AboveNet Expands High Bandwidth Services Portfolio in London

Metro Ethernet and Core Wave services provide low latency, high bandwidth data networks across an extensive footprint including Slough, The City and Docklands

WHITE PLAINS, New York and LONDON, November 11, 2010 - AboveNet, Inc. (NYSE: ABVT), a leading provider of high bandwidth
connectivity solutions, today announced its expanded Metro Ethernet and
dynamic Core Wave services in the London metro market. The new solutions will
help meet customer demand for dedicated, high performance and high bandwidth
solutions and facilitate seamless connectivity between London's business and
data hubs.

AboveNet operates one of the most extensive independent London metro
networks stretching from Slough through the Docklands with significant
capability in connecting locations in The City and Central London to these
data center hubs. AboveNet's solutions are optimized for high bandwidth
customers, with a particular focus on Ethernet services with high performance
features, flexibility and scalability.

The company's further investment in metro area network (MAN) services in
London follows AboveNet's network expansion to strategic locations in Europe.
AboveNet now connects to buildings with more than 400 data centers worldwide,
including 35 of the most significant in the London metro market. The extended
network reach combined with the new MAN solutions will enable dynamic, high
bandwidth connectivity between London and the top business centers in the
U.S. and Europe.

"AboveNet continues to invest in global markets where the need for high
bandwidth solutions is growing at an exponential rate," said Rajiv Datta,
chief technology officer at AboveNet. "With demonstrated success in
delivering our services in London for over a decade, we are investing to
ensure this premier global business hub is equipped with our flagship-level
capabilities and service features."

The next-generation metro Ethernet and Core Wave solutions offer a
cost-effective, high bandwidth data network for point-to-point and multipoint
connections in and between the London metro markets. Benefits include:

    - 100mbps, 1Gbps, 2.5Gbps, and 10Gbps connections;
    - advanced features including privacy, security and jumbo frame
      support;
    - extensive customer choice with scalable technology platforms;
    - converged access options to add multiple services over the same
      network;
    - space and power savings and rapid service turn-up;
    - industry-leading latency guarantee with AboveNet's Agility
      Guarantee program
      (www.abovenet.com/programs/agility/?source=productME).

London metro customers also can leverage AboveNet's expansive network
footprint for international business connectivity. This infrastructure
includes 2.3 million fiber miles, an intercity network spanning approximately
12,000 route miles, and a global Tier 1 IP backbone.

"AboveNet's upgrade of its London metropolitan network will address the
growing demand for high bandwidth, low latency services, and significantly
advance their competitive position in this critical market," said Steve
Alexander, senior vice president and chief technology officer at network
specialist Ciena, which is supplying AboveNet with optical equipment to
support its services portfolio. "By leveraging leading-edge technologies such
as ROADMs and our 40G/100G Adaptive Optical Engine, AboveNet is
future-proofing its network with a flexible and scalable architecture,
allowing it to continue delivering on the growing capacity and service
demands of its customers."

For more information about AboveNet's complete portfolio of high
bandwidth solutions in London, please visit www.abovenet.co.uk.

About AboveNet

AboveNet, Inc. is a leading provider of high bandwidth connectivity
solutions for businesses and carriers. Its private optical network delivers
key network and IP services in and between top U.S. and European markets.
AboveNet's network is widely used in demanding markets such as financial and
legal services, media, health care, retail and government. More information
is available at www.above.net.

Kristen Hyland, AboveNet Public Relations, +1-914-993-1250, khyland at above.net, or Melissa Miller, AboveNet PR (UK), +44(0)20-7220-3856, mmiller at above.net