Phone prefixes in Tecumseh, ON

In numbers

In-service prefixes

13

Telephone numbers covered

130,000

Carriers

10

Area codes

3

Provinces and territories

1

First assignment

February 10, 2006

Most recent assignment

March 1, 2023

Tecumseh’s share of its area codes

Within area code 519, Tecumseh accounts for only 5 of 779 prefixes (0.6%): the code is dominated by London and spread over 210 rate centres. Within area code 548, Tecumseh accounts for only 5 of 499 prefixes (1.0%): the code is dominated by London and spread over 170 rate centres. Within area code 226, Tecumseh accounts for only 3 of 778 prefixes (0.4%): the code is dominated by London and spread over 166 rate centres.

Who holds these numbers

Bell Canada holds the largest share at 3 prefixes, 23.1% of the total, ahead of 9 other carriers. Code by code: in 519, Bell Canada leads with 3 of 5 prefixes ahead of 2 others; in 548, Fibernetics Corporation leads with 2 of 5 prefixes ahead of 3 others; in 226, InnSysVoice Corp leads with 1 of 3 prefixes ahead of 2 others. No carrier holds prefixes in every one of Tecumseh’s 3 area codes, while 10 appear in just one.

Wireless and wireline

None of Tecumseh’s holders carries a mobility brand in its registered name: all 13 prefixes belong to wireline or wholesale carriers, among them Bell Canada, Fibernetics Corporation, Distributel and ISP Telecom Inc. A call showing a Tecumseh number therefore nominally comes from a landline, cable or VoIP platform rather than a locally assigned cellphone.

How the allocation was built up

Tecumseh’s dated assignments run from 2006 to 2023. The busiest period was 2020–2024, when 5 prefixes went to 4 carriers. 3 prefixes (23%) carry no date in the register: these are the historic pre-1999 assignments, the wireline bedrock of the rate centre. Since 2020 another 5 prefixes have been added, so the rate centre is still growing.

Tecumseh’s oldest prefixes, the ones the register leaves undated, belong to Bell Canada: this carrier made up the landscape before competition arrived. The first dated assignment went to Rogers Communications Canada Inc. (Cable) in 2006. The most recent arrivals are IXICA Communications Inc. (2021), Fibernetics Corporation (2020) and TekSavvy Solutions Inc (2020), a sign that new carriers are still asking for numbers in Tecumseh.

Tecumseh has only 13 prefixes, or 130,000 numbers: a small rate centre, where the arrival of a single new carrier visibly changes the landscape.

No single carrier dominates Tecumseh: the leader, Bell Canada, holds only 23.1% of the prefixes against 9 competitors, a sign of a highly fragmented market where cable companies, mobility brands and VoIP providers weigh as much as the incumbent.

Growth is recent: 50.0% of the dated prefixes were assigned in the last ten years, peaking in 2020–2024. Tecumseh is among the rate centres where demand for numbers is still rising quickly.

3 undated in the register.

Dialling a Tecumseh number

Tecumseh is served by 3 overlaid area codes (519, 548 and 226). A 226 number is no more “out of town” than a 519 one; from abroad, dial +1 and the full ten digits.

The numbering neighbourhood

Tecumseh shares area codes 519, 548 and 226 with at least 20 other rate centres, including London, Kitchener-Waterloo, Windsor, Guelph, Brantford, Sarnia, Chatham and Hespeler. The largest of them, London, holds 214 prefixes in 226, 519 and 548; the smallest on the list, Essex, has just 16.

What a Tecumseh number tells you

A number attached to Tecumseh tells you that its prefix was issued to a carrier for this rate centre in Ontario, most often Bell Canada. It does not tell you where the handset is today: a subscriber may have ported the number to any of the 10 carriers present here or to a VoIP service usable anywhere. Nor does it tell you who is calling: caller ID can be spoofed, and an Ontario area code is easy to borrow to look local.

Reading a register entry for Tecumseh: code 519-735 is recorded for Bell Canada, so every 519-735-XXXX number (10,000 possible) descends from that assignment. “Tecumseh, Ontario” there names a rate centre, not a municipality, and several area codes overlay it.

Every Tecumseh prefix

Each row is an in-service central-office code recorded for Tecumseh, with its original holder and year of assignment.

Allocated prefixes

All 13 in-service prefixes, grouped by rate centre.

Elsewhere in Ontario