Phone prefixes in Brockville, ON

In numbers

In-service prefixes

33

Telephone numbers covered

330,000

Carriers

13

Area codes

2

Provinces and territories

1

First assignment

September 13, 2000

Most recent assignment

December 27, 2024

Brockville’s share of its area codes

Within area code 343, Brockville accounts for only 17 of 641 prefixes (2.7%): the code is dominated by Ottawa-Hull and spread over 116 rate centres. Within area code 613, Brockville accounts for only 16 of 772 prefixes (2.1%): the code is dominated by Ottawa-Hull and spread over 132 rate centres.

Who holds these numbers

Bell Canada holds the largest share at 7 prefixes, 21.2% of the total, ahead of 12 other carriers. Code by code: in 343, Iristel Inc. leads with 4 of 17 prefixes ahead of 10 others; in 613, Bell Canada leads with 6 of 16 prefixes ahead of 7 others. 6 carriers hold prefixes in every one of Brockville’s 2 area codes, while 7 appear in just one.

Wireless and wireline

9 of Brockville’s 33 prefixes (27.3%) are held by carriers whose registered name marks a wireless business: TELUS Mobility, Bell Mobility, Rogers Communications Canada Inc. (Wireless) and Fido Solutions Inc. Wireline prefixes still outnumber them, carried by Bell Canada, Iristel Inc, Fibernetics Corporation and TELUS Integrated Communications. 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

Brockville’s dated assignments run from 2000 to 2024. The busiest period was 2015–2019, when 8 prefixes went to 7 carriers. 6 prefixes (18%) 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.

Brockville’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 TELUS Mobility in 2000. The most recent arrivals are Cogeco Connexion Inc. (2024), Videotron Ltd. (2018) and Rogers Communications Canada Inc. (Cable) (2017), a sign that new carriers are still asking for numbers in Brockville.

Brockville’s 33 prefixes provide 330,000 numbers, which corresponds to a mid-sized city or a well-established suburb that every major carrier wants a slice of.

No single carrier dominates Brockville: the leader, Bell Canada, holds only 21.2% of the prefixes against 12 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 18.5% of the dated prefixes are less than ten years old, most having been handed out in 2015–2019, and 6 prefixes go back to the undated monopoly era. New Brockville numbers mostly come out of blocks that were assigned long ago.

6 undated in the register.

Dialling a Brockville number

Brockville is served by 2 overlaid area codes (343 and 613). A 613 number is no more “out of town” than a 343 one; from abroad, dial +1 and the full ten digits.

The numbering neighbourhood

Brockville shares area codes 343 and 613 with at least 20 other rate centres, including Ottawa-Hull, Kingston, Belleville, Cornwall, Kanata-Stittsville, Smiths Falls, Bancroft and Carleton Place. The largest of them, Ottawa-Hull, holds 425 prefixes in 343 and 613; the smallest on the list, Cumberland, has just 10.

What a Brockville number tells you

A number attached to Brockville 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 13 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 Brockville: code 343-604 is recorded for Bell Canada, so every 343-604-XXXX number (10,000 possible) descends from that assignment. “Brockville, Ontario” there names a rate centre, not a municipality, and several area codes overlay it.

Every Brockville prefix

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

Allocated prefixes

All 33 in-service prefixes, grouped by rate centre.

Elsewhere in Ontario