Metromedia Fiber Network Offers Dark Fiber Connectionto the Internet, Scaleable to...

Business Editors/High-Tech Writers

NEW YORK--(BUSINESS WIRE)--Nov. 14, 2000

Virtual ISX Solution Allows Customers to Distribute Content

Without Physically Co-Locating in Hosting Center

Metromedia Fiber Network, Inc. (MFN) (Nasdaq:MFNX), the leader in deployment

Called Virtual ISX, this is the first optical Internet connection to leverage the virtually unlimited bandwidth and fixed cost of dark fiber with a scaleable IP backbone, eliminating the bandwidth constraints typically encountered with traditional networks. Virtual ISX uses Wavelength Division Multiplexing (WDM) technology over dark fiber so customers can grow and scale their Internet bandwidth on demand. Virtual ISX supports multiple-gigabit-per-second connections without the need to change the infrastructure, and dark fiber can accommodate up to multi-terabit-per-second capacity for future needs.

In addition, Virtual ISX provides redundant, private connections to bring the same security, reliability and superior Internet connectivity to customers that they would have if their servers were located in an Internet Service Exchange (ISX) facility. Mission-critical equipment can remain on customer premises while the customer takes advantage of the superior performance of MFN's global IP network.

"The Virtual ISX solution is an excellent example of how our metropolitan dark fiber network and superior IP backbone function together to bring unlimited scaleability directly to the customer," said Nick Tanzi, president and chief operating officer of Metromedia Fiber Network. "With the Virtual ISX solution, customers can now choose to access MFN's industry leading global IP infrastructure via dark fiber from their own premises with the same superior level of performance that they would get if they co-located their servers in our data centers."

Virtual ISX is a fully managed optical solution currently available in the New York and Washington, D.C. metropolitan areas.

About Metromedia Fiber Network, Inc.

Metromedia Fiber Network, Inc., the leading provider of end-to-end optical 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 scaleable 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.

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.

Note to Editors: AboveNet and Internet Service Exchange, ISX, are trademarks of AboveNet Communications, Inc. All other company or brand names may be trademarks of the respective companies with which they are associated.