Phone prefixes in Dunnville, ON

In numbers

In-service prefixes

28

Telephone numbers covered

280,000

Carriers

14

Area codes

3

Provinces and territories

1

First assignment

May 11, 2001

Most recent assignment

May 30, 2024

Dunnville’s share of its area codes

Within area code 289, Dunnville accounts for only 14 of 772 prefixes (1.8%): the code is dominated by Hamilton and spread over 87 rate centres. Within area code 365, Dunnville accounts for only 11 of 702 prefixes (1.6%): the code is dominated by Markham and spread over 88 rate centres. Within area code 905, Dunnville accounts for only 3 of 773 prefixes (0.4%): the code is dominated by Hamilton and spread over 94 rate centres.

Who holds these numbers

Rogers Communications Canada Inc. (Wireless) holds the largest share at 9 prefixes, 32.1% of the total, ahead of 13 other carriers. Code by code: in 289, Rogers Communications Canada Inc. (Wireless) leads with 7 of 14 prefixes ahead of 6 others; in 365, Iristel Inc. leads with 4 of 11 prefixes ahead of 6 others; Bell Canada is the only holder in 905. No carrier holds prefixes in every one of Dunnville’s 3 area codes, while 13 appear in just one.

Wireless and wireline

11 of Dunnville’s 28 prefixes (39.3%) are held by carriers whose registered name marks a wireless business: Rogers Communications Canada Inc. (Wireless), Bell Mobility and Fido Solutions Inc. Wireline prefixes still outnumber them, carried by Iristel Inc, Bell Canada, Rogers Communications Canada Inc. (Cable) and Comwave Networks. 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

Dunnville’s dated assignments run from 2001 to 2024. The busiest period was 2010–2014, when 7 prefixes went to 3 carriers. 3 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 5 prefixes have been added, so the rate centre is still growing.

Dunnville’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. (Wireless) in 2001. The most recent arrivals are Fibernetics Corporation (2022), TekSavvy Solutions Inc (2020) and ISP Telecom Inc. (2020), a sign that new carriers are still asking for numbers in Dunnville.

Dunnville has only 28 prefixes, or 280,000 numbers: a small rate centre, where the arrival of a single new carrier visibly changes the landscape.

No single carrier dominates Dunnville: the leader, Rogers Communications Canada Inc. (Wireless), holds only 32.1% of the prefixes against 13 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: 20.0% of the dated prefixes go back to the last ten years, the most active period being 2010–2014. The rate centre is growing at a regular rather than explosive pace.

3 undated in the register.

Dialling a Dunnville number

Dunnville is served by 3 overlaid area codes (289, 365 and 905). A 905 number is no more “out of town” than a 289 one; from abroad, dial +1 and the full ten digits.

The numbering neighbourhood

Dunnville shares area codes 289, 365 and 905 with at least 20 other rate centres, including Hamilton, Oshawa, Brampton, St. Catharines-Thorold, Oakville, Markham, Cooksville and Ajax-Pickering. The largest of them, Hamilton, holds 213 prefixes in 289, 365 and 905; the smallest on the list, Maple, has just 26.

What a Dunnville number tells you

A number attached to Dunnville tells you that its prefix was issued to a carrier for this rate centre in Ontario, most often Rogers Communications Canada Inc. (Wireless). It does not tell you where the handset is today: a subscriber may have ported the number to any of the 14 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 Dunnville: code 289-209 is recorded for Rogers Communications Canada Inc. (Wireless), so every 289-209-XXXX number (10,000 possible) descends from that assignment. “Dunnville, Ontario” there names a rate centre, not a municipality, and several area codes overlay it.

Every Dunnville prefix

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

Allocated prefixes

All 28 in-service prefixes, grouped by rate centre.

Elsewhere in Ontario