AboveNet, EANTC and Equinix Complete Interoperability Tests for London to Frankfurt Network

AboveNet Infrastructure Supports Carrier Ethernet Standards for Interoperability

WHITE PLAINS, New York and LONDON, April 13, 2011 - AboveNet, Inc. (NYSE:ABVT), a leading provider of high bandwidth
connectivity solutions, today announced its successful completion of real
world pan-European interoperability tests carried out by the European
Advanced Networking Test Center (EANTC) across Equinix's Carrier Ethernet
Exchange (ECEE) platform between London and Frankfurt.

By participating in the EANTC tests, AboveNet has further validated its
product portfolio capabilities and compliance with MEF (Metro Ethernet Forum)
standards for quality and interoperability. By adding two new Equinix Carrier
Ethernet Exchange locations in Europe to its existing US connections provides
an even wider audience access to AboveNet's extensive Ethernet, VPN and IP
suite of products.

According to leading analysts, the growing demand for Ethernet services
is expected to reach $40 billion by 2015. Utilising the Equinix Carrier
Ethernet Exchange will provide AboveNet a platform to interconnect to other
exchange members for fast, scalable deployments.

"Equinix is delighted that AboveNet participated in the interoperability
testing process as it helps us demonstrate our leadership in the development
and deployment of Carrier Ethernet services," commented Jim Poole, General
Manager, Global Networks and Mobility at Equinix.

Brett Johnson, vice president, Business Development in Europe at AboveNet
commented, "AboveNet's successful completion of the interoperability testing
by EANTC coincides with a rapid acceleration of our Ethernet services and
network expansion across Europe."

"The interoperability test results prove our commitment to the
provisioning of Ethernet services through carrier exchange platforms. Our
customers will benefit as we will be able to rapidly deploy our services to
more locations and offer our customers the enhanced levels of service they
expect from AboveNet."

Equinix Carrier Ethernet Exchange is a global, network-neutral service
that improves quality and reduces the cost and complexity of facilitating
transactions between Layer 2 Ethernet networks.

EANTC, based in Berlin, Germany, offers independent telecom network test
services including interoperability and performance testing across multiple
platforms. AboveNet supplied its eWAN service between London & Frankfurt
enabling EANTC to build and test both point to point and point to multipoint
network topologies, proving carrier Ethernet interoperability in a pan
European environment.

About AboveNet

AboveNet, Inc. is a leading provider of high bandwidth connectivity
solutions for business 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

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