Phone prefixes in Vaudreuil, QC

In numbers

In-service prefixes

12

Telephone numbers covered

120,000

Carriers

8

Area codes

3

Provinces and territories

1

First assignment

April 20, 2004

Most recent assignment

May 17, 2022

Vaudreuil’s share of its area codes

Within area code 450, Vaudreuil accounts for only 7 of 775 prefixes (0.9%): the code is dominated by Granby and spread over 129 rate centres. Within area code 579, Vaudreuil accounts for only 4 of 644 prefixes (0.6%): the code is dominated by Granby and spread over 126 rate centres. Within area code 354, Vaudreuil accounts for only 1 of 56 prefixes (1.8%): the code is dominated by Valleyfield and spread over 49 rate centres.

Who holds these numbers

Bell Canada holds the largest share at 3 prefixes, 25.0% of the total, ahead of 7 other carriers. Code by code: in 450, Bell Canada leads with 3 of 7 prefixes ahead of 3 others; in 579, Videotron Ltd. leads with 1 of 4 prefixes ahead of 3 others; IXICA Communications Inc. is the only holder in 354. No carrier holds prefixes in every one of Vaudreuil’s 3 area codes, while 7 appear in just one.

Wireless and wireline

1 of Vaudreuil’s 12 prefixes (8.3%) are held by carriers whose registered name marks a wireless business: TELUS Mobility. Wireline prefixes still outnumber them, carried by Bell Canada, Videotron Ltd, Comwave Networks and Distributel. 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

Vaudreuil’s dated assignments run from 2004 to 2022. The busiest period was 2010–2014, when 3 prefixes went to 3 carriers. 3 prefixes (25%) 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.

Vaudreuil’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 2004. The most recent arrivals are IXICA Communications Inc. (2022), Comwave Networks (2016) and TELUS Quebec (2013), a sign that new carriers are still asking for numbers in Vaudreuil.

Vaudreuil has only 12 prefixes, or 120,000 numbers: a small rate centre, where the arrival of a single new carrier visibly changes the landscape.

No single carrier dominates Vaudreuil: the leader, Bell Canada, holds only 25.0% of the prefixes against 7 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 11.1% of the dated prefixes are less than ten years old, most having been handed out in 2010–2014, and 3 prefixes go back to the undated monopoly era. New Vaudreuil numbers mostly come out of blocks that were assigned long ago.

3 undated in the register.

Dialling a Vaudreuil number

Vaudreuil is served by 3 overlaid area codes (450, 579 and 354). A 354 number is no more “out of town” than a 450 one; from abroad, dial +1 and the full ten digits.

The numbering neighbourhood

Vaudreuil shares area codes 450, 579 and 354 with at least 20 other rate centres, including Granby, Joliette, St-Jerome, St-Hyacinthe, Longueuil, Ste-Therese, St-Lambert and Sorel. The largest of them, Granby, holds 52 prefixes in 354, 450 and 579; the smallest on the list, Beloeil, has just 17.

What a Vaudreuil number tells you

A number attached to Vaudreuil tells you that its prefix was issued to a carrier for this rate centre in Quebec, most often Bell Canada. It does not tell you where the handset is today: a subscriber may have ported the number to any of the 8 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 Vaudreuil: code 450-424 is recorded for Bell Canada, so every 450-424-XXXX number (10,000 possible) descends from that assignment. “Vaudreuil, Quebec” there names a rate centre, not a municipality, and several area codes overlay it.

Every Vaudreuil prefix

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

Allocated prefixes

All 12 in-service prefixes, grouped by rate centre.

Elsewhere in Quebec