Thank you for your interest in XO Communications
Please refer to the contact information below to reach us.
Product Information & Sales
Business Sales: Request information online »
or call 1-866-349-0134
Carrier & Wholesale Services: Request information online »
or call 1-800-474-1763
Reseller/Partner Sales:
Visit our Partner page or Sign up for the business partner channel
Customer Support
XO Product Support: 1-800-421-3872
Carrier/Wholesales Support: 1-877-792-5550
Hosting Services Support: 1-888-575-6398
Allegiance Product Support: 1-800-553-1989
Reseller/Partner Support: 1-866-269-3472
or visit Channelink »
Headquarters
XO Communications
13865 Sunrise Valley Drive
Herndon, Virginia 20171
