Area code 437
Area code 437 holds 549 in-service central-office prefixes in the CNAC register, covering roughly 5,490,000 telephone numbers. They are split between 15 carriers and 1 rate centre. Every one of them serves the Toronto rate centre. Recorded assignments run from January 9, 2013 to June 12, 2026. That ranks it 35 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 437 at a glance
- Province or territory
- Ontario
- Main rate centres
- Toronto
- Local time
- — Eastern Time (ET), UTC−5; UTC−4 in daylight saving time
- In service since
- March 25, 2013
- Split or overlaid from
- 416
- Number format
- 437-NXX-XXXX · +1 437 NXX XXXX
Sources: CNAC, NANPA (September 25, 2026), Statistics Canada.
In numbers
- In-service prefixes
- 549
- Telephone numbers covered
- 5,490,000
- Carriers
- 15
- Rate centres
- 1
- Provinces and territories
- 1
- First assignment
- January 9, 2013
- Most recent assignment
- June 12, 2026
Who holds these numbers
Rogers Communications Canada Inc. (Wireless) holds the largest share at 158 prefixes, 28.8% of the total, ahead of 14 other carriers.
| Carrier | Prefixes | Share | First assigned |
|---|---|---|---|
| Rogers Communications Canada Inc. (Wireless) | 158 | 28.8 % | 2013 |
| Bell Mobility | 136 | 24.8 % | 2020 |
| TELUS Mobility | 61 | 11.1 % | 2013 |
| Iristel Inc. | 58 | 10.6 % | 2013 |
| Fido Solutions Inc. | 47 | 8.6 % | 2016 |
| Videotron Ltd. | 45 | 8.2 % | 2021 |
| TELUS Integrated Communications | 11 | 2.0 % | 2020 |
| Fibernetics Corporation | 10 | 1.8 % | 2013 |
| Zayo Canada Inc. | 8 | 1.5 % | 2013 |
| Rogers Communications Canada Inc. (Cable) | 7 | 1.3 % | 2018 |
| IXICA Communications Inc. | 3 | 0.5 % | 2017 |
| Comwave Networks | 2 | 0.4 % | 2013 |
| Beanfield Technologies Inc. | 1 | 0.2 % | 2013 |
| Distributel | 1 | 0.2 % | 2016 |
| Rogers Communications Canada Inc. | 1 | 0.2 % | 2019 |
How the allocation was built up
| Period | Prefixes | Carriers |
|---|---|---|
| 2010–2014 | 33 | 7 |
| 2015–2019 | 179 | 8 |
| 2020–2024 | 329 | 11 |
| 2025–2029 | 8 | 2 |
Overlay area codes
437 shares its rate centres with 416, 647, 942. 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 437 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
- 137
- Different numbers
- 130
- Different people
- 130
6 verdicts and 2 reports
Scam 83 % (5) · Nuisance 17 % (1) · Safe 0 % (0)
Report types: Scam (1).
| Number | Verdicts | Reports | People checking |
|---|---|---|---|
| 437-255-4685 | 1 nuisance | 1 | 1 |
| 437-800-7782 | 1 scam | 1 | 1 |
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 437 number?
Most verdicts and reports on these numbers describe scam attempts, so treat an unexpected call as a possible scam.
- 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.
- 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 437: questions and answers
Where is area code 437?
437 serves Ontario. Its 549 in-service prefixes belong to 1 rate centres, mainly Toronto.
What time zone is area code 437 in?
Every placed rate centre in 437 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 437 start?
437 has been in service since March 25, 2013; it was created from 416. It shares its territory with 416, 647 and 942, so a new number there can get any of these codes.
Which carriers hold 437 numbers?
The CNAC register lists 15 carriers with prefixes in 437; the largest are Rogers Communications Canada Inc. (Wireless) (28.8%), Bell Mobility (24.8%) and TELUS Mobility (11.1%). Numbers can be ported, so the original carrier may not be the current one.
Are calls from 437 numbers scams?
Visitors have left 6 verdicts on 437 numbers (5 scam, 1 nuisance, 0 safe) and 2 moderated reports. That covers the numbers people looked up, not all of 437: 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 437 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 400 of 549 prefixes, largest rate centres first.
Toronto, ON
437-200 · 437-201 · 437-202 · 437-203 · 437-204 · 437-205 · 437-206 · 437-207 · 437-208 · 437-209 · 437-210 · 437-212 · 437-213 · 437-214 · 437-215 · 437-216 · 437-217 · 437-218 · 437-219 · 437-220 · 437-221 · 437-222 · 437-223 · 437-224 · 437-225 · 437-226 · 437-227 · 437-228 · 437-229 · 437-230 · 437-231 · 437-232 · 437-233 · 437-234 · 437-235 · 437-236 · 437-237 · 437-238 · 437-239 · 437-240 · 437-241 · 437-242 · 437-243 · 437-244 · 437-245 · 437-246 · 437-247 · 437-248 · 437-249 · 437-250 · 437-251 · 437-252 · 437-253 · 437-254 · 437-255 · 437-256 · 437-257 · 437-258 · 437-259 · 437-260 · 437-261 · 437-262 · 437-263 · 437-264 · 437-265 · 437-266 · 437-267 · 437-268 · 437-269 · 437-270 · 437-271 · 437-272 · 437-273 · 437-274 · 437-275 · 437-276 · 437-277 · 437-278 · 437-279 · 437-280 · 437-281 · 437-282 · 437-283 · 437-284 · 437-285 · 437-286 · 437-287 · 437-288 · 437-289 · 437-290 · 437-291 · 437-292 · 437-293 · 437-294 · 437-295 · 437-296 · 437-297 · 437-298 · 437-299 · 437-300 · 437-301 · 437-302 · 437-303 · 437-304 · 437-305 · 437-306 · 437-307 · 437-308 · 437-309 · 437-312 · 437-313 · 437-314 · 437-315 · 437-316 · 437-317 · 437-318 · 437-319 · 437-320 · 437-322 · 437-323 · 437-324 · 437-325 · 437-326 · 437-327 · 437-328 · 437-329 · 437-330 · 437-331 · 437-332 · 437-333 · 437-334 · 437-335 · 437-336 · 437-337 · 437-338 · 437-339 · 437-340 · 437-341 · 437-342 · 437-343 · 437-344 · 437-345 · 437-346 · 437-347 · 437-348 · 437-349 · 437-350 · 437-351 · 437-352 · 437-353 · 437-354 · 437-355 · 437-356 · 437-357 · 437-358 · 437-359 · 437-360 · 437-361 · 437-362 · 437-363 · 437-364 · 437-365 · 437-366 · 437-367 · 437-370 · 437-371 · 437-372 · 437-373 · 437-374 · 437-375 · 437-376 · 437-377 · 437-378 · 437-379 · 437-380 · 437-381 · 437-383 · 437-385 · 437-388 · 437-389 · 437-390 · 437-391 · 437-392 · 437-393 · 437-394 · 437-395 · 437-396 · 437-397 · 437-398 · 437-399 · 437-400 · 437-401 · 437-402 · 437-403 · 437-404 · 437-405 · 437-406 · 437-407 · 437-408 · 437-409 · 437-410 · 437-412 · 437-413 · 437-414 · 437-415 · 437-417 · 437-418 · 437-419 · 437-420 · 437-421 · 437-422 · 437-423 · 437-424 · 437-425 · 437-426 · 437-427 · 437-428 · 437-429 · 437-430 · 437-431 · 437-432 · 437-433 · 437-434 · 437-435 · 437-436 · 437-438 · 437-439 · 437-440 · 437-441 · 437-442 · 437-443 · 437-444 · 437-445 · 437-446 · 437-447 · 437-448 · 437-449 · 437-450 · 437-451 · 437-452 · 437-453 · 437-454 · 437-455 · 437-457 · 437-460 · 437-463 · 437-464 · 437-465 · 437-466 · 437-467 · 437-468 · 437-469 · 437-470 · 437-471 · 437-472 · 437-473 · 437-474 · 437-475 · 437-476 · 437-477 · 437-484 · 437-487 · 437-488 · 437-493 · 437-494 · 437-499 · 437-500 · 437-505 · 437-506 · 437-507 · 437-508 · 437-509 · 437-510 · 437-512 · 437-513 · 437-514 · 437-515 · 437-516 · 437-517 · 437-518 · 437-519 · 437-520 · 437-522 · 437-523 · 437-524 · 437-525 · 437-526 · 437-527 · 437-528 · 437-529 · 437-530 · 437-531 · 437-532 · 437-533 · 437-535 · 437-536 · 437-537 · 437-538 · 437-539 · 437-540 · 437-545 · 437-550 · 437-551 · 437-552 · 437-553 · 437-556 · 437-557 · 437-558 · 437-559 · 437-561 · 437-562 · 437-563 · 437-564 · 437-565 · 437-566 · 437-567 · 437-568 · 437-575 · 437-577 · 437-580 · 437-585 · 437-588 · 437-595 · 437-599 · 437-600 · 437-601 · 437-602 · 437-603 · 437-604 · 437-605 · 437-606 · 437-607 · 437-608 · 437-616 · 437-620 · 437-621 · 437-622 · 437-623 · 437-624 · 437-625 · 437-626 · 437-627 · 437-628 · 437-629 · 437-630 · 437-631 · 437-632 · 437-633 · 437-634 · 437-635 · 437-636 · 437-637 · 437-638 · 437-639 · 437-640 · 437-641 · 437-642 · 437-643 · 437-644 · 437-645 · 437-646 · 437-648 · 437-649 · 437-650 · 437-651 · 437-652 · 437-653 · 437-654 · 437-655 · 437-656 · 437-657 · 437-658 · 437-660 · 437-661 · 437-662 · 437-663 · 437-665 · 437-666 · 437-667 · 437-668 · 437-669 · 437-670 · 437-671 · 437-672 · 437-673 · 437-676 · 437-677 · 437-679 · 437-680 · 437-681 · 437-682 · 437-683 · 437-684 · 437-685 · 437-686 · 437-687 · 437-688 · 437-689 · 437-690 · 437-696
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.