Phone prefixes in Dundalk, ON

In numbers

In-service prefixes

5

Telephone numbers covered

50,000

Carriers

5

Area codes

4

Provinces and territories

1

First assignment

March 15, 2016

Most recent assignment

June 14, 2024

Dundalk’s share of its area codes

Within area code 226, Dundalk accounts for only 2 of 778 prefixes (0.3%): the code is dominated by London and spread over 166 rate centres. Within area code 382, Dundalk accounts for only 1 of 60 prefixes (1.7%): the code is dominated by Kitchener-Waterloo and spread over 38 rate centres. Within area code 519, Dundalk accounts for only 1 of 779 prefixes (0.1%): the code is dominated by London and spread over 210 rate centres. Within area code 548, Dundalk 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, 20.0% of the total, ahead of 4 other carriers. Code by code: in 226, Bragg Communications Inc. leads with 1 of 2 prefixes ahead of 1 others; Rogers Communications Canada Inc. (Cable) is the only holder in 382; Bell Canada is the only holder in 519; Fibernetics Corporation is the only holder in 548. No carrier holds prefixes in every one of Dundalk’s 4 area codes, while 5 appear in just one.

Wireless and wireline

None of Dundalk’s holders carries a mobility brand in its registered name: all 5 prefixes belong to wireline or wholesale carriers, among them Bell Canada, Bragg Communications Inc, Fibernetics Corporation and Rogers Communications Canada Inc. (Cable). A call showing a Dundalk number therefore nominally comes from a landline, cable or VoIP platform rather than a locally assigned cellphone.

How the allocation was built up

Dundalk’s dated assignments run from 2016 to 2024. The busiest period was 2015–2019, when 2 prefixes went to 2 carriers. 1 prefixes (20%) carry no date in the register: these are the historic pre-1999 assignments, the wireline bedrock of the rate centre. Since 2020 another 2 prefixes have been added, so the rate centre is still growing.

Dundalk’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 Bragg Communications Inc. in 2016. The most recent arrivals are Rogers Communications Canada Inc. (Cable) (2024), Fibernetics Corporation (2021) and TELUS Integrated Communications (2017), a sign that new carriers are still asking for numbers in Dundalk.

Dundalk has just 5 prefixes (50,000 numbers): a very small rate centre, typical of a village or rural area served by a single switching office.

No single carrier dominates Dundalk: the leader, Bell Canada, holds only 20.0% of the prefixes against 4 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 2015–2019. Dundalk is among the rate centres where demand for numbers is still rising quickly.

1 undated in the register.

Dialling a Dundalk number

Dundalk is served by 4 overlaid area codes (226, 382, 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

Dundalk shares area codes 226, 382, 519 and 548 with at least 20 other rate centres, including London, Kitchener-Waterloo, Windsor, Guelph, Brantford, Chatham, Sarnia and Hespeler. The largest of them, London, holds 217 prefixes in 226, 382, 519 and 548; the smallest on the list, Essex, has just 16.

What a Dundalk number tells you

A number attached to Dundalk 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 5 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 Dundalk: code 519-923 is recorded for Bell Canada, so every 519-923-XXXX number (10,000 possible) descends from that assignment. “Dundalk, Ontario” there names a rate centre, not a municipality, and several area codes overlay it.

Every Dundalk prefix

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

Allocated prefixes

All 5 in-service prefixes, grouped by rate centre.

Elsewhere in Ontario