Contact Global Capacity

To Contact Global Capacity 
Toll Free: 1-866-226-4244  

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

Office Locations:

Waltham, MA, Headquarters
265 Winter Street
Waltham, MA 02451

Chicago, IL
180 North LaSalle Street, Suite 2430
Chicago, IL 60601

San Jose, CA
2510 Zanker Road
San Jose, CA 95131

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

Austin, TX
3415 Greystone Drive, Suite 300
Austin, TX 78731

Manchester, UK
T2 Quay Plaza The Quays,
Salford, M50 3BA U.K.
+44 161 278 2585

Support Contacts:

If you are a Global Capacity One Marketplace Customer
For Technical Support
Call: 1-866-469-5667

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

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