Area code 289

Area code 289 holds 772 in-service central-office prefixes in the CNAC register, covering roughly 7,720,000 telephone numbers. They are split between 20 carriers and 87 rate centres. The largest is Hamilton. Recorded assignments run from January 15, 2001 to May 12, 2022. That ranks it 20 of 55 Canadian area codes by prefix count.

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In numbers

In-service prefixes
772
Telephone numbers covered
7,720,000
Carriers
20
Rate centres
87
Provinces and territories
1
First assignment
January 15, 2001
Most recent assignment
May 12, 2022

Who holds these numbers

TELUS Integrated Communications holds the largest share at 91 prefixes, 11.8% of the total, ahead of 19 other carriers.

CarrierPrefixesShareFirst assigned
TELUS Integrated Communications9111.8 %2002
Fibernetics Corporation8911.5 %2006
Iristel Inc.719.2 %2007
Rogers Communications Canada Inc. (Wireless)678.7 %2001
InnSysVoice Corp648.3 %2014
Distributel577.4 %2006
ISP Telecom Inc.455.8 %2006
TELUS Mobility435.6 %2005
Comwave Networks425.4 %2012
Rogers Communications Canada Inc. (Cable)425.4 %2006
Zayo Canada Inc.344.4 %2005
Bell Mobility334.3 %2001
Fido Solutions Inc.263.4 %2001
Videotron Ltd.222.8 %2009
Primus Telecommunications Canada Inc.182.3 %2008
Bell Canada131.7 %2006
Execulink Telecom Inc.60.8 %2008
ExaTEL Inc.50.6 %2014
IXICA Communications Inc.20.3 %2020
Managed Network Systems Inc.20.3 %2010

Where these numbers land

Prefixes in 289 serve 87 rate centres. A rate centre is the billing area a prefix is attached to, not where the handset is.

Rate centreProvincePrefixesCarriers
HamiltonON7116
OakvilleON3915
OshawaON3613
St. Catharines-ThoroldON3513
BramptonON3015
Ajax-PickeringON2914
BurlingtonON2815
NewmarketON2516
Richmond HillON2113
CooksvilleON1911
StreetsvilleON1712
MarkhamON1610
ThornhillON1610
AuroraON1510
DunnvilleON147
MaltonON1410
MiltonON1411
Niagara FallsON137
WoodbridgeON139
AncasterON129
ClarksonON118
GeorgetownON1110
MapleON118
UnionvilleON108
WhitbyON107
BoltonON97
GrimsbyON98
South PickeringON98
WellandON97
CobourgON87
DundasON86
Fort ErieON86
King CityON86
Mount HopeON86
Stoney CreekON87
BinbrookON75
Oak RidgesON77
CaledoniaON64
Port CreditON66
Port PerryON65
StouffvilleON65
UxbridgeON65
WaterdownON66
BowmanvilleON53
HagersvilleON53
KleinburgON55
Niagara-On-The-LakeON53
NobletonON55
Caledon EastON44
CayugaON43
SchombergON44
BeamsvilleON33
BeetonON33
BrooklinON32
CampbellvilleON33
CastlemoreON33
FreeltonON33
GormleyON33
Mount AlbertON33
PalgraveON33
SuttonON33
West LincolnON33
WinonaON33
BethesdaON22
BradfordON22
KeswickON22
NewcastleON22
NewtonvilleON22
PelhamON22
Port ColborneON22
Port HopeON22
QueensvilleON22
VictoriaON22
VinelandON22
BlackstockON11
ClaremontON11
ColborneON11
FishervilleON11
GraftonON11
HamptonON11

How the allocation was built up

PeriodPrefixesCarriers
2000–2004324
2005–200934315
2010–201429818
2015–2019979
2020–202421

Overlay area codes

289 shares its rate centres with 905, 365, 742, 506, 902, 204, 236, 250, 431, 450, 579, 584. 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 366 of 772 prefixes, largest rate centres first.

Hamilton, ON

289-237 · 289-244 · 289-246 · 289-253 · 289-260 · 289-263 · 289-308 · 289-309 · 289-335 · 289-339

Oakville, ON

289-218 · 289-242 · 289-243 · 289-259 · 289-291 · 289-295 · 289-300 · 289-351 · 289-363 · 289-386

Oshawa, ON

289-222 · 289-240 · 289-254 · 289-274 · 289-312 · 289-316 · 289-355 · 289-356 · 289-367 · 289-385

St. Catharines-Thorold, ON

289-213 · 289-214 · 289-219 · 289-228 · 289-241 · 289-267 · 289-273 · 289-353 · 289-362 · 289-364

Brampton, ON

289-201 · 289-233 · 289-298 · 289-323 · 289-325 · 289-368 · 289-401 · 289-406 · 289-410 · 289-418

Ajax-Pickering, ON

289-200 · 289-224 · 289-255 · 289-275 · 289-314 · 289-315 · 289-372 · 289-387 · 289-388 · 289-403

Burlington, ON

289-208 · 289-230 · 289-245 · 289-266 · 289-288 · 289-293 · 289-313 · 289-337 · 289-348 · 289-419

Newmarket, ON

289-231 · 289-264 · 289-279 · 289-319 · 289-338 · 289-340 · 289-366 · 289-383 · 289-395 · 289-453

Richmond Hill, ON

289-269 · 289-317 · 289-379 · 289-399 · 289-452 · 289-475 · 289-496 · 289-506 · 289-537 · 289-538

Cooksville, ON

289-232 · 289-261 · 289-327 · 289-360 · 289-374 · 289-421 · 289-444 · 289-454 · 289-497 · 289-521

Streetsville, ON

289-290 · 289-305 · 289-334 · 289-375 · 289-457 · 289-540 · 289-652 · 289-719 · 289-726 · 289-814

Markham, ON

289-301 · 289-306 · 289-307 · 289-378 · 289-451 · 289-469 · 289-507 · 289-554 · 289-590 · 289-661

Thornhill, ON

289-390 · 289-459 · 289-472 · 289-502 · 289-510 · 289-514 · 289-561 · 289-582 · 289-588 · 289-593

Aurora, ON

289-221 · 289-258 · 289-380 · 289-466 · 289-552 · 289-571 · 289-614 · 289-648 · 289-796 · 289-802

Dunnville, ON

289-209 · 289-330 · 289-331 · 289-332 · 289-369 · 289-377 · 289-381 · 289-433 · 289-518 · 289-604

Malton, ON

289-247 · 289-328 · 289-359 · 289-384 · 289-548 · 289-562 · 289-623 · 289-625 · 289-721 · 289-729

Milton, ON

289-270 · 289-350 · 289-409 · 289-412 · 289-429 · 289-627 · 289-655 · 289-670 · 289-728 · 289-851

Niagara Falls, ON

289-248 · 289-257 · 289-271 · 289-292 · 289-294 · 289-296 · 289-302 · 289-341 · 289-361 · 289-402

Woodbridge, ON

289-236 · 289-256 · 289-268 · 289-371 · 289-393 · 289-474 · 289-536 · 289-589 · 289-596 · 289-622

Ancaster, ON

289-204 · 289-239 · 289-346 · 289-443 · 289-445 · 289-450 · 289-495 · 289-515 · 289-735 · 289-739

Clarkson, ON

289-299 · 289-326 · 289-373 · 289-420 · 289-628 · 289-727 · 289-825 · 289-826 · 289-849 · 289-898

Georgetown, ON

289-344 · 289-349 · 289-428 · 289-642 · 289-694 · 289-790 · 289-839 · 289-890 · 289-891 · 289-924

Maple, ON

289-217 · 289-304 · 289-342 · 289-357 · 289-468 · 289-532 · 289-553 · 289-583 · 289-832 · 289-917

Unionville, ON

289-333 · 289-392 · 289-473 · 289-563 · 289-577 · 289-584 · 289-789 · 289-806 · 289-844 · 289-884

Whitby, ON

289-220 · 289-278 · 289-483 · 289-509 · 289-638 · 289-717 · 289-732 · 289-893 · 289-985 · 289-989

Bolton, ON

289-206 · 289-461 · 289-487 · 289-503 · 289-585 · 289-616 · 289-651 · 289-875 · 289-906

Grimsby, ON

289-205 · 289-235 · 289-336 · 289-447 · 289-455 · 289-493 · 289-754 · 289-770 · 289-797

South Pickering, ON

289-229 · 289-277 · 289-484 · 289-631 · 289-734 · 289-744 · 289-882 · 289-915 · 289-986

Welland, ON

289-347 · 289-414 · 289-449 · 289-480 · 289-488 · 289-673 · 289-820 · 289-821 · 289-823

Cobourg, ON

289-215 · 289-251 · 289-252 · 289-435 · 289-677 · 289-691 · 289-771 · 289-829

Dundas, ON

289-238 · 289-345 · 289-446 · 289-494 · 289-517 · 289-737 · 289-753 · 289-858

Fort Erie, ON

289-250 · 289-303 · 289-320 · 289-321 · 289-322 · 289-476 · 289-599 · 289-762

King City, ON

289-207 · 289-467 · 289-530 · 289-572 · 289-618 · 289-621 · 289-874 · 289-907

Mount Hope, ON

289-280 · 289-281 · 289-425 · 289-491 · 289-525 · 289-759 · 289-791 · 289-866

Stoney Creek, ON

289-203 · 289-448 · 289-490 · 289-526 · 289-760 · 289-765 · 289-792 · 289-965

Binbrook, ON

289-286 · 289-287 · 289-424 · 289-522 · 289-568 · 289-743 · 289-756

Oak Ridges, ON

289-210 · 289-234 · 289-471 · 289-543 · 289-573 · 289-665 · 289-854

Caledonia, ON

289-284 · 289-285 · 289-523 · 289-751 · 289-757 · 289-960

Port Credit, ON

289-297 · 289-329 · 289-643 · 289-822 · 289-847 · 289-953

Port Perry, ON

289-225 · 289-354 · 289-485 · 289-653 · 289-713 · 289-912

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.