Area code 548
Area code 548 holds 499 in-service central-office prefixes in the CNAC register, covering roughly 4,990,000 telephone numbers. They are split between 21 carriers and 170 rate centres. The largest is London. Recorded assignments run from November 18, 2015 to June 4, 2026. That ranks it 36 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
In numbers
- In-service prefixes
- 499
- Telephone numbers covered
- 4,990,000
- Carriers
- 21
- Rate centres
- 170
- Provinces and territories
- 1
- First assignment
- November 18, 2015
- Most recent assignment
- June 4, 2026
Who holds these numbers
Fibernetics Corporation holds the largest share at 158 prefixes, 31.7% of the total, ahead of 20 other carriers.
| Carrier | Prefixes | Share | First assigned |
|---|---|---|---|
| Fibernetics Corporation | 158 | 31.7 % | 2020 |
| Iristel Inc. | 63 | 12.6 % | 2016 |
| ISP Telecom Inc. | 57 | 11.4 % | 2019 |
| Rogers Communications Canada Inc. (Wireless) | 36 | 7.2 % | 2016 |
| IXICA Communications Inc. | 27 | 5.4 % | 2021 |
| Rogers Communications Canada Inc. (Cable) | 22 | 4.4 % | 2017 |
| Distributel | 21 | 4.2 % | 2018 |
| Videotron Ltd. | 20 | 4.0 % | 2022 |
| Bell Canada | 18 | 3.6 % | 2016 |
| TELUS Integrated Communications | 17 | 3.4 % | 2017 |
| Rogers Communications Canada Inc. | 15 | 3.0 % | 2019 |
| TELUS Mobility | 11 | 2.2 % | 2015 |
| Bragg Communications Inc. | 7 | 1.4 % | 2025 |
| Bell Mobility | 6 | 1.2 % | 2021 |
| Cogeco Connexion Inc. | 6 | 1.2 % | 2024 |
| Fido Solutions Inc. | 4 | 0.8 % | 2018 |
| Quadro Communications Co-operative Inc. | 4 | 0.8 % | 2021 |
| Brooke Telecom Co-operative Ltd. | 2 | 0.4 % | 2021 |
| Gosfield North Communication Co-operative Ltd. | 2 | 0.4 % | 2022 |
| Mornington Communications Co-operative Ltd. | 2 | 0.4 % | 2022 |
| Wightman Communications Ltd. | 1 | 0.2 % | 2021 |
Where these numbers land
Prefixes in 548 serve 170 rate centres. A rate centre is the billing area a prefix is attached to, not where the handset is.
How the allocation was built up
| Period | Prefixes | Carriers |
|---|---|---|
| 2015–2019 | 117 | 10 |
| 2020–2024 | 359 | 18 |
| 2025–2029 | 23 | 7 |
Overlay area codes
548 shares its rate centres with 519, 226, 382, 506, 236, 250, 428, 782, 819, 873, 902, 204. Overlay codes cover the same ground, which is why ten-digit dialling is required: two neighbours on one street can hold different area codes.
Allocated prefixes
Showing 230 of 499 prefixes, largest rate centres first.
London, ON
548-206 · 548-216 · 548-217 · 548-340 · 548-341 · 548-342 · 548-343 · 548-344 · 548-345 · 548-346
Kitchener-Waterloo, ON
548-212 · 548-219 · 548-255 · 548-279 · 548-288 · 548-333 · 548-350 · 548-384 · 548-390 · 548-398
Windsor, ON
548-204 · 548-292 · 548-332 · 548-389 · 548-474 · 548-517 · 548-708 · 548-709 · 548-960 · 548-961
Brantford, ON
548-210 · 548-328 · 548-338 · 548-385 · 548-595 · 548-800 · 548-880 · 548-882 · 548-885 · 548-900
Guelph, ON
548-209 · 548-316 · 548-408 · 548-452 · 548-557 · 548-761 · 548-762 · 548-808 · 548-855 · 548-922
Sarnia, ON
548-203 · 548-386 · 548-454 · 548-466 · 548-504 · 548-581 · 548-582 · 548-591 · 548-897 · 548-995
Listowel, ON
548-325 · 548-327 · 548-355 · 548-405 · 548-550 · 548-551 · 548-552 · 548-553 · 548-556 · 548-828
Leamington, ON
548-324 · 548-334 · 548-515 · 548-564 · 548-700 · 548-784 · 548-875 · 548-918 · 548-919
Mount Forest, ON
548-272 · 548-335 · 548-336 · 548-337 · 548-339 · 548-395 · 548-533 · 548-633 · 548-733
Chatham, ON
548-201 · 548-396 · 548-465 · 548-526 · 548-797 · 548-798 · 548-886 · 548-996
Essex, ON
548-400 · 548-406 · 548-407 · 548-562 · 548-766 · 548-772 · 548-906 · 548-987
Owen Sound, ON
548-208 · 548-295 · 548-434 · 548-505 · 548-506 · 548-646 · 548-877
Simcoe, ON
548-214 · 548-294 · 548-331 · 548-502 · 548-559 · 548-630 · 548-755
Goderich, ON
548-248 · 548-281 · 548-409 · 548-410 · 548-433 · 548-980
Orangeville, ON
548-213 · 548-256 · 548-503 · 548-584 · 548-587 · 548-978
St. Thomas, ON
548-205 · 548-394 · 548-538 · 548-586 · 548-589 · 548-986
Woodstock, ON
548-207 · 548-387 · 548-397 · 548-453 · 548-497 · 548-887
Clinton, ON
548-202 · 548-280 · 548-457 · 548-640 · 548-972
Kingsville, ON
548-500 · 548-513 · 548-563 · 548-778 · 548-857
Pelee Island, ON
548-230 · 548-266 · 548-701 · 548-785 · 548-799
Tavistock, ON
548-223 · 548-549 · 548-655 · 548-686 · 548-848
Tecumseh, ON
548-516 · 548-565 · 548-666 · 548-776 · 548-876
Amherstburg, ON
548-444 · 548-512 · 548-561 · 548-775
Comber, ON
548-257 · 548-299 · 548-583 · 548-783
Elmira, ON
548-227 · 548-402 · 548-580 · 548-872
Emeryville, ON
548-252 · 548-260 · 548-399 · 548-780
Galt, ON
548-218 · 548-477 · 548-558 · 548-956
La Salle, ON
548-253 · 548-263 · 548-514 · 548-777
New Hamburg, ON
548-228 · 548-312 · 548-520 · 548-849
Pleasant Park, ON
548-261 · 548-699 · 548-782 · 548-832
Stratford, ON
548-215 · 548-560 · 548-585 · 548-992
Acton, ON
548-380 · 548-461 · 548-825
Ayr, ON
548-510 · 548-822 · 548-867
Belle River, ON
548-200 · 548-249 · 548-779
Belmont, ON
548-239 · 548-639 · 548-717
Bothwell, ON
548-224 · 548-289 · 548-371
Breslau, ON
548-401 · 548-833 · 548-868
Brigden, ON
548-297 · 548-413 · 548-834
Burford, ON
548-225 · 548-286 · 548-981
Durham, ON
548-254 · 548-290 · 548-291
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.