Contact Information

If you would like to contact GTT, please complete the inquiry form below and we will be back in touch with your shortly. Or, if you prefer you can contact one of our offices directly.

Global Network Operations Center (NOC)  Information

If you are experiencing service issues, please contact our Global NOC Service Desk at one of the phone numbers below, or send an email to: inoc@gtt.net.

  • Americas: +1.877.385.5252, +1.866.250.3887
  • EMEA: +44 (0)20 7489 4200​

 

For billing inquires, please call the phone number listed on your invoice or send an email to billing@gtt.net.  

 

GTT Worldwide Offices

North America

Washington, D.C. (Headquarters)
+1 703 442 5500

New York, NY
+1 201 623 2444

Denver, CO
+1 303 551 0208

Chicago, IL
+1 773 896 9020

 

Europe

London, England
+44 (0)20 7489 7200

Frankfurt, Germany
+49 610 2823 5400

Milan, Italy
+39 029 280 0200

Cagliari, Italy
+39 070 460 0700

Belfast, Northern Ireland
+44 (0)20 7029 4850

 

Asia

Hong Kong
+852 3180 9360