Phone numbers and area codes in Ontario

CNAC records 9,891 in-service central-office prefixes for Ontario, spread across 19 area codes, 724 rate centres and 59 carriers. Each area code is broken down below with its main rate centres and the number of prefixes it carries.

Background reading: Canadian area codes, overlays, and what a 416 number actually tells you · Your rights: caller data, privacy law and persistent callers

In numbers

In-service prefixes: 9,891
Telephone numbers covered: 98,910,000
Carriers: 59
Rate centres: 724
Area codes: 19
First assignment: October 13, 1999
Most recent assignment: June 12, 2026

Area codes

226

Acton, Ailsa Craig, Alvinston, Amherstburg, Arkona, Arthur, Atwood, Aylmer, Ayr, Ayton, Baden, Bayfield, Beachville, Belle River, Belmont, B

778 prefixes

249

Alban, Algoma Mills, Algonquin Park, Alliston, Apsley, Attawapiskat, Azilda, Bailieboro, Bala, Barrie, Batchawana Bay, Baysville, Beaverton,

585 prefixes

289

Ajax-Pickering, Ancaster, Aurora, Beamsville, Beeton, Bethesda, Binbrook, Blackstock, Bolton, Bowmanville, Bradford, Brampton, Brooklin, Bur

772 prefixes

343

Adolphustown, Alexandria, Alfred, Almonte, Arden, Arnprior, Athens, Avonmore, Bancroft, Barry's Bay, Bath, Belleville, Bloomfield, Bourget,

638 prefixes

365

Ajax-Pickering, Ancaster, Aurora, Beamsville, Beeton, Bethesda, Binbrook, Blackstock, Bolton, Bowmanville, Bradford, Brampton, Brooklin, Bur

702 prefixes

382

Belmont, Brantford, Caledon, Centralia, Chatham, Clinton, Crediton, Delhi, Dorchester, Dundalk, Elora, Erin, Exeter, Fergus, Galt, Glencoe,

60 prefixes

416

Toronto

778 prefixes

437

Toronto

548 prefixes

519

Aberarder, Acton, Ailsa Craig, Alvinston, Alvinston Independant, Amherstburg, Arkona, Arthur, Atwood, Auburn, Aylmer, Ayr, Ayton, Baden, Bay

778 prefixes

548

Acton, Ailsa Craig, Alvinston, Amherstburg, Arthur, Atwood, Auburn, Aylmer, Ayr, Baden, Beachville, Belle River, Belmont, Blenheim, Blyth, B

499 prefixes

613

Adolphustown, Alexandria, Alfred, Almonte, Arden, Arnprior, Athens, Avonmore, Bancroft, Barry's Bay, Bath, Beachburg, Belleville, Bloomfield

770 prefixes

647

Toronto

778 prefixes

683

Alban, Algoma Mills, Algonquin Park, Alliston, Apsley, Bailieboro, Barrie, Bethany, Biscotasing, Bluewater, Bobcaygeon, Borden-Angus, Braceb

80 prefixes

705

Abitibi Canyon, Alban, Algoma Mills, Algonquin Park, Alliston, Apsley, Attawapiskat, Azilda, Bailieboro, Bala, Barrie, Batchawana Bay, Baysv

769 prefixes

742

Ajax-Pickering, Aurora, Beamsville, Beeton, Bethesda, Blackstock, Bolton, Bowmanville, Bradford, Brampton, Brooklin, Burlington, Caledon Eas

146 prefixes

753

Alexandria, Alfred, Almonte, Arnprior, Avonmore, Bancroft, Bath, Belleville, Bourget, Cardinal, Carleton Place, Casselman, Chesterville, Coe

102 prefixes

807

Armstrong, Atikokan, Balmertown, Barwick, Beardmore, Bears Passage, Bearskin Lake, Big Trout Lake, Caramat, Cat Lake, Clearwater Bay, Cloud

292 prefixes

905

Ajax-Pickering, Ancaster, Aurora, Beamsville, Beeton, Bethesda, Binbrook, Blackstock, Bolton, Bowmanville, Bradford, Brampton, Brooklin, Bur

772 prefixes

942

Toronto

44 prefixes

Where these numbers land

Rate centre	Province	Prefixes	Carriers
Toronto	ON	2,148	24
Ottawa-Hull	ON	441	20
Hamilton	ON	221	23
London	ON	217	23
Kitchener-Waterloo	ON	164	21
Windsor	ON	133	20
Brampton	ON	116	20
Oshawa	ON	110	20
St. Catharines-Thorold	ON	107	19
Barrie	ON	95	18
Oakville	ON	90	18
Kingston	ON	83	19
Markham	ON	81	17
Ajax-Pickering	ON	77	19
Cooksville	ON	77	15
Sudbury	ON	75	16
Guelph	ON	72	18
Thornhill	ON	71	18
Brantford	ON	70	17
Thunder Bay	ON	67	11
Burlington	ON	65	19
Streetsville	ON	64	17
Newmarket	ON	61	22
Peterborough	ON	60	16
Belleville	ON	54	18
Chatham	ON	52	17
Sarnia	ON	52	17
Malton	ON	49	18
Unionville	ON	48	16
Aurora	ON	47	19
Cornwall	ON	46	16
Richmond Hill	ON	46	19
Sault Ste. Marie	ON	45	14
Hespeler	ON	44	19
North Bay	ON	44	15
Milton	ON	41	16
Kanata-Stittsville	ON	39	15
Owen Sound	ON	37	16
Niagara Falls	ON	36	13
Stratford	ON	34	14
Brockville	ON	33	13
Huntsville	ON	33	15
Kenora	ON	31	5
Lindsay	ON	31	14
Woodstock	ON	31	12
Collingwood	ON	30	14
Woodbridge	ON	30	16
Dunnville	ON	28	14
Galt	ON	28	15
Maple	ON	28	14
Orangeville	ON	27	12
Orillia	ON	27	12
Timmins	ON	27	10
Clarkson	ON	26	14
Cobourg	ON	25	11
Smiths Falls	ON	25	13
Alliston	ON	24	13
Bancroft	ON	24	15
Welland	ON	24	13
Whitby	ON	24	12

Who holds these numbers

Bell Canada holds the largest share at 2,064 prefixes, 20.9% of the total, ahead of 58 other carriers.

Carrier	Prefixes	Share	First assigned
Bell Canada	2,064	20.9 %	1999
Rogers Communications Canada Inc. (Wireless)	1,016	10.3 %	1999
Bell Mobility	818	8.3 %	1999
Fibernetics Corporation	746	7.5 %	2006
Iristel Inc.	746	7.5 %	2006
TELUS Mobility	558	5.6 %	1999
TELUS Integrated Communications	554	5.6 %	2000
Rogers Communications Canada Inc. (Cable)	460	4.7 %	1999
Distributel	410	4.1 %	2006
ISP Telecom Inc.	339	3.4 %	2000
Fido Solutions Inc.	309	3.1 %	1999
Videotron Ltd.	271	2.7 %	2002
TekSavvy Solutions Inc	203	2.1 %	2015
IXICA Communications Inc.	191	1.9 %	2016
InnSysVoice Corp	153	1.5 %	2014
Comwave Networks	133	1.3 %	2012
Zayo Canada Inc.	132	1.3 %	1999
Bragg Communications Inc.	118	1.2 %	2008
Execulink Telecom Inc.	72	0.7 %	2006
Beanfield Technologies Inc.	59	0.6 %	2013
Rogers Communications Canada Inc.	58	0.6 %	2019
Primus Telecommunications Canada Inc.	48	0.5 %	2002
ExaTEL Inc.	42	0.4 %	2001
Nexicom Telecommunications Inc	40	0.4 %	2006
Northern Telephone Ltd.	40	0.4 %	2008
FGLTEL Inc.	37	0.4 %	2019
Cogeco Connexion Inc.	33	0.3 %	2023
Thunder Bay Telephone	23	0.2 %	—
Quadro Communications Co-operative Inc.	20	0.2 %	2010
Persona Communications Inc.	16	0.2 %	2002
Shaw Telecom Inc.	14	0.1 %	2007
Wightman Communications Ltd.	14	0.1 %	2005
Bell Aliant, a division of Bell Canada	12	0.1 %	2012
Managed Network Systems Inc.	12	0.1 %	2000
Mornington Communications Co-operative Ltd.	12	0.1 %	2007
Bruce Municipal Telephone System	11	0.1 %	2001
Gosfield North Communication Co-operative Ltd.	9	0.1 %	2013
Tuckersmith Communications Co-operative Ltd.	9	0.1 %	2006
Westport Telephone Company Limited	9	0.1 %	2006
TBayTel	8	0.1 %	2017

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.