Area code 905
Area code 905 holds 773 in-service central-office prefixes in the CNAC register, covering roughly 7,730,000 telephone numbers. They are split between 12 carriers and 94 rate centres. The largest is Hamilton. Recorded assignments run from October 13, 1999 to July 2, 2019. That ranks it 19 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 905 at a glance
- Province or territory
- Ontario
- Main rate centres
- Hamilton, Oshawa, St. Catharines-Thorold, Brampton, Cooksville
- Local time
- — Eastern Time (ET), UTC−5; UTC−4 in daylight saving time
- In service since
- October 4, 1993
- Split or overlaid from
- 416
- Number format
- 905-NXX-XXXX · +1 905 NXX XXXX
Sources: CNAC, NANPA (September 25, 2026), Statistics Canada.
In numbers
- In-service prefixes
- 773
- Telephone numbers covered
- 7,730,000
- Carriers
- 12
- Rate centres
- 94
- Provinces and territories
- 1
- First assignment
- October 13, 1999
- Most recent assignment
- July 2, 2019
Who holds these numbers
Bell Canada holds the largest share at 438 prefixes, 56.7% of the total, ahead of 11 other carriers.
| Carrier | Prefixes | Share | First assigned |
|---|---|---|---|
| Bell Canada | 438 | 56.7 % | 1999 |
| Rogers Communications Canada Inc. (Cable) | 125 | 16.2 % | 1999 |
| Bell Mobility | 49 | 6.3 % | 1999 |
| TELUS Mobility | 48 | 6.2 % | 1999 |
| Rogers Communications Canada Inc. (Wireless) | 36 | 4.7 % | 1999 |
| Fido Solutions Inc. | 27 | 3.5 % | 1999 |
| Zayo Canada Inc. | 21 | 2.7 % | 2000 |
| TELUS Integrated Communications | 19 | 2.5 % | 2000 |
| Primus Telecommunications Canada Inc. | 5 | 0.6 % | 2003 |
| Iristel Inc. | 2 | 0.3 % | 2007 |
| Videotron Ltd. | 2 | 0.3 % | 2018 |
| InnSysVoice Corp | 1 | 0.1 % | 2019 |
Where these numbers land
Prefixes in 905 serve 94 rate centres. A rate centre is the billing area a prefix is attached to, not where the handset is.
| Rate centre | Province | Prefixes | Carriers |
|---|---|---|---|
| Hamilton | ON | 95 | 11 |
| Oshawa | ON | 49 | 9 |
| St. Catharines-Thorold | ON | 49 | 8 |
| Brampton | ON | 48 | 8 |
| Cooksville | ON | 48 | 6 |
| Oakville | ON | 34 | 7 |
| Streetsville | ON | 34 | 5 |
| Thornhill | ON | 28 | 5 |
| Unionville | ON | 28 | 5 |
| Malton | ON | 26 | 5 |
| Burlington | ON | 23 | 5 |
| Ajax-Pickering | ON | 22 | 5 |
| Newmarket | ON | 21 | 6 |
| Milton | ON | 14 | 6 |
| Aurora | ON | 12 | 3 |
| Richmond Hill | ON | 12 | 3 |
| Markham | ON | 11 | 3 |
| Niagara Falls | ON | 11 | 1 |
| South Pickering | ON | 9 | 2 |
| Woodbridge | ON | 9 | 2 |
| Clarkson | ON | 8 | 2 |
| Cobourg | ON | 8 | 3 |
| Welland | ON | 8 | 2 |
| Whitby | ON | 8 | 2 |
| Oak Ridges | ON | 7 | 3 |
| Port Credit | ON | 7 | 2 |
| Caledon East | ON | 6 | 4 |
| Maple | ON | 6 | 2 |
| Beeton | ON | 5 | 4 |
| Castlemore | ON | 5 | 2 |
| Fort Erie | ON | 5 | 1 |
| Gormley | ON | 5 | 2 |
| Keswick | ON | 5 | 2 |
| Georgetown | ON | 4 | 2 |
| Stoney Creek | ON | 4 | 3 |
| Bolton | ON | 3 | 2 |
| Bowmanville | ON | 3 | 2 |
| Bradford | ON | 3 | 2 |
| Brooklin | ON | 3 | 2 |
| Claremont | ON | 3 | 3 |
| Dunnville | ON | 3 | 1 |
| Stouffville | ON | 3 | 2 |
| Uxbridge | ON | 3 | 2 |
| Ancaster | ON | 2 | 1 |
| Bethesda | ON | 2 | 2 |
| Dundas | ON | 2 | 1 |
| Grimsby | ON | 2 | 1 |
| Hampton | ON | 2 | 2 |
| King City | ON | 2 | 2 |
| Kleinburg | ON | 2 | 2 |
| Mount Albert | ON | 2 | 2 |
| Newcastle | ON | 2 | 2 |
| Niagara-On-The-Lake | ON | 2 | 2 |
| Nobleton | ON | 2 | 2 |
| Orono | ON | 2 | 2 |
| Palgrave | ON | 2 | 2 |
| Port Colborne | ON | 2 | 1 |
| Port Hope | ON | 2 | 2 |
| Port Perry | ON | 2 | 1 |
| Queensville | ON | 2 | 2 |
| Schomberg | ON | 2 | 2 |
| Snelgrove | ON | 2 | 2 |
| Sutton | ON | 2 | 2 |
| Tottenham | ON | 2 | 2 |
| Victoria | ON | 2 | 2 |
| Waterdown | ON | 2 | 1 |
| Beamsville | ON | 1 | 1 |
| Binbrook | ON | 1 | 1 |
| Blackstock | ON | 1 | 1 |
| Caledonia | ON | 1 | 1 |
| Campbellville | ON | 1 | 1 |
| Castleton | ON | 1 | 1 |
| Cayuga | ON | 1 | 1 |
| Colborne | ON | 1 | 1 |
| Cold Springs | ON | 1 | 1 |
| Fisherville | ON | 1 | 1 |
| Freelton | ON | 1 | 1 |
| Garden Hill | ON | 1 | 1 |
| Grafton | ON | 1 | 1 |
| Hagersville | ON | 1 | 1 |
How the allocation was built up
| Period | Prefixes | Carriers |
|---|---|---|
| 1995–1999 | 12 | 6 |
| 2000–2004 | 214 | 9 |
| 2005–2009 | 48 | 8 |
| 2015–2019 | 4 | 3 |
495 undated in the register.
Overlay area codes
905 shares its rate centres with 365, 289, 742. 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 905 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
- 173
- Different numbers
- 169
- Different people
- 155
5 verdicts and 1 report
Scam 60 % (3) · Nuisance 20 % (1) · Safe 20 % (1)
Report types: Telemarketing (1).
| Number | Verdicts | Reports | People checking |
|---|---|---|---|
| 905-450-5627 | 1 scam | 1 | 1 |
| 905-576-4426 | 1 scam | — | 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 905 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 905: questions and answers
Where is area code 905?
905 serves Ontario. Its 773 in-service prefixes belong to 94 rate centres, mainly Hamilton, Oshawa, St. Catharines-Thorold and Brampton.
What time zone is area code 905 in?
Every placed rate centre in 905 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 905 start?
905 has been in service since October 4, 1993; it was created from 416. It shares its territory with 289, 365 and 742, so a new number there can get any of these codes.
Which carriers hold 905 numbers?
The CNAC register lists 12 carriers with prefixes in 905; the largest are Bell Canada (56.7%), Rogers Communications Canada Inc. (Cable) (16.2%) and Bell Mobility (6.3%). Numbers can be ported, so the original carrier may not be the current one.
Are calls from 905 numbers scams?
Visitors have left 5 verdicts on 905 numbers (3 scam, 1 nuisance, 1 safe) and 1 moderated reports. That covers the numbers people looked up, not all of 905: 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 905 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 304 of 773 prefixes, largest rate centres first.
Hamilton, ON
905-218 · 905-253 · 905-296 · 905-297 · 905-308 · 905-312 · 905-314 · 905-317 · 905-318 · 905-379
Oshawa, ON
905-213 · 905-215 · 905-233 · 905-240 · 905-242 · 905-243 · 905-244 · 905-245 · 905-259 · 905-260
St. Catharines-Thorold, ON
905-225 · 905-227 · 905-228 · 905-246 · 905-280 · 905-321 · 905-322 · 905-323 · 905-324 · 905-325
Brampton, ON
905-216 · 905-226 · 905-230 · 905-291 · 905-450 · 905-451 · 905-452 · 905-453 · 905-454 · 905-455
Cooksville, ON
905-206 · 905-210 · 905-212 · 905-214 · 905-219 · 905-232 · 905-238 · 905-241 · 905-247 · 905-267
Oakville, ON
905-208 · 905-257 · 905-287 · 905-330 · 905-334 · 905-337 · 905-338 · 905-339 · 905-399 · 905-464
Streetsville, ON
905-236 · 905-285 · 905-286 · 905-288 · 905-301 · 905-302 · 905-363 · 905-369 · 905-412 · 905-542
Thornhill, ON
905-326 · 905-370 · 905-418 · 905-482 · 905-530 · 905-532 · 905-597 · 905-660 · 905-669 · 905-695
Unionville, ON
905-248 · 905-258 · 905-300 · 905-305 · 905-307 · 905-316 · 905-413 · 905-415 · 905-470 · 905-474
Malton, ON
905-234 · 905-255 · 905-256 · 905-293 · 905-298 · 905-362 · 905-364 · 905-405 · 905-461 · 905-564
Burlington, ON
905-220 · 905-315 · 905-319 · 905-320 · 905-331 · 905-332 · 905-333 · 905-335 · 905-336 · 905-340
Ajax-Pickering, ON
905-231 · 905-239 · 905-391 · 905-409 · 905-423 · 905-424 · 905-426 · 905-427 · 905-428 · 905-550
Newmarket, ON
905-235 · 905-251 · 905-252 · 905-392 · 905-657 · 905-710 · 905-715 · 905-716 · 905-806 · 905-830
Milton, ON
905-203 · 905-299 · 905-462 · 905-514 · 905-636 · 905-691 · 905-693 · 905-699 · 905-749 · 905-805
Aurora, ON
905-222 · 905-395 · 905-503 · 905-713 · 905-717 · 905-726 · 905-727 · 905-750 · 905-751 · 905-758
Richmond Hill, ON
905-224 · 905-237 · 905-292 · 905-508 · 905-737 · 905-770 · 905-780 · 905-784 · 905-787 · 905-883
Markham, ON
905-201 · 905-202 · 905-205 · 905-209 · 905-294 · 905-350 · 905-368 · 905-471 · 905-472 · 905-554
Niagara Falls, ON
905-262 · 905-295 · 905-351 · 905-353 · 905-354 · 905-356 · 905-357 · 905-358 · 905-371 · 905-374
South Pickering, ON
905-250 · 905-420 · 905-421 · 905-422 · 905-492 · 905-509 · 905-831 · 905-837 · 905-839
Woodbridge, ON
905-264 · 905-265 · 905-266 · 905-605 · 905-652 · 905-663 · 905-850 · 905-851 · 905-856
Clarkson, ON
905-254 · 905-403 · 905-491 · 905-822 · 905-823 · 905-855 · 905-916 · 905-919
Cobourg, ON
905-207 · 905-269 · 905-372 · 905-373 · 905-375 · 905-376 · 905-377 · 905-396
Welland, ON
905-414 · 905-714 · 905-732 · 905-733 · 905-734 · 905-735 · 905-736 · 905-788
Whitby, ON
905-217 · 905-430 · 905-444 · 905-493 · 905-556 · 905-665 · 905-666 · 905-668
Oak Ridges, ON
905-223 · 905-313 · 905-398 · 905-505 · 905-506 · 905-559 · 905-773
Port Credit, ON
905-221 · 905-271 · 905-274 · 905-278 · 905-486 · 905-891 · 905-990
Caledon East, ON
905-584 · 905-586 · 905-587 · 905-588 · 905-757 · 905-860
Maple, ON
905-303 · 905-417 · 905-553 · 905-585 · 905-653 · 905-832
Beeton, ON
905-724 · 905-729 · 905-748 · 905-801 · 905-909
Castlemore, ON
905-200 · 905-204 · 905-794 · 905-913 · 905-915
Fort Erie, ON
905-871 · 905-991 · 905-992 · 905-993 · 905-994
Gormley, ON
905-284 · 905-400 · 905-534 · 905-887 · 905-927
Keswick, ON
905-476 · 905-535 · 905-656 · 905-700 · 905-989
Georgetown, ON
905-702 · 905-703 · 905-873 · 905-877
Stoney Creek, ON
905-594 · 905-662 · 905-664 · 905-930
Bolton, ON
905-533 · 905-857 · 905-951
Bowmanville, ON
905-419 · 905-623 · 905-697
Bradford, ON
905-551 · 905-775 · 905-778
Brooklin, ON
905-425 · 905-620 · 905-655
Claremont, ON
905-408 · 905-490 · 905-649
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.