2011 Top 100
44: AT&T Corp.
| Top 100 Revenue: | $664,057,000 |
| Defense Revenue: | $238,376,000 |
| Civilian Revenue: | $425,681,000 |
| 2010 Revenue: | $124.3 billion |
| 2010 Earnings: | $19.9 billion |
| 2009 Revenue: | N/A |
| 2009 Earnings: | N/A |
| Number of employees: | 267,000 |
| Headquarters: | Dallas |
| Website: | http://www.att.com |
| Leadership: | Randall L. Stephenson, chairman and CEO Thomas Harvy, senior vice president |
| Ticker: | T |
| Lines of business: | Consumer, small business, enterprise, wholesale and local search |
| Major customers: | State Department, Nuclear Regulatory Commission, Justice Department, Patent and Trademark Office, Health and Human Services Department, Social Security Administration, Internal Revenue Service, Office of Management and Budget, Marine Corps, Joint Commands, Army, Navy, Air Force, National Guard and Reserve Forces |
| Major contracts/projects: | N/A |