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XOHO XO Communications to Provide High Capacity Network Services to China Netcom USA

RESTON, Va., May 21, 2007 /PRNewswire-FirstCall via COMTEX/ -- XO Communications
today announced that it has signed an agreement with China Netcom (USA)
Operations Ltd. ("China Netcom USA") to provide high capacity network services
across the United States. Under the terms of the multi-year agreement, XO
Communications will provide China Netcom USA with multiple inter-city XO(R)
Wavelength Services at 2.5 Gigabits per second speeds across a nationwide
footprint connecting China Netcom's points of presence in the United States.

China Netcom is China's leading broadband and telecommunications company and a
leading international data communications operator for multinational business
customers. In addition, China Netcom's USA Operations provides clients with
direct IP connectivity to CNC domestic China IP network as well as IPL and MPLS
VPN capabilities between the USA and China.

"We selected XO Communications because its nationwide network offers the
reliability and scalability to support our growing bandwidth requirements in the
United States," said Lou Xiaohang, President of China Netcom USA.

"We are very pleased to be selected by China Netcom USA as a major network
infrastructure provider," said Ernie Ortega, president of XO Carrier Services.
"The investments XO has made in its network give customers like China Netcom the
capacity and scalability to grow their business over XO's extremely robust, next
generation network."

With one of the largest and most advanced IP networks in the United States, XO
Communications offers cable companies, carriers, content providers, large
enterprises and wireless service providers a broad range of high capacity network
transport services, including Ethernet, IP Transit, Private Line and Wavelengths.
XO Communications continually invests in its network to offer customers the most
advanced, reliable and scalable network infrastructure to support their current
and future bandwidth and communications service requirements.

For more information about XO Carrier Services, go to
http://www.xo.com/products/carrier or contact an XO Carrier Services sales
representative by calling [phone].

About China Netcom

As an official partner of 2008 Beijing Olympic Games, China Netcom is one of
China's leading broadband communications and fixed-line telecommunications
operators. Its northern service region consists of Beijing Municipality and
Tianjin Municipality, as well as the provinces of Hebei, Henan, Shandong,
Liaoning, Heilongjiang, Jilin, Neimenggu Autonomous Region (Inner Mongolia) and
Shanxi. In all of these regions, the Company is the dominant provider of
fixed-line telephone services, broadband and other Internet-related services, as
well as business and data communications services. Its southern service region
consists of Shanghai Municipality and Guangdong Province. In these regions, the
Company focuses on providing telecommunications services to enterprises and high
usage residential customers in selected densely populated areas.

About China Netcom USA Operations LTD

China Netcom USA Operations LTD is China Netcom's local operating unit in North
America, headquartered in Los Angeles, CA. With points of presence in Los
Angeles, San Jose and New York City, China Netcom USA offers services include
International Private Line Service from US to China and Asia Pacific, Direct
connectivity to China Netcom's domestic China IP network and MPLS / VPN services
to China.

About XO Communications

XO Communications, a subsidiary of XO Holdings, Inc. (XOHO), is a leading
provider of national and local telecommunications services to businesses, large
enterprises and communications service providers. XO offers a broad portfolio of
services, including local and long distance voice, dedicated Internet access,
private networking, data transport, and Web hosting services as well as bundled
voice and Internet solutions. XO provides these services over an advanced,
nationwide facilities-based IP network and serves 75 metropolitan markets across
the United States. For more information, visit http://www.xo.com.

SOURCE XO Communications
Chad Couser of XO Communications, [phone], [e-mail]

http://www.xo.com/