Phone prefixes in St-Eustache, QC

In numbers

In-service prefixes

22

Telephone numbers covered

220,000

Carriers

8

Area codes

2

Provinces and territories

1

First assignment

May 6, 2004

Most recent assignment

December 9, 2024

St-Eustache’s share of its area codes

Within area code 450, St-Eustache accounts for only 11 of 775 prefixes (1.4%): the code is dominated by Granby and spread over 129 rate centres. Within area code 579, St-Eustache accounts for only 11 of 644 prefixes (1.7%): the code is dominated by Granby and spread over 126 rate centres.

Who holds these numbers

Bell Canada holds the largest share at 6 prefixes, 27.3% of the total, ahead of 7 other carriers. Code by code: in 450, Bell Canada leads with 5 of 11 prefixes ahead of 3 others; in 579, Iristel Inc. leads with 3 of 11 prefixes ahead of 6 others. 3 carriers hold prefixes in every one of St-Eustache’s 2 area codes, while 5 appear in just one.

Wireless and wireline

1 of St-Eustache’s 22 prefixes (4.5%) are held by carriers whose registered name marks a wireless business: Fido Solutions Inc. Wireline prefixes still outnumber them, carried by Bell Canada, Videotron Ltd, Iristel Inc and Fibernetics Corporation. 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

St-Eustache’s dated assignments run from 2004 to 2024. The busiest period was 2010–2014, when 5 prefixes went to 5 carriers. 5 prefixes (23%) carry no date in the register: these are the historic pre-1999 assignments, the wireline bedrock of the rate centre. Since 2020 another 4 prefixes have been added, so the rate centre is still growing.

St-Eustache’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 Fibernetics Corporation (2021), Bell Canada (2016) and Fido Solutions Inc. (2014), a sign that new carriers are still asking for numbers in St-Eustache.

St-Eustache has only 22 prefixes, or 220,000 numbers: a small rate centre, where the arrival of a single new carrier visibly changes the landscape.

No single carrier dominates St-Eustache: the leader, Bell Canada, holds only 27.3% 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.

Demand remains steady: 23.5% of the dated prefixes go back to the last ten years, the most active period being 2010–2014. The rate centre is growing at a regular rather than explosive pace.

The register also shows 1 prefix assigned but not yet in service in St-Eustache (Cogeco Connexion Inc): numbers that will start showing up on call displays in the coming months.

5 undated in the register.

Dialling a St-Eustache number

St-Eustache is served by 2 overlaid area codes (450 and 579). A 579 number is no more “out of town” than a 450 one; from abroad, dial +1 and the full ten digits.

The numbering neighbourhood

St-Eustache shares area codes 450 and 579 with at least 20 other rate centres, including Granby, Joliette, St-Jerome, St-Hyacinthe, Longueuil, Ste-Therese, Pont-Viau and Sorel. The largest of them, Granby, holds 51 prefixes in 450 and 579; the smallest on the list, Terrebonne, has just 17.

What a St-Eustache number tells you

A number attached to St-Eustache 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 St-Eustache: code 450-472 is recorded for Bell Canada, so every 450-472-XXXX number (10,000 possible) descends from that assignment. “St-Eustache, Quebec” there names a rate centre, not a municipality, and several area codes overlay it.

Every St-Eustache prefix

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

Allocated prefixes

All 22 in-service prefixes, grouped by rate centre.

Elsewhere in Quebec