Phone prefixes in Ailsa Craig, ON

In numbers

In-service prefixes

6

Telephone numbers covered

60,000

Carriers

6

Area codes

3

Provinces and territories

1

First assignment

May 24, 2006

Most recent assignment

May 19, 2023

Ailsa Craig’s share of its area codes

Within area code 226, Ailsa Craig accounts for only 2 of 778 prefixes (0.3%): the code is dominated by London and spread over 166 rate centres. Within area code 519, Ailsa Craig accounts for only 2 of 779 prefixes (0.3%): the code is dominated by London and spread over 210 rate centres. Within area code 548, Ailsa Craig accounts for only 2 of 499 prefixes (0.4%): 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, 16.7% of the total, ahead of 5 other carriers. Code by code: in 226, Distributel leads with 1 of 2 prefixes ahead of 1 others; in 519, Bell Canada leads with 1 of 2 prefixes ahead of 1 others; in 548, Fibernetics Corporation leads with 1 of 2 prefixes ahead of 1 others. No carrier holds prefixes in every one of Ailsa Craig’s 3 area codes, while 6 appear in just one.

Wireless and wireline

None of Ailsa Craig’s holders carries a mobility brand in its registered name: all 6 prefixes belong to wireline or wholesale carriers, among them Bell Canada, Distributel, Execulink Telecom Inc and Fibernetics Corporation. A call showing a Ailsa Craig number therefore nominally comes from a landline, cable or VoIP platform rather than a locally assigned cellphone.

How the allocation was built up

Ailsa Craig’s dated assignments run from 2006 to 2023. The busiest period was 2020–2024, when 3 prefixes went to 3 carriers. 1 prefixes (17%) carry no date in the register: these are the historic pre-1999 assignments, the wireline bedrock of the rate centre. Since 2020 another 3 prefixes have been added, so the rate centre is still growing.

Ailsa Craig’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 Execulink Telecom Inc. in 2006. The most recent arrivals are ISP Telecom Inc. (2023), TekSavvy Solutions Inc (2021) and Fibernetics Corporation (2020), a sign that new carriers are still asking for numbers in Ailsa Craig.

Ailsa Craig has just 6 prefixes (60,000 numbers): a very small rate centre, typical of a village or rural area served by a single switching office.

No single carrier dominates Ailsa Craig: the leader, Bell Canada, holds only 16.7% of the prefixes against 5 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: 60.0% of the dated prefixes were assigned in the last ten years, peaking in 2020–2024. Ailsa Craig is among the rate centres where demand for numbers is still rising quickly.

1 undated in the register.

Dialling a Ailsa Craig number

Ailsa Craig 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

Ailsa Craig 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 Ailsa Craig number tells you

A number attached to Ailsa Craig 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 6 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 Ailsa Craig: code 519-293 is recorded for Bell Canada, so every 519-293-XXXX number (10,000 possible) descends from that assignment. “Ailsa Craig, Ontario” there names a rate centre, not a municipality, and several area codes overlay it.

Every Ailsa Craig prefix

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

Allocated prefixes

All 6 in-service prefixes, grouped by rate centre.

Elsewhere in Ontario