XO Communications (previously Nexlink Communications and Concentric Network Corporation [1]) is a United Statestelecommunications firm and one of the largest Competitive Local Exchange Carrier (CLEC) in the country. It is owned by XO Holdings, IncOTCBB: XOHO. XO provides voice, data and IP services to businesses and other telecommunications companies in 75 metropolitan markets across the United States. Its customers include small and medium-sized business, large enterprises, cable companies, content providers, telecommunications companies and wireless service providers.
XO is a facilities-based backbone provider in the U.S. XO operates a nationwide OC-192Tier 1 network and owns significant fiber optic network assets, including an 18,000 route-mile inter-city network and more than 9,000 route-miles within 40 major metropolitan markets. XO currently carries more than 15 billion minutes of Voice over IP (VoIP) traffic across its network each year.
Services
The company offers a broad range of services to businesses and its wholesale customers. These services include:
Local and Long Distance Voice services
Dedicated Internet Access services
IP-VPN
IP PBX
SIP
Ethernet
VoIP
Web Hosting
Web Development
Web Design
Private Line services
Wavelength services
IP Transit
VoIP Origination
VoIP Termination
Collocation services
Managed Services (hardware, voice and data packages)
Wireless Ethernet and Private Line Access
Concentric
In June, 2004, XO Communications, Inc. re-launched the Concentric name as a web hosting and email service for small and medium-sized businesses[1]. The new service based its products on its clustered hosting technology. Barbara Branaman was appointed Vice President and General Manager of Concentric [2].
A co-marketing agreement was signed in July, 2004, with PayPal, an eBay Company, to incorporate [E-commerce|e-commerce] capabilities provided by PayPal into the Concentric Web Builder tool, enabling customers of XO Web Hosting and Concentric hosting services to send and receive payments online[3]. Concentric released its Perimeter Email Protection application in April, 2007, a suite of tools to filter and authenticate incoming email before it reaches the customer's email infrastructure[4]. Hosted Microsoft Exchange was launched in June, 2008, as an additional email option or as a stand-alone product.
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