Phone prefixes in Desbiens, QC

In numbers

In-service prefixes

5

Telephone numbers covered

50,000

Carriers

4

Area codes

3

Provinces and territories

1

First assignment

September 17, 2008

Most recent assignment

May 23, 2023

Desbiens’s share of its area codes

Within area code 581, Desbiens accounts for only 3 of 778 prefixes (0.4%): the code is dominated by Quebec and spread over 232 rate centres. Within area code 367, Desbiens accounts for only 1 of 232 prefixes (0.4%): the code is dominated by Quebec and spread over 110 rate centres. Within area code 418, Desbiens accounts for only 1 of 777 prefixes (0.1%): the code is dominated by Quebec and spread over 258 rate centres.

Who holds these numbers

TELUS Quebec holds the largest share at 2 prefixes, 40.0% of the total, ahead of 3 other carriers. Code by code: in 581, TELUS Quebec leads with 2 of 3 prefixes ahead of 1 others; ISP Telecom Inc. is the only holder in 367; Bell Canada is the only holder in 418. No carrier holds prefixes in every one of Desbiens’s 3 area codes, while 4 appear in just one.

Wireless and wireline

None of Desbiens’s holders carries a mobility brand in its registered name: all 5 prefixes belong to wireline or wholesale carriers, among them TELUS Quebec, Bell Canada, ISP Telecom Inc and Telecommunications Xittel Inc. A call showing a Desbiens number therefore nominally comes from a landline, cable or VoIP platform rather than a locally assigned cellphone.

How the allocation was built up

Desbiens’s dated assignments run from 2008 to 2023. The busiest period was 2005–2009, when 1 prefixes went to 1 carrier. 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 1 prefixes have been added, so the rate centre is still growing.

Desbiens’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 Quebec in 2008. The most recent arrivals are ISP Telecom Inc. (2023), Telecommunications Xittel Inc (2012) and TELUS Quebec (2008), a sign that new carriers are still asking for numbers in Desbiens.

Desbiens 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.

TELUS Quebec leads with 40.0% of the prefixes, but 3 competitors have set up in Desbiens: a market where the incumbent keeps the edge without exclusivity.

Demand remains steady: 25.0% of the dated prefixes go back to the last ten years, the most active period being 2005–2009. The rate centre is growing at a regular rather than explosive pace.

1 undated in the register.

Dialling a Desbiens number

Desbiens is served by 3 overlaid area codes (581, 367 and 418). A 418 number is no more “out of town” than a 581 one; from abroad, dial +1 and the full ten digits.

The numbering neighbourhood

Desbiens shares area codes 581, 367 and 418 with at least 20 other rate centres, including Quebec, Chicoutimi, Alma, Rimouski, Riviere-du-Loup, Thetford Mines, Sainte-Marie-de-Beauce and Levis. The largest of them, Quebec, holds 282 prefixes in 367, 418 and 581; the smallest on the list, Saint-Henri-de-Levis, has just 16.

What a Desbiens number tells you

A number attached to Desbiens tells you that its prefix was issued to a carrier for this rate centre in Quebec, most often TELUS Quebec. It does not tell you where the handset is today: a subscriber may have ported the number to any of the 4 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 Desbiens: code 581-817 is recorded for TELUS Quebec, so every 581-817-XXXX number (10,000 possible) descends from that assignment. “Desbiens, Quebec” there names a rate centre, not a municipality, and several area codes overlay it.

Every Desbiens prefix

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

Allocated prefixes

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

Elsewhere in Quebec