Contact Global Capacity

To Contact Global Capacity
Call: 1-312-673-2400
Toll Free: 1-866-226-4244 

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

Office Locations:

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

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

Glendale, CO
Galleria Office Towers - South Towers
720 So Colorado Blvd.
Suite 800-S
Glendale, CO 80246

Waltham, MA
265 Winter Street
Waltham, MA 02451

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