Phone prefixes in St. Clements, ON

In numbers

In-service prefixes

9

Telephone numbers covered

90,000

Carriers

9

Area codes

3

Provinces and territories

1

First assignment

October 18, 2005

Most recent assignment

February 4, 2021

St. Clements’s share of its area codes

Within area code 226, St. Clements accounts for only 5 of 778 prefixes (0.6%): the code is dominated by London and spread over 166 rate centres. Within area code 519, St. Clements accounts for only 3 of 779 prefixes (0.4%): the code is dominated by London and spread over 210 rate centres. Within area code 548, St. Clements accounts for only 1 of 499 prefixes (0.2%): the code is dominated by London and spread over 170 rate centres.

Who holds these numbers

Bell Canada holds the largest share at 1 prefixes, 11.1% of the total, ahead of 8 other carriers. Code by code: in 226, Distributel leads with 1 of 5 prefixes ahead of 4 others; in 519, Bell Canada leads with 1 of 3 prefixes ahead of 2 others; ISP Telecom Inc. is the only holder in 548. No carrier holds prefixes in every one of St. Clements’s 3 area codes, while 9 appear in just one.

Wireless and wireline

None of St. Clements’s holders carries a mobility brand in its registered name: all 9 prefixes belong to wireline or wholesale carriers, among them Bell Canada, Distributel, Execulink Telecom Inc and Fibernetics Corporation. A call showing a St. Clements number therefore nominally comes from a landline, cable or VoIP platform rather than a locally assigned cellphone.

How the allocation was built up

St. Clements’s dated assignments run from 2005 to 2021. The busiest period was 2015–2019, when 4 prefixes went to 4 carriers. 1 prefixes (11%) carry no date in the register: these are the historic pre-1999 assignments, the wireline bedrock of the rate centre. Since 2020 another 1 prefixes have been added, so the rate centre is still growing.

St. Clements’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 2005. The most recent arrivals are TekSavvy Solutions Inc (2021), ISP Telecom Inc. (2019) and Mornington Communications Co-operative Ltd. (2019), a sign that new carriers are still asking for numbers in St. Clements.

St. Clements has just 9 prefixes (90,000 numbers): a very small rate centre, typical of a village or rural area served by a single switching office.

No single carrier dominates St. Clements: the leader, Bell Canada, holds only 11.1% of the prefixes against 8 competitors, a sign of a highly fragmented market where cable companies, mobility brands and VoIP providers weigh as much as the incumbent.

Allocation is mature: only 12.5% of the dated prefixes are less than ten years old, most having been handed out in 2015–2019, and 1 prefixes go back to the undated monopoly era. New St. Clements numbers mostly come out of blocks that were assigned long ago.

1 undated in the register.

Dialling a St. Clements number

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

The numbering neighbourhood

St. Clements shares area codes 226, 519 and 548 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 St. Clements number tells you

A number attached to St. Clements 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 9 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 St. Clements: code 519-699 is recorded for Bell Canada, so every 519-699-XXXX number (10,000 possible) descends from that assignment. “St. Clements, Ontario” there names a rate centre, not a municipality, and several area codes overlay it.

Every St. Clements prefix

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

Allocated prefixes

All 9 in-service prefixes, grouped by rate centre.

Elsewhere in Ontario