XO Communications Promotes Laura W. Thomas to Chief Financial Officer

HERNDON, VA, Jun 16 (MARKET WIRE) --
XO Communications (OTCBB: XOHO) today announced that Laura W. Thomas has
been promoted to chief financial officer (CFO), effective June 14, 2009.
In her role as CFO, Thomas will lead XO Communications' financial
strategy including all reporting, auditing, taxation and investor
relations functions. She will work with the company's senior executive
team to develop and implement the company's long-term business strategy
and will report directly to Carl Grivner, chief executive officer.

Thomas brings more than 30 years of experience in finance and
telecommunications to the position. During the past nine years, Thomas
served as vice president of finance for XO Communications. In this
capacity, she oversaw various financial and accounting functions including
revenue accounting, billing, business planning and analysis, external
Security and Exchange Commission reporting and Sarbanes Oxley compliance,
among other responsibilities. Thomas also worked closely with the senior
executive team to manage the company's financial position as it
transformed into a broadband-focused telecommunications provider.

In her role as CFO, Thomas will be responsible for leveraging this recent
transformation to lay the foundation for the future.

"A proven leader with a strong track record of operational achievement,
Laura's expertise and ability to manage across a broad range of finance
and accounting functions equips her to tackle the demands and
opportunities of this invaluable position," said Grivner. "As XO
continues its strategic growth in broadband, having a well experienced
and trusted financial professional at the helm will be critical to our
continued success."

Prior to joining XO Communications, Thomas was the vice president of
finance at Concert Communications, a joint venture between AT&T and
British Telecom. In this role, she served as acting CFO for six months
and managed all revenue and telecommunications accounting functions. She
also served as director of finance at MCI Communications where she
directed revenue reporting and analysis, as well as managed investor
relations and financial planning across all of MCI's business units.

Thomas earned her Master's of Business Administration from George
Washington University, as well as a Bachelor's of Arts degree in French
and Business from Radford University.

About XO Communications

XO Communications, a subsidiary of XO Holdings, Inc. (OTCBB: XOHO), is a
leading nationwide provider of advanced communications services and
solutions for businesses, enterprises, government, carriers and service
providers. Its customers include more than half of the Fortune 500, in
addition to leading cable companies, carriers, content providers and
mobile network operators. Utilizing its unique combination of
high-capacity nationwide and metro networks and broadband wireless
capabilities, XO offers customers a broad range of managed voice, data
and IP services with proven performance, scalability and value in more
than 75 metropolitan markets across the United States. For more
information, visit www.xo.com.

Media Contacts:
Courtney Harper
Reputation Partners (for XO Communications)
312-819-5722
Email Contact

Charlotte Walker
Reputation Partners (for XO Communications)
312-819-5723
Email Contact

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