| District of Ontario area codes: 343 | |
|---|---|
| Country | Canada |
| State/Province | Ontario |
| Major City | Kananaskis |
| Time Zone | Eastern |
| Prefix | County | Primary City | Company |
|---|---|---|---|
| 343-356 | Cornwall, ON | Telus Integrated Communications | |
| 343-357 | Bancroft, ON | Telus Integrated Communications | |
| 343-358 | Kingston, ON | Telus Integrated Communications | |
| 343-359 | Kananaskis, ON | Telus Integrated Communications | |
| 343-360 | Ottawa, ON | Telus Integrated Communications | |
| 343-361 | Renfrew, ON | Telus Integrated Communications | |
| 343-362 | Belleville, ON | Telus Integrated Communications | |
| 343-363 | Kingston, ON | Telus Mobility | |
| 343-364 | Kingston, ON | Telus Mobility | |
| 343-369 | Pembroke, ON | Telus Mobility | |
| 343-370 | Cornwall, ON | Telus Mobility | |
| 343-400 | Perth, ON | Rogers Communications Partnership (wireless) | |
| 343-477 | Kingston, ON | Isp Telecom | |
| 343-478 | Napanee, ON | Isp Telecom | |
| 343-479 | Gananoque, ON | Isp Telecom | |
| 343-600 | Belleville, ON | Iristel Inc. | |
| 343-688 | Ottawa, ON | Comwave Networks | |
| 343-689 | Orleans, ON | Comwave Networks | |
| 343-690 | Kananaskis, ON | Comwave Networks | |
| 343-700 | Ottawa, ON | Iristel Inc. |
There are 50 prefixes, In the code area, the major cities are Kananaskis, ON;Renfrew, ON;Ottawa, ON;Pembroke, ON. The major city is Kananaskis.