| District of Ontario area codes: 343 | |
|---|---|
| Country | Canada |
| State/Province | Ontario |
| Major City | Kananaskis |
| Time Zone | Eastern |
| Prefix | County | Primary City | Company |
|---|---|---|---|
| 343-203 | Ottawa, ON | Bell Canada | |
| 343-212 | Jockvale, ON | Telus Integrated Communications | |
| 343-221 | Orleans, ON | Rogers Communications Partnership (cable) | |
| 343-263 | Belleville, ON | Telus Mobility | |
| 343-264 | Brockville, ON | Telus Mobility | |
| 343-265 | Deseronto, ON | Comwave Networks | |
| 343-266 | Kingston, ON | Comwave Networks | |
| 343-267 | Napanee, ON | Comwave Networks | |
| 343-268 | Arden, ON | Comwave Networks | |
| 343-269 | Bancroft, ON | Comwave Networks | |
| 343-270 | Belleville, ON | Comwave Networks | |
| 343-271 | Brighton, ON | Comwave Networks | |
| 343-272 | Northbrook, ON | Comwave Networks | |
| 343-273 | Plevna, ON | Comwave Networks | |
| 343-290 | Kingston, ON | Allstream Inc. | |
| 343-291 | Ottawa, ON | Allstream Inc. | |
| 343-300 | Brockville, ON | Iristel Inc. | |
| 343-333 | Kingston, ON | Globalive Wireless Management Corp. | |
| 343-344 | Kingston, ON | Distributel | |
| 343-355 | Belleville, ON | Telus Integrated Communications |
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.