Telecom & VoIP5 min read

New Area Code (742) for Southern Ontario

Area code 742 launched in Southern Ontario on October 16, 2021, joining 905, 289, and 365. Existing numbers unaffected. Details from Iristel, Canada's largest CLEC.

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Published On
November 14, 2021
John Erwin

New Area Code (742) for Southern Ontario

Iristel is proud to announce the launch of three new Canadian area codes, expanding numbering capacity in Southern Ontario, Alberta, and Eastern Ontario. As Canada’s largest independent CLEC, Iristel plays a central role in administering and distributing new area codes to carriers and businesses across the country.

New Area Code: 742 — Southern Ontario

Area code 742 was released for Southern Ontario on October 16, 2021, joining the existing 905, 289, and 365 codes that serve the Greater Toronto Area and surrounding regions. The addition of 742 expands numbering capacity for one of Canada’s fastest-growing regions — accommodating the continued surge in mobile, residential, and business phone number demand across the GTA and surrounding communities.

New area code 742 Southern Ontario Canada
Area code 742 expands Southern Ontario’s numbering capacity, joining 905, 289, and 365 to serve the GTA and surrounding regions.

New Area Code: 368 — Alberta

Area code 368 launched in Alberta on April 23, 2022, joining the existing 403, 587, 780, and 825 codes. Alberta’s rapid population growth — driven by immigration, interprovincial migration, and continued business expansion in Calgary, Edmonton, and surrounding communities — has accelerated number exhaustion across existing codes, making 368 a necessary addition to the provincial numbering plan.

New Area Code: 428 — New Brunswick

Area code 428 was introduced to New Brunswick on November 21, 2020, joining the province’s existing 506 code. New Brunswick’s single-area-code history made it one of the last provinces to require a new code addition, but growing mobile adoption and business number demand have made the expansion necessary.


What New Area Codes Mean for Canadian Businesses

ProvinceNew CodeLaunch DateJoins Existing Codes
Southern Ontario742October 16, 2021905, 289, 365
Alberta368April 23, 2022403, 587, 780, 825
New Brunswick428November 21, 2020506
Eastern Ontario753March 26, 2022613, 343

Existing customers’ phone numbers are not impacted by any of these area code additions. New numbers with the new area codes will simply begin being assigned by carriers alongside existing codes in each region.

Iristel’s Role in Canadian Number Administration

As Canada’s largest CLEC with the most comprehensive network of interconnected exchanges coast-to-coast, Iristel is among the first carriers to receive and distribute new area codes to businesses and consumers across Canada. Iristel offers local phone numbers in all Canadian area codes — including the new additions — for business, wholesale, and residential customers.

Get a number in any Canadian area code

Contact Iristel to provision local phone numbers in any Canadian province or territory. With same-day provisioning and one of the largest DID inventories in the country, Iristel is the right partner for any business looking to establish or expand its Canadian number presence.

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