Phone prefixes in Laterriere, QC

In numbers

In-service prefixes

7

Telephone numbers covered

70,000

Carriers

6

Area codes

3

Provinces and territories

1

First assignment

January 20, 2005

Most recent assignment

November 8, 2022

Laterriere’s share of its area codes

Within area code 418, Laterriere accounts for only 3 of 777 prefixes (0.4%): the code is dominated by Quebec and spread over 258 rate centres. Within area code 581, Laterriere 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, Laterriere accounts for only 1 of 233 prefixes (0.4%): the code is dominated by Quebec and spread over 111 rate centres.

Who holds these numbers

Videotron Ltd. holds the largest share at 2 prefixes, 28.6% of the total, ahead of 5 other carriers. Code by code: in 418, Videotron Ltd. leads with 2 of 3 prefixes ahead of 1 others; in 581, Distributel leads with 1 of 3 prefixes ahead of 2 others; Fibernetics Corporation is the only holder in 367. No carrier holds prefixes in every one of Laterriere’s 3 area codes, while 6 appear in just one.

Wireless and wireline

None of Laterriere’s holders carries a mobility brand in its registered name: all 7 prefixes belong to wireline or wholesale carriers, among them Videotron Ltd, Bell Canada, Distributel and Fibernetics Corporation. A call showing a Laterriere number therefore nominally comes from a landline, cable or VoIP platform rather than a locally assigned cellphone.

How the allocation was built up

Laterriere’s dated assignments run from 2005 to 2022. The busiest period was 2005–2009, when 2 prefixes went to 1 carrier. 1 prefixes (14%) 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.

Laterriere’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 Videotron Ltd. in 2005. The most recent arrivals are Fibernetics Corporation (2022), Distributel (2018) and TELUS Quebec (2015), a sign that new carriers are still asking for numbers in Laterriere.

Laterriere has just 7 prefixes (70,000 numbers): a very small rate centre, typical of a village or rural area served by a single switching office.

No single carrier dominates Laterriere: the leader, Videotron Ltd., holds only 28.6% of the prefixes against 5 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 16.7% of the dated prefixes are less than ten years old, most having been handed out in 2005–2009, and 1 prefixes go back to the undated monopoly era. New Laterriere numbers mostly come out of blocks that were assigned long ago.

1 undated in the register.

Dialling a Laterriere number

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

The numbering neighbourhood

Laterriere shares area codes 418, 581 and 367 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 Laterriere number tells you

A number attached to Laterriere tells you that its prefix was issued to a carrier for this rate centre in Quebec, most often Videotron Ltd.. It does not tell you where the handset is today: a subscriber may have ported the number to any of the 6 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 Laterriere: code 418-303 is recorded for Videotron Ltd., so every 418-303-XXXX number (10,000 possible) descends from that assignment. “Laterriere, Quebec” there names a rate centre, not a municipality, and several area codes overlay it.

Every Laterriere prefix

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

Allocated prefixes

All 7 in-service prefixes, grouped by rate centre.

Elsewhere in Quebec