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General inquiries
US and Canada
800 921 1144
LOCAL
410 694 5700
 
 
Sales inquiries
US and Canada
800 207 3714
INT
+44-20-7012-5555
 
 
Customers at a glance
  • World's largest defense network
  • Two-thirds of the world's 25 largest telco service providers
  • Worlds largest mesh network
  • Providing broadband access to all major U.S. ILECs
  • Global 2000 enterprises in finance, retail and healthcare
  • Federal, state and local government agencies
  • Research and education institutions and consortia