Phone prefixes in Stonewall, MB

In numbers

In-service prefixes

21

Telephone numbers covered

210,000

Carriers

14

Area codes

3

Provinces and territories

1

First assignment

February 28, 2001

Most recent assignment

October 15, 2025

Stonewall’s share of its area codes

Within area code 431, Stonewall accounts for only 11 of 571 prefixes (1.9%): the code is dominated by Winnipeg and spread over 146 rate centres. Within area code 204, Stonewall accounts for only 9 of 781 prefixes (1.2%): the code is dominated by Winnipeg and spread over 245 rate centres. Within area code 584, Stonewall accounts for only 1 of 15 prefixes (6.7%): the code is dominated by Winnipeg and spread over 13 rate centres.

Who holds these numbers

Iristel Inc. holds the largest share at 5 prefixes, 23.8% of the total, ahead of 13 other carriers. Code by code: in 431, Iristel Inc. leads with 5 of 11 prefixes ahead of 5 others; in 204, MTS Inc. leads with 2 of 9 prefixes ahead of 7 others; Bell Mobility is the only holder in 584. No carrier holds prefixes in every one of Stonewall’s 3 area codes, while 13 appear in just one.

Wireless and wireline

5 of Stonewall’s 21 prefixes (23.8%) are held by carriers whose registered name marks a wireless business: Bell Mobility, Fido Solutions Inc, Rogers Communications Canada Inc. (Wireless) and TELUS Mobility. Wireline prefixes still outnumber them, carried by Iristel Inc, Fibernetics Corporation, MTS Inc and Bell West Inc. 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

Stonewall’s dated assignments run from 2001 to 2025. The busiest period was 2020–2024, when 6 prefixes went to 4 carriers. 2 prefixes (10%) carry no date in the register: these are the historic pre-1999 assignments, the wireline bedrock of the rate centre. Since 2020 another 7 prefixes have been added, so the rate centre is still growing.

Stonewall’s oldest prefixes, the ones the register leaves undated, belong to MTS Inc: 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 ISP Telecom Inc. (2021), Fibernetics Corporation (2020) and Shaw Telecom Inc. (2019), a sign that new carriers are still asking for numbers in Stonewall.

Stonewall has only 21 prefixes, or 210,000 numbers: a small rate centre, where the arrival of a single new carrier visibly changes the landscape.

No single carrier dominates Stonewall: the leader, Iristel Inc., holds only 23.8% 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: 36.8% of the dated prefixes go back to the last ten years, the most active period being 2020–2024. The rate centre is growing at a regular rather than explosive pace.

2 undated in the register.

Dialling a Stonewall number

Stonewall is served by 3 overlaid area codes (431, 204 and 584). A 584 number is no more “out of town” than a 431 one; from abroad, dial +1 and the full ten digits.

The numbering neighbourhood

Stonewall shares area codes 431, 204 and 584 with at least 20 other rate centres, including Winnipeg, Brandon, Portage La Prairie, Steinbach, Oakbank, Dauphin, Selkirk and Thompson. The largest of them, Winnipeg, holds 389 prefixes in 204, 431 and 584; the smallest on the list, Austin, has just 9.

What a Stonewall number tells you

A number attached to Stonewall tells you that its prefix was issued to a carrier for this rate centre in Manitoba, most often Iristel Inc.. 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 a Manitoba area code is easy to borrow to look local.

Reading a register entry for Stonewall: code 431-244 is recorded for Iristel Inc., so every 431-244-XXXX number (10,000 possible) descends from that assignment. “Stonewall, Manitoba” there names a rate centre, not a municipality, and several area codes overlay it.

Every Stonewall prefix

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

Allocated prefixes

All 21 in-service prefixes, grouped by rate centre.

Elsewhere in Manitoba