Zogby International and Decidia Select Concentric for Web Hosting Infrastructure

SAN JOSE, Calif., -- Oct. 15, 2004 -- XO Communications, Inc. (OTC Bulletin Board: XOCM.OB - News) today announced its small and medium sized business hosting brand, Concentric, has been selected by Zogby International and Decidia, Inc. as the web hosting partner behind a new online decision making tool called Presidential Guidester(TM) (http://www.presidentialguidester.com). The Guidester tool assists users in determining the candidate which best represents their views, and is expected to generate significant traffic leading up to the elections.

"We are excited to be a part of bringing this timely and innovative online tool to fruition," said Barbara Branaman, vice president and general manager of the XO hosting business unit. "Our patented architecture is designed to scale and adapt in real-time to demand fluctuations, making our hosting solution ideal for delivering a stable, reliable online experience for users."

Web-based Presidential Guidester will allow users to rate economic, social and budgetary issues, along with the personal attributes of presidential candidates. It then scores the presidential candidates, using a percentage, to show voters which candidate best represents their point of view. The score is powered by Zogby's polling data. Presidential Guidester will include viewpoints and information from various news organizations, political pundits and celebrities who are partnering with Decidia Inc. and Zogby International for this project.

"We are glad to have XO and their Concentric service on board for this important project, and selected them because of their technology, reputation, and the success we have had with them on other major projects," said Joe Chin, president of Decidia Inc. Chin noted that the free tool can be easily included in any news, media, political or content-based website.

The Concentric web hosting packages offer generous allocations of email, traffic and disk space, with plans starting as low as $7.95 per month with a 24-month term commitment. The packages are designed to deliver small and medium sized businesses a robust hosting solution that cost effectively accommodates their budget requirements. The Concentric service provides Unix and Windows-based hosting packages that enable real-time Web site creation, along with domain name registration, branded email addresses and value-add services to fully market and sell online.

About Decidia, Inc.

Headquartered in New York, Decidia is the leading web-based Decision System provider. Decidia uses innovative user-interface techniques, AI (artificial intelligence), sophisticated algorithms, and XML (Extensible Markup Language) technologies, to help consumers and businesses make complex

decisions, including finding the right product over the Web. For more
information, visit http://www.decidia.com.

About Concentric

Concentric, an XO Communications service, offers business-grade web hosting solutions that cost-effectively scale to meet the needs of today's growing businesses. With its patented Web hosting architecture, Concentric has designed a unique platform that delivers superior performance, reliability and security. Backed by an industry leading 99.9% SLA, a 3-Month Satisfaction Guarantee along with 24x7 customer care, Concentric offers web site hosting, email, ecommerce, sophisticated junk mail filtering and web builder tools designed to help companies effectively leverage the power of the Internet. For more information, visit http://www.concentric.com or call 866-500-9696.

About XO Communications

XO Communications is a leading provider of national and local telecommunications services to businesses, large enterprises and telecommunications companies. XO offers a complete 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, national facilities-based IP network and serves more than 70 metropolitan markets across the United States. For more information, visit http://www.xo.com.