Locate these Service Locations on a map >>
| Site Type | Country | City, State | Building Name | Address | ZIP Code |
|---|---|---|---|---|---|
| COB | United States | CHICAGO, IL | AT&T Corporate Center 1 | 227 WEST MONROE STREET | 60606 |
| COB | United States | CHICAGO, IL | 230 W Monroe St | 230 WEST MONROE STREET | 60606 |
| COB | United States | CHICAGO, IL | Two Illinois Center | 233 NORTH MICHIGAN AVENUE | 60601 |
| COB | United States | CHICAGO, IL | Willis Tower | 233 SOUTH WACKER DRIVE | 60606 |
| CNDC | United States | CHICAGO, IL | QTS Datacenter | 2800 S ASHLAND AVE | 60608 |
| COB | United States | CHICAGO, IL | 30 N LaSalle St | 30 NORTH LASALLE STREET | 60602 |
| COB | United States | CHICAGO, IL | 30 S Wacker Dr | 30 SOUTH WACKER DRIVE | 60606 |
| COB | United States | CHICAGO, IL | 300 North LaSalle | 300 NORTH LASALLE | 60654 |
| COB | United States | CHICAGO, IL | Gateway IV | 300 SOUTH RIVERSIDE PLAZA | 60606 |
| COB | United States | CHICAGO, IL | 300 S Wacker Dr | 300 SOUTH WACKER DRIVE | 60606 |
| COB | United States | CHICAGO, IL | Three Illinois Center | 303 EAST WACKER DRIVE | 60601 |
| COB | United States | CHICAGO, IL | 303 W Madison St | 303 WEST MADISON STREET | 60606 |
| COB | United States | CHICAGO, IL | 311 S Wacker Dr | 311 SOUTH WACKER DRIVE | 60606 |
| COB | United States | CHICAGO, IL | 318 W Adams St | 318 WEST ADAMS STREET | 60606 |
| COB | United States | CHICAGO, IL | BMO Tower | 320 S CANAL STREET | 60606 |
| COB | United States | CHICAGO, IL | Riverfront Plaza | 321 NORTH CLARK STREET | 60654 |
| COB | United States | CHICAGO, IL | 33 N Dearborn St | 33 NORTH DEARBORN STREET | 60602 |
| COB | United States | CHICAGO, IL | 33 N LaSalle St | 33 NORTH LASALLE STREET | 60602 |
| COB | United States | CHICAGO, IL | 33 W Monroe St | 33 WEST MONROE STREET | 60603 |
| COB | United States | CHICAGO, IL | One IBM Plaza | 330 NORTH WABASH AVENUE | 60611 |
Legend:
CNDC: Carrier Neutral Data Center
CDC: Cogent Data Center
COB: Corporate Office Building
CDC: Cogent Data Center
COB: Corporate Office Building