AboveNet Launches low Latency Connectivity Between key Financial Centres in London and New York

Leading High-Bandwidth Connectivity Provider Offers one of the Industry's Fastest end-to-end Transatlantic Connections for Demanding low Latency Applications

LONDON and WHITE PLAINS, New York, March 15, 2010 - AboveNet, Inc. (NYSE: ABVT), a leading provider of high-bandwidth
connectivity solutions, has launched one of the industry's fastest, low
latency end-to-end transatlantic connections between London and New York,
reaching key financial locations in:

London: Slough, The City and Docklands

New York Metro: Manhattan and New Jersey, including: Newark, Weehawken,
Secaucus, Carteret, and Clifton

AboveNet's new low latency transatlantic service is targeted specifically
at the financial sector, supporting critical applications such as foreign
exchange trading and market data feeds. "With venues such as Chi-X now
operating out of Equinix in Slough and NASDAQ operating out of Carteret, New
Jersey, we're seeing a growing requirement for low latency transatlantic
connectivity. We're expecting strong demand for our premium service from
organizations such as investment banks, hedge fund operators, as well as
foreign exchange and equities traders," commented Director of Sales and
Marketing for AboveNet UK, Alan Berryman. "Because we can now guarantee every
aspect of our transatlantic and metro services, customers can always rely on
AboveNet to deliver the low latency performance their business demands,"
Berryman further added.

This premium service is backed by one of the industry's strongest SLAs
under AboveNet's Agility Guarantee program. The programme provides guarantees
on the transatlantic service by combining one of the shortest transatlantic
cable systems with the most direct terrestrial backhaul link into New York
and Slough. In addition, AboveNet also provides latency guarantees for as low
as sub-1ms round-trip for access to hundreds of buildings in the New York and
London metro markets.

AboveNet Chief Technology Officer, Rajiv Datta, said, "Adding the low
latency capability between New York and London is a natural extension of our
industry-leading Agility Guarantee program. In addition, we can now provide
high bandwidth connectivity between London and our 16 U.S. markets for a
broad range of customer applications."

AboveNet, Inc. provides high-bandwidth connectivity solutions for
business and carriers. Its private optical network delivers key network and
IP services in and among top U.S. metro markets and globally. AboveNet's
network is widely used in demanding markets such as financial services,
media, health care, retail and government. To learn more go to
www.above.net.

For further enquiries, please call +44(0)207-220-3822

Contact: Fiona Burke - UK Tel: +44-20-7220-3866, fiona.burke at above.net; MaryBeth Nance - US Tel: +1-571-262-2865, mnance at above.net