Nextlink Spurs Alternative Access Market with New Broadband Wireless Reseller Partner Program.

Partners Have Several Options to Extend Network and Market Reach

RESTON, Va. & ORLANDO, Fla. -- In the About Nextlink section, first sentence should read: Nextlink, a subsidiary of XO Holdings, Inc. (OTCBB:XOHO.OB), provides (sted Nextlink, a subsidiary of XO Holdings, Inc., provides).

The corrected release reads:

NEXTLINK SPURS ALTERNATIVE ACCESS MARKET WITH NEW BROADBAND WIRELESS RESELLER PARTNER PROGRAM

Partners Have Several Options to Extend Network and Market Reach

Nextlink Wireless, Inc., one of the nation's largest wireless spectrum holders offering services to the communications service provider, business, and government markets, today launched a new reseller program enabling partners to capitalize on broadband wireless as an alternative access option for their customers' "middle mile" and "last mile" network connectivity requirements.

The new reseller program is another element of Nextlink's strategy as a "carrier's carrier." The launch of this program today at the CompTel PLUS Fall 2006 Convention & Expo in Orlando follows the recent announcement that XO Communications has initiated sales of Nextlink's offerings in nine major markets across the U.S. Now an array of new partners can sign up to resell Nextlink broadband wireless services such as DS-3 and OC-3 broadband wireless access, as well as metro Ethernet at speeds up to 100 Megabits per second. These services are supported by sales and marketing support, training, and customer care from Nextlink.

To fully address the diverse needs of its partners, Nextlink provides two alternatives to resell broadband wireless services:

* Turnkey Plan. Under the Turnkey option, the reseller partner focuses on marketing, sales, and customer site acquisition. Nextlink takes care of everything else required to enable a customer to become operational, including: site set up (encompassing line-of-site and structural analyses, zoning and permitting, and civil work); hardware and installation; system test and acceptance; and ongoing monitoring, repair, and maintenance.

* Self-Serve Plan. With the Self-Serve option, Nextlink manages equipment sourcing, spectrum coordination, and engineering, while the reseller partner is responsible for all other sales, installation, and service-related activities.

"Nextlink's reseller program makes it simple for partners to immediately begin offering broadband wireless service as a high-quality, economical, and easy-to-deploy local access alternative," said Nextlink CEO Bob Beran. "Carriers of all types, as well as cable companies, ISPs and power companies, can extend their network and market reach using Nextlink broadband wireless services, eliminating the high cost and slow installation times typical of fiber optic deployments."

For more additional information about the Nextlink reseller program, please visit www.nextlink.com/contact.htm.

About Nextlink

Nextlink, a subsidiary of XO Holdings, Inc. (OTCBB:XOHO.OB), provides broadband wireless services to the enterprise, fixed and mobile communications and government markets. As one of the nation's largest holders of fixed wireless spectrum, Nextlink delivers high-quality, carrier-grade wireless access solutions that scale to meet the demands of today's converged world of communications - supporting next-generation mobile and wireline voice, data and video applications. For additional information, visit www.nextlink.com.

Forward Looking Statement Note:

The statements contained in this release that are not historical facts are "forward-looking statements" (as such term is defined in the Private Securities Litigation Reform Act of 1995) that involve risks and uncertainties. These statements include those describing Nextlink's expected future business and network operations and results of operations, Nextlink's ability to increase sales and maintain current revenue, and Nextlink's ability to service the demand for high-bandwidth broadband wireless services. Management cautions the reader that these forward-looking statements are only predictions and are subject to a number of both known and unknown risks and uncertainties and actual results, performance, and/or achievements of Nextlink may differ materially from the future results, performance, and/or achievements expressed or implied by these forward-looking statements as a result of a number of factors. These factors include, without limitation, those risks and uncertainties described from time to time in the reports filed by XO Holdings, Inc. (as the successor issuer to XO Communications, Inc.) with the Securities and Exchange Commission, including its Annual Report on Form 10-K for the year ended December 31, 2005 and its quarterly reports on Form 10-Q. XO undertakes no obligation to update any forward-looking statements.