Area code 343
Area code 343 holds 641 in-service central-office prefixes in the CNAC register, covering roughly 6,410,000 telephone numbers. They are split between 26 carriers and 116 rate centres. The largest is Ottawa-Hull. Recorded assignments run from November 20, 2009 to April 17, 2026. That ranks it 30 of 55 Canadian area codes by prefix count.
Background reading: Caller ID spoofing, STIR/SHAKEN, and how to actually block calls in Canada · Canadian area codes, overlays, and what a 416 number actually tells you · One-ring scams and the Caribbean area codes that look Canadian
Area code 343 at a glance
- Province or territory
- Ontario
- Main rate centres
- Ottawa-Hull, Kingston, Cornwall, Belleville, Brockville
- Local time
- — Eastern Time (ET), UTC−5; UTC−4 in daylight saving time
- In service since
- May 17, 2010
- Split or overlaid from
- 613
- Number format
- 343-NXX-XXXX · +1 343 NXX XXXX
Sources: CNAC, NANPA (September 25, 2026), Statistics Canada.
In numbers
- In-service prefixes
- 641
- Telephone numbers covered
- 6,410,000
- Carriers
- 26
- Rate centres
- 116
- Provinces and territories
- 2
- First assignment
- November 20, 2009
- Most recent assignment
- April 17, 2026
Who holds these numbers
Fibernetics Corporation holds the largest share at 92 prefixes, 14.4% of the total, ahead of 25 other carriers.
| Carrier | Prefixes | Share | First assigned |
|---|---|---|---|
| Fibernetics Corporation | 92 | 14.4 % | 2009 |
| TELUS Integrated Communications | 83 | 12.9 % | 2010 |
| Iristel Inc. | 67 | 10.5 % | 2013 |
| Distributel | 65 | 10.1 % | 2013 |
| TekSavvy Solutions Inc | 53 | 8.3 % | 2015 |
| ISP Telecom Inc. | 41 | 6.4 % | 2012 |
| InnSysVoice Corp | 33 | 5.1 % | 2015 |
| Bell Mobility | 28 | 4.4 % | 2014 |
| Videotron Ltd. | 28 | 4.4 % | 2011 |
| Bell Canada | 22 | 3.4 % | 2013 |
| Nexicom Telecommunications Inc | 22 | 3.4 % | 2018 |
| Comwave Networks | 16 | 2.5 % | 2013 |
| IXICA Communications Inc. | 16 | 2.5 % | 2018 |
| TELUS Mobility | 15 | 2.3 % | 2010 |
| Rogers Communications Canada Inc. (Wireless) | 13 | 2.0 % | 2012 |
| Zayo Canada Inc. | 13 | 2.0 % | 2012 |
| Cogeco Connexion Inc. | 10 | 1.6 % | 2023 |
| Fido Solutions Inc. | 6 | 0.9 % | 2013 |
| Rogers Communications Canada Inc. (Cable) | 6 | 0.9 % | 2013 |
| ExaTEL Inc. | 3 | 0.5 % | 2016 |
| Westport Telephone Company Limited | 3 | 0.5 % | 2020 |
| Primus Telecommunications Canada Inc. | 2 | 0.3 % | 2016 |
| Bragg Communications Inc. | 1 | 0.2 % | 2015 |
| NRTC Communications | 1 | 0.2 % | 2021 |
| Rogers Communications Canada Inc. | 1 | 0.2 % | 2019 |
| Roxborough Telephone Company Ltd. | 1 | 0.2 % | 2013 |
Where these numbers land
Prefixes in 343 serve 116 rate centres. A rate centre is the billing area a prefix is attached to, not where the handset is.
| Rate centre | Province | Prefixes | Carriers |
|---|---|---|---|
| Ottawa-Hull | ON | 104 | 18 |
| Kingston | ON | 23 | 15 |
| Cornwall | ON | 22 | 14 |
| Belleville | ON | 19 | 14 |
| Brockville | ON | 17 | 11 |
| Bancroft | ON | 13 | 9 |
| Kanata-Stittsville | ON | 12 | 10 |
| Jockvale | ON | 10 | 6 |
| Merrickville | ON | 10 | 7 |
| Carleton Place | ON | 9 | 6 |
| Smiths Falls | ON | 9 | 6 |
| Hawkesbury | ON | 8 | 5 |
| Orleans | ON | 8 | 7 |
| Vankleek Hill | ON | 8 | 6 |
| Alfred | ON | 7 | 7 |
| Rockland | ON | 7 | 7 |
| Tweed | ON | 7 | 6 |
| Arnprior | ON | 6 | 5 |
| Bloomfield | ON | 6 | 6 |
| Brighton | ON | 6 | 6 |
| Casselman | ON | 6 | 6 |
| Frankford | ON | 6 | 6 |
| Napanee | ON | 6 | 6 |
| Northbrook | ON | 6 | 6 |
| Pakenham | ON | 6 | 5 |
| Pembroke | ON | 6 | 5 |
| Picton | ON | 6 | 6 |
| Richmond | ON | 6 | 6 |
| Wellington | ON | 6 | 6 |
| Almonte | ON | 5 | 5 |
| Arden | ON | 5 | 5 |
| Carp | ON | 5 | 5 |
| Chesterville | ON | 5 | 5 |
| Clarence Creek | ON | 5 | 5 |
| Cumberland | ON | 5 | 5 |
| Deseronto | ON | 5 | 5 |
| Embrun | ON | 5 | 5 |
| Gloucester | ON | 5 | 5 |
| Kemptville | ON | 5 | 5 |
| Madoc | ON | 5 | 5 |
| Marmora | ON | 5 | 5 |
| Maynooth | ON | 5 | 5 |
| Morrisburg | ON | 5 | 5 |
| Perth | ON | 5 | 2 |
| Plevna | ON | 5 | 5 |
| Russell | ON | 5 | 5 |
| Stirling | ON | 5 | 5 |
| Trenton | ON | 5 | 5 |
| Winchester | ON | 5 | 5 |
| Alexandria | ON | 4 | 4 |
| Bath | ON | 4 | 4 |
| Bourget | ON | 4 | 4 |
| Cardiff | ON | 4 | 4 |
| Coe Hill | ON | 4 | 4 |
| Constance Bay | ON | 4 | 4 |
| Crysler | ON | 4 | 4 |
| Denbigh | ON | 4 | 4 |
| Gananoque | ON | 4 | 4 |
| Iroquois | ON | 4 | 4 |
| Manotick | ON | 4 | 4 |
| Metcalfe | ON | 4 | 4 |
| Navan | ON | 4 | 4 |
| Odessa | ON | 4 | 4 |
| Plantagenet | ON | 4 | 4 |
| Seeleys Bay | ON | 4 | 4 |
| South Mountain | ON | 4 | 4 |
| Wooler | ON | 4 | 4 |
| Adolphustown | ON | 3 | 3 |
| Delta | ON | 3 | 3 |
| Enterprise | ON | 3 | 3 |
| Gilmour | ON | 3 | 3 |
| Harrowsmith | ON | 3 | 3 |
| Ingleside | ON | 3 | 3 |
| Inverary | ON | 3 | 3 |
| L'Orignal | ON | 3 | 3 |
| Lancaster | ON | 3 | 3 |
| Maxville | ON | 3 | 3 |
| North Gower | ON | 3 | 3 |
| Osgoode | ON | 3 | 3 |
| Selby | ON | 3 | 3 |
How the allocation was built up
| Period | Prefixes | Carriers |
|---|---|---|
| 2005–2009 | 1 | 1 |
| 2010–2014 | 66 | 15 |
| 2015–2019 | 327 | 21 |
| 2020–2024 | 218 | 15 |
| 2025–2029 | 29 | 7 |
Overlay area codes
343 shares its rate centres with 613, 753. Overlay codes cover the same ground, which is why ten-digit dialling is required: two neighbours on one street can hold different area codes.
What people check and report about 343 numbers
Searches typed into this site's lookup form since July 28, 2026, plus the verdicts and moderated reports visitors left. A search usually follows a missed call.
- Checks
- 39
- Different numbers
- 36
- Different people
- 35
1 verdict and 0 reports
0 scam, 1 nuisance, 0 safe. Too few to show shares yet.
Phone and text fraud in Ontario
In 2024 the Canadian Anti-Fraud Centre received 5,002 fraud reports from Ontario where the first contact was a phone call (3,655) or a text (1,347); 2,814 came from victims, who reported $37.1 million lost. The most common types were service, phishing, bank investigator.
January to September 2025: 2,830 reports (-24% on the same months of 2024) and $43.3 million reported lost (+66%).
Source: Canadian Anti-Fraud Centre open data (Open Government Licence – Canada), current to September 29, 2025. These are province-wide figures, not specific to one area code, and only a fraction of fraud is ever reported. Dataset
Had a call from a 343 number?
No clear pattern in reports on these numbers yet. If a call worried you:
- Call back on a number you trust
If a caller says they are your bank, the Canada Revenue Agency, a courier or your phone company, hang up and call the organization on the number from its website or your statement, never the number that called you. Caller ID can be faked.
- Report the fraud
Report the call or text to the Canadian Anti-Fraud Centre online or at 1-888-495-8501. If you lost money or gave out personal details, tell your bank first, then your local police.
- Register on the National Do Not Call List
Registering a landline or mobile on the National DNCL is free. Registered charities, political parties, newspapers and companies you already do business with may still call.
- Forward suspicious texts to 7726
Forward a scam or spam text to 7726 (SPAM on the keypad). It's free, and your carrier uses it to block the sender. Don't tap links or reply.
Area code 343: questions and answers
Where is area code 343?
343 serves Ontario. Its 641 in-service prefixes belong to 116 rate centres, mainly Ottawa-Hull, Kingston, Cornwall and Belleville.
What time zone is area code 343 in?
Every placed rate centre in 343 is on Eastern Time (ET, UTC−5), with daylight saving time (UTC−4) from the second Sunday in March to the first Sunday in November.
When did area code 343 start?
343 has been in service since May 17, 2010; it was created from 613. It shares its territory with 613 and 753, so a new number there can get any of these codes.
Which carriers hold 343 numbers?
The CNAC register lists 26 carriers with prefixes in 343; the largest are Fibernetics Corporation (14.4%), TELUS Integrated Communications (12.9%) and Iristel Inc. (10.5%). Numbers can be ported, so the original carrier may not be the current one.
Are calls from 343 numbers scams?
Visitors have left 1 verdicts on 343 numbers (0 scam, 1 nuisance, 0 safe) and 0 moderated reports. That covers the numbers people looked up, not all of 343: most belong to ordinary households and businesses, and scammers can display a local number.
Is phone fraud rising in Ontario?
In the Canadian Anti-Fraud Centre's open data, call and text fraud reports from Ontario went from 3,744 in January–September 2024 to 2,830 in the same months of 2025 (-24%). Reported losses went from $26.1 million to $43.3 million.
How do I report a scam call from a 343 number?
Report it to the Canadian Anti-Fraud Centre (1-888-495-8501). If you lost money, call your bank first, then your local police. Unwanted telemarketing goes to the National Do Not Call List, and spam texts can be forwarded to 7726.
Allocated prefixes
Showing 280 of 641 prefixes, largest rate centres first.
Ottawa-Hull, ON
343-202 · 343-203 · 343-204 · 343-209 · 343-224 · 343-227 · 343-244 · 343-254 · 343-262 · 343-291
Kingston, ON
343-266 · 343-290 · 343-293 · 343-302 · 343-305 · 343-306 · 343-323 · 343-333 · 343-344 · 343-358
Cornwall, ON
343-288 · 343-301 · 343-309 · 343-314 · 343-316 · 343-319 · 343-330 · 343-356 · 343-370 · 343-431
Belleville, ON
343-261 · 343-263 · 343-270 · 343-355 · 343-362 · 343-367 · 343-403 · 343-453 · 343-459 · 343-461
Brockville, ON
343-225 · 343-260 · 343-264 · 343-300 · 343-307 · 343-320 · 343-327 · 343-480 · 343-501 · 343-504
Bancroft, ON
343-269 · 343-357 · 343-401 · 343-404 · 343-476 · 343-709 · 343-720 · 343-755 · 343-943 · 343-944
Kanata-Stittsville, ON
343-308 · 343-326 · 343-353 · 343-359 · 343-386 · 343-490 · 343-499 · 343-545 · 343-667 · 343-690
Jockvale, ON
343-212 · 343-303 · 343-312 · 343-313 · 343-385 · 343-465 · 343-513 · 343-547 · 343-618 · 343-772
Merrickville, ON
343-257 · 343-337 · 343-338 · 343-339 · 343-340 · 343-389 · 343-485 · 343-527 · 343-896 · 343-901
Carleton Place, ON
343-213 · 343-285 · 343-296 · 343-375 · 343-429 · 343-430 · 343-503 · 343-763 · 343-899
Smiths Falls, ON
343-509 · 343-564 · 343-608 · 343-654 · 343-800 · 343-801 · 343-802 · 343-881 · 343-903
Hawkesbury, ON
343-215 · 343-470 · 343-500 · 343-512 · 343-514 · 343-518 · 343-606 · 343-695
Orleans, ON
343-221 · 343-350 · 343-393 · 343-489 · 343-528 · 343-689 · 343-780 · 343-880
Vankleek Hill, ON
343-304 · 343-331 · 343-342 · 343-448 · 343-473 · 343-748 · 343-842 · 343-886
Alfred, ON
343-201 · 343-298 · 343-371 · 343-454 · 343-520 · 343-691 · 343-789
Rockland, ON
343-200 · 343-398 · 343-412 · 343-458 · 343-495 · 343-531 · 343-785
Tweed, ON
343-234 · 343-426 · 343-471 · 343-642 · 343-731 · 343-743 · 343-797
Arnprior, ON
343-347 · 343-373 · 343-515 · 343-566 · 343-761 · 343-973
Bloomfield, ON
343-407 · 343-560 · 343-713 · 343-744 · 343-752 · 343-857
Brighton, ON
343-271 · 343-315 · 343-408 · 343-714 · 343-734 · 343-933
Casselman, ON
343-377 · 343-523 · 343-563 · 343-765 · 343-891 · 343-895
Frankford, ON
343-255 · 343-413 · 343-638 · 343-718 · 343-735 · 343-751
Napanee, ON
343-267 · 343-276 · 343-295 · 343-478 · 343-662 · 343-893
Northbrook, ON
343-232 · 343-272 · 343-419 · 343-724 · 343-739 · 343-863
Pakenham, ON
343-258 · 343-318 · 343-395 · 343-493 · 343-537 · 343-798
Pembroke, ON
343-369 · 343-544 · 343-567 · 343-609 · 343-614 · 343-620
Picton, ON
343-222 · 343-420 · 343-562 · 343-687 · 343-725 · 343-740
Richmond, ON
343-351 · 343-397 · 343-494 · 343-530 · 343-784 · 343-902
Wellington, ON
343-427 · 343-677 · 343-732 · 343-745 · 343-749 · 343-865
Almonte, ON
343-372 · 343-464 · 343-521 · 343-760 · 343-890
Arden, ON
343-268 · 343-406 · 343-559 · 343-712 · 343-856
Carp, ON
343-240 · 343-376 · 343-491 · 343-516 · 343-764
Chesterville, ON
343-378 · 343-524 · 343-629 · 343-647 · 343-766
Clarence Creek, ON
343-210 · 343-379 · 343-455 · 343-533 · 343-767
Cumberland, ON
343-299 · 343-348 · 343-382 · 343-535 · 343-769
Deseronto, ON
343-265 · 343-287 · 343-510 · 343-582 · 343-822
Embrun, ON
343-383 · 343-456 · 343-525 · 343-759 · 343-770
Gloucester, ON
343-349 · 343-384 · 343-526 · 343-546 · 343-771
Kemptville, ON
343-334 · 343-387 · 343-519 · 343-774 · 343-877
Madoc, ON
343-229 · 343-414 · 343-472 · 343-721 · 343-736
Allocation source: Canadian Numbering Administrator (CNAC), the registry that records which carrier a central-office code was originally issued to. An allocation says who was issued the prefix, not who serves the number today: numbers can be ported between carriers, and caller ID can be spoofed outright.