Phone prefixes in Aylmer

In numbers

In-service prefixes

22

Telephone numbers covered

220,000

Carriers

12

Area codes

5

Provinces and territories

2

First assignment

May 24, 2002

Most recent assignment

September 2, 2025

Provinces and territories

This name is used for separate rate centres in 2 provinces. The prefixes below share a name in the CNAC register but belong to different communities.

• Quebec — 14 prefixes
• Ontario — 8 prefixes

Aylmer’s share of its area codes

Within area code 819, Aylmer accounts for only 7 of 770 prefixes (0.9%): the code is dominated by Ottawa-Hull and spread over 211 rate centres. Within area code 873, Aylmer accounts for only 7 of 667 prefixes (1.0%): the code is dominated by Sherbrooke and spread over 162 rate centres. Within area code 226, Aylmer accounts for only 3 of 778 prefixes (0.4%): the code is dominated by London and spread over 166 rate centres. Within area code 519, Aylmer 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, Aylmer 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 3 prefixes, 13.6% of the total, ahead of 11 other carriers. Code by code: in 819, Bell Canada leads with 3 of 7 prefixes ahead of 2 others; in 873, Fibernetics Corporation leads with 2 of 7 prefixes ahead of 5 others; in 226, Iristel Inc. leads with 1 of 3 prefixes ahead of 2 others; Persona Communications Inc. is the only holder in 519; in 548, Fibernetics Corporation leads with 1 of 2 prefixes ahead of 1 others. No carrier holds prefixes in every one of Aylmer’s 5 area codes, while 9 appear in just one.

Wireless and wireline

2 of Aylmer’s 22 prefixes (9.1%) are held by carriers whose registered name marks a wireless business: Bell Mobility and TELUS Mobility. Wireline prefixes still outnumber them, carried by Bell Canada, Fibernetics Corporation, Persona Communications Inc and Videotron Ltd. This is a sort by name, not a licence lookup, and a mobile prefix may have been ported to another network since.

How the allocation was built up

Aylmer’s dated assignments run from 2002 to 2025. The busiest period was 2015–2019, when 5 prefixes went to 5 carriers. 5 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 4 prefixes have been added, so the rate centre is still growing.

Aylmer’s oldest prefixes, the ones the register leaves undated, belong to Bell Canada and Persona Communications Inc: these carriers made up the landscape before competition arrived. The first dated assignment went to Persona Communications Inc. in 2002. The most recent arrivals are Fibernetics Corporation (2020), Iristel Inc. (2019) and Distributel (2018), a sign that new carriers are still asking for numbers in Aylmer.

Aylmer has only 22 prefixes, or 220,000 numbers: a small rate centre, where the arrival of a single new carrier visibly changes the landscape.

No single carrier dominates Aylmer: the leader, Bell Canada, holds only 13.6% of the prefixes against 11 competitors, a sign of a highly fragmented market where cable companies, mobility brands and VoIP providers weigh as much as the incumbent.

Demand remains steady: 23.5% of the dated prefixes go back to the last ten years, the most active period being 2015–2019. The rate centre is growing at a regular rather than explosive pace.

5 undated in the register.

Dialling a Aylmer number

Aylmer is served by 5 overlaid area codes (819, 873, 226, 519 and 548). A 548 number is no more “out of town” than a 819 one; from abroad, dial +1 and the full ten digits.

The numbering neighbourhood

Aylmer shares area codes 819, 873, 226, 519 and 548 with at least 20 other rate centres, including London, Kitchener-Waterloo, Windsor, Ottawa-Hull, Sherbrooke, Guelph, Trois-Rivieres and Brantford. The largest of them, London, holds 214 prefixes in 226, 519 and 548; the smallest on the list, Val-D'Or, has just 27.

What a Aylmer number tells you

A number attached to Aylmer tells you that its prefix was issued to a carrier for this rate centre in Quebec, 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 12 carriers present here or to a VoIP service usable anywhere. Nor does it tell you who is calling: caller ID can be spoofed, and a Quebec area code is easy to borrow to look local.

Reading a register entry for Aylmer: code 819-682 is recorded for Bell Canada, so every 819-682-XXXX number (10,000 possible) descends from that assignment. “Aylmer, Quebec” there names a rate centre, not a municipality, and several area codes overlay it.

Every Aylmer prefix

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

Allocated prefixes

All 22 in-service prefixes, grouped by rate centre.

Elsewhere in Quebec