth in the companies' respective filings with the Securities and Exchange Commission, including their most recent quarterly report on Form 10-Q. EarthLink and Comcast are under no obligation to (and expressly disclaims any such obligation to) update or alter their forward-looking statements whether as a result of new information, future events, or otherwise.