Area Codes > 740 > Central Office Codes
| Exchange | Rate Center | State | Operating Company |
|---|---|---|---|
| 740-995 | CAMBRIDGE | OH | LEVEL 3 COMMUNICATIONS, LLC - OH |
| 740-996 | STEUBENVL | OH | FIRST COMMUNICATIONS LLC DBA CORECOMM - OH |
| 740-997 | BEALLSVL | OH | FIRST COMMUNICATIONS LLC DBA CORECOMM - OH |
| 740-998 | FRANKFORT | OH | CHILLICOTHE TELEPHONE CO. |
| 740-999 | CORNING | OH | FIRST COMMUNICATIONS LLC DBA CORECOMM - OH |