The Area Codes of United States of America:
| City/Town or Region | Area code | |
|---|---|---|
| 1. | Ohio | 614 (+1 614) |
| 2. | Ohio | 567 (+1 567) |
| 3. | Ohio | 513 (+1 513) |
| 4. | Ohio | 380 (+1 380) |
| 5. | Ohio | 330 (+1 330) |
| 6. | Ohio | 937 (+1 937) |
| 7. | Ohio | 740 (+1 740) |
| 8. | Ohio | 234 (+1 234) |
| 9. | Ohio | 220 (+1 220) |
| 10. | Ohio | 216 (+1 216) |
| 11. | Ohio | 440 (+1 440) |
| 12. | Ohio | 419 (+1 419) |
| 13. | Oklahoma | 405 (+1 405) |
| 14. | Oklahoma | 539 (+1 539) |
| 15. | Oklahoma | 580 (+1 580) |
| 16. | Oklahoma | 918 (+1 918) |
| 17. | Oregon | 541 (+1 541) |
| 18. | Oregon | 971 (+1 971) |
| 19. | Oregon | 503 (+1 503) |
| 20. | Oregon | 458 (+1 458) |