Contact Global Capacity

To Contact Global Capacity 
Toll Free: 1-866-226-4244  
E-mail: [email protected]

For Business Services 
Call: 1-800-457-4831

Support Contacts:

If you are a Global Capacity One Marketplace Customer
For Technical Support
Call: 1-866-469-5667
E-mail [email protected]

If you are a MP Wholesale customer transitioning to Global Capacity
For Customer Service (Provisioning / Repair)
Call: 1-888-462-6823
For Advanced Service Support (Ethernet)
Call: 1-866-203-0436
For T1 Support
Call: 1-866-347-2422
For Billing questions
[email protected]

If you are a Business customer transitioning to Global Capacity
For technical support
Call: 1-800-457-4831 x2
For Billing questions
Call: 1-800-457-4831 x4


Office Locations:

265 Winter Street
Waltham, MA 02451

Additional Locations:
180 North LaSalle Street, Suite 2430
Chicago, IL 60601

2510 Zanker Road
San Jose, CA 95131

7600 East Orchard Road, Suite 270N
Greenwood Village, CO 80111

International Locations:
United Kingdom

Tomorrow, Suite 1.02

MediaCityUK, Salford
M50 2AB