RESTON, Va. -- XO Holdings, Inc. (BULLETIN BOARD: XOHO.OB) today reported its fourth quarter and full year 2005 financial and operational results.

Revenue for the fourth quarter ended December 31, 2005 was $351.3 million compared with $358.7 million in the third quarter of 2005 and $369.4 million reported in the fourth quarter of 2004. Revenue for the year ended December 31, 2005 was $1.43 billion compared with $1.3 billion for the prior year. The increase in revenue in 2005 reflects a full year of revenue from the acquired Allegiance Telecom assets compared to six months of revenue from the Allegiance Telecom assets in 2004.

Consolidated net loss for the fourth quarter of 2005 was $43.5 million, compared with a consolidated net loss of $30.6 million in the third quarter of 2005 and a consolidated net loss of $271.4 million in the fourth quarter of 2004. Consolidated net loss for the full year 2005 was $146.5 million compared with $405.5 million for the prior year.

Consolidated adjusted EBITDA(1) for the fourth quarter of 2005 was $16.2 million compared with consolidated adjusted EBITDA of $34.0 million in the third quarter of 2005 and $21.9 million consolidated adjusted EBITDA in the fourth quarter of 2004. Consolidated adjusted EBITDA for the fourth quarter of 2005 included favorable carrier settlements of $7.6 million, compared with $8.5 million for the third quarter of 2005 and $11.9 million of selling, operating and general (SOG) expense settlements for the fourth quarter of 2004. Consolidated adjusted EBITDA for the full year 2005 was $108.4 million compared with $20.0 million for the prior year.

"In 2005, XO made substantial financial and operational progress over the previous year," said Carl Grivner, CEO of XO Holdings. "We completed the integration of the Allegiance Telecom network and operations, showing significant cost savings during the first full year of results for the combined XO and Allegiance Telecom businesses. In addition, year over year we reduced our net loss, delivered significantly increased adjusted EBITDA and improved our margins."

XO Communications Inc.