Business/Hi-Tech Editors

NEW YORK--(BUSINESS WIRE)--June 20, 2000

EarthStation Will Gain Multi-Gigabit Network Capacity Within

Philadelphia and Washington, D.C., and Between the Cities

Metromedia Fiber Network, Inc. (MFN) (Nasdaq:MFNX), the leader in deployment of optical IP Internet infrastructure within key metropolitan areas internationally, will provide fiber-optic infrastructure to EarthStation Netaxs (EarthStation), a first-Tier Internet Service Provider (ISP).

MFN will lease fiber to EarthStation throughout the downtown and surrounding suburban areas of Philadelphia and Washington, D.C., as well as provide long-haul capacity between the cities.

Using MFN's optical Internet backbone, EarthStation will provide its clients with high-speed, high-bandwidth Internet applications and connectivity. EarthStation, a regional ISP in the Mid-Atlantic and Northeast corridors, provides dedicated Internet access to businesses, educational institutions and other ISPs. The network and its associated equipment are capable of delivering 32 times more capacity than an OC-192, or the equivalent of 9.9 gigabits per second. In addition, the redundancy of the network will enable EarthStation to reduce significantly chances of a network outage and will allow the company to deliver its Internet traffic to other networks quickly and cost-effectively.

"MFN's optical Internet infrastructure allows service providers like EarthStation to offer Internet access at broadband-level capacity, enabling an entirely new class of bandwidth-intensive applications," said Nick Tanzi, president and chief operating officer of Metromedia Fiber Network. "Through this agreement, EarthStation will gain access to unshared, fully scaleable bandwidth at a fixed cost, allowing the company to deliver its full suite of Internet solutions, such as T-1 to OC12+ level IP connectivity, high-speed DSL, Web hosting, e-commerce, and Internet-smart buildings."

"MFN's infrastructure will allow us to provide our customers with a network that is one hundred percent optimized for IP traffic and to add bandwidth quickly as our customer base and our customers' needs grow," said Jeff Pasquale, president and CEO of EarthStation Netaxs. "We will 'light up' two-gigabits of the network immediately to further position EarthStation Netaxs at the forefront of the Internet industry in the Mid-Atlantic and the Northeast."

About EarthStation Netaxs

EarthStation Netaxs is a First-Tier Internet Service Provider, providing a full gamut of Internet Services ranging from OC12+ level IP Connectivity to T-1 to dialup and DSL, as well as server colocation and web hosting services. For more information, visit the company's Web site at www.earthstation.net.

About Metromedia Fiber Network, Inc.

Metromedia Fiber Network, Inc., the leading provider of optical IP Internet infrastructure network solutions, is revolutionizing the fiber optic industry. By offering virtually unlimited, unmetered bandwidth at a fixed cost, Metromedia Fiber Network is eliminating the bandwidth barrier and redefining the way broadband capacity is sold. Metromedia Fiber Network is extending metropolitan fiber optic infrastructure to the end user in strategic top-tier markets, enabling its customers to implement the latest data, video, Internet and multimedia applications. In addition to its current expansion in 51 cities in North America, Metromedia Fiber Network is establishing an international presence with planned fiber optic network builds in 16 cities throughout Europe. For more information about Metromedia Fiber Network, please visit the company's Web site at www.mmfn.com.

Together with its subsidiaries, AboveNet Communications, Inc., a leading provider of Internet connectivity and co-location solutions for high bandwidth and business-critical applications, and Paix.net, Inc., the leading neutral Internet Exchange, Metromedia Fiber Network is unleashing the full potential of the Internet. The combined company facilitates the explosive growth of e-commerce and advanced Internet applications by delivering secure, reliable and scalable optical networks and IP services to Internet content and service providers, carriers and enterprise users worldwide. AboveNet is the architect of the Internet Service Exchange (ISX) -- a world-class network that provides co-location services and Internet connectivity for content providers, ISPs and application service providers. With its Tier 1 status and ISO 9002 certification, AboveNet is seeking to serve the global community of the Internet. For more information on AboveNet's service offering call 800/475-2733 or visit the company's Web site at www.above.net.

AboveNet, Internet Service Exchange, ISX, and AboveNet Global One-Hop Network are trademarks of AboveNet Communications, Inc. All other company or brand names may be trademarks of the respective companies with which they are associated.

This news release contains certain forward-looking statements that involve risks and uncertainties. Factors that could cause or contribute to such risks and uncertainties include, but are not limited to, general economic and business conditions, competition, changes in technology and methods of marketing, and various other factors beyond the Company's control. This also includes such factors as described from time to time in the SEC filings by Metromedia Fiber Network, including the most recently filed Forms S-3, 10-K and 10-Q