Phone prefixes in Chapais, QC

In numbers

In-service prefixes

2

Telephone numbers covered

20,000

Carriers

2

Area codes

2

Provinces and territories

1

First assignment

August 10, 2020

Most recent assignment

August 10, 2020

Chapais’s share of its area codes

Within area code 418, Chapais accounts for only 1 of 777 prefixes (0.1%): the code is dominated by Quebec and spread over 258 rate centres. Within area code 581, Chapais accounts for only 1 of 778 prefixes (0.1%): the code is dominated by Quebec and spread over 232 rate centres.

Who holds these numbers

SSi Micro Ltd. holds the largest share at 1 prefixes, 50.0% of the total, ahead of 1 other carrier. Code by code: Telebec Ltee. is the only holder in 418; SSi Micro Ltd. is the only holder in 581. No carrier holds prefixes in every one of Chapais’s 2 area codes, while 2 appear in just one.

Wireless and wireline

None of Chapais’s holders carries a mobility brand in its registered name: all 2 prefixes belong to wireline or wholesale carriers, among them SSi Micro Ltd and Telebec Ltee. A call showing a Chapais number therefore nominally comes from a landline, cable or VoIP platform rather than a locally assigned cellphone.

How the allocation was built up

Chapais’s dated assignments run from 2020 to 2020. The busiest period was 2020–2024, when 1 prefixes went to 1 carrier. 1 prefixes (50%) carry no date in the register: these are the historic pre-1999 assignments, the wireline bedrock of the rate centre. Since 2020 another 1 prefixes have been added, so the rate centre is still growing.

Chapais’s oldest prefixes, the ones the register leaves undated, belong to Telebec Ltee: this carrier made up the landscape before competition arrived. The first dated assignment went to SSi Micro Ltd. in 2020. The most recent arrivals are SSi Micro Ltd. (2020), a sign that new carriers are still asking for numbers in Chapais.

Chapais has just 2 prefixes (20,000 numbers): a very small rate centre, typical of a village or rural area served by a single switching office.

SSi Micro Ltd. leads with 50.0% of the prefixes, but 1 competitors have set up in Chapais: a market where the incumbent keeps the edge without exclusivity.

Growth is recent: 100.0% of the dated prefixes were assigned in the last ten years, peaking in 2020–2024. Chapais is among the rate centres where demand for numbers is still rising quickly.

Dialling a Chapais number

Chapais is served by 2 overlaid area codes (418 and 581). A 581 number is no more “out of town” than a 418 one; from abroad, dial +1 and the full ten digits.

The numbering neighbourhood

Chapais shares area codes 418 and 581 with at least 20 other rate centres, including Quebec, Chicoutimi, Rimouski, Alma, Riviere-du-Loup, Thetford Mines, Levis and Saint-Georges-de-Beauce. The largest of them, Quebec, holds 245 prefixes in 418 and 581; the smallest on the list, Chibougamau, has just 11.

What a Chapais number tells you

A number attached to Chapais tells you that its prefix was issued to a carrier for this rate centre in Quebec, most often SSi Micro Ltd.. It does not tell you where the handset is today: a subscriber may have ported the number to any of the 2 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 Chapais: code 581-972 is recorded for SSi Micro Ltd., so every 581-972-XXXX number (10,000 possible) descends from that assignment. “Chapais, Quebec” there names a rate centre, not a municipality, and several area codes overlay it.

Every Chapais prefix

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

Allocated prefixes

All 2 in-service prefixes, grouped by rate centre.

Elsewhere in Quebec