Phone prefixes in St-Andre Est, QC

In numbers

In-service prefixes

3

Telephone numbers covered

30,000

Carriers

3

Area codes

2

Provinces and territories

1

First assignment

April 3, 2007

Most recent assignment

February 5, 2026

St-Andre Est’s share of its area codes

Within area code 450, St-Andre Est accounts for only 2 of 775 prefixes (0.3%): the code is dominated by Granby and spread over 129 rate centres. Within area code 579, St-Andre Est accounts for only 1 of 644 prefixes (0.2%): the code is dominated by Granby and spread over 126 rate centres.

Who holds these numbers

Bell Canada holds the largest share at 1 prefixes, 33.3% of the total, ahead of 2 other carriers. Code by code: in 450, Bell Canada leads with 1 of 2 prefixes ahead of 1 others; TELUS Quebec is the only holder in 579. No carrier holds prefixes in every one of St-Andre Est’s 2 area codes, while 3 appear in just one.

Wireless and wireline

None of St-Andre Est’s holders carries a mobility brand in its registered name: all 3 prefixes belong to wireline or wholesale carriers, among them Bell Canada, TELUS Quebec and Videotron Ltd. A call showing a St-Andre Est number therefore nominally comes from a landline, cable or VoIP platform rather than a locally assigned cellphone.

How the allocation was built up

St-Andre Est’s dated assignments run from 2007 to 2026. The busiest period was 2005–2009, when 1 prefixes went to 1 carrier. 1 prefixes (33%) 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.

St-Andre Est’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 2007. The most recent arrivals are TELUS Quebec (2026) and Videotron Ltd. (2007), a sign that new carriers are still asking for numbers in St-Andre Est.

St-Andre Est has just 3 prefixes (30,000 numbers): a very small rate centre, typical of a village or rural area served by a single switching office.

No single carrier dominates St-Andre Est: the leader, Bell Canada, holds only 33.3% of the prefixes against 2 competitors, a sign of a highly fragmented market where cable companies, mobility brands and VoIP providers weigh as much as the incumbent.

Growth is recent: 50.0% of the dated prefixes were assigned in the last ten years, peaking in 2005–2009. St-Andre Est is among the rate centres where demand for numbers is still rising quickly.

1 undated in the register.

Dialling a St-Andre Est number

St-Andre Est 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-Andre Est 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, Lachute, has just 17.

What a St-Andre Est number tells you

A number attached to St-Andre Est 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 3 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-Andre Est: code 450-537 is recorded for Bell Canada, so every 450-537-XXXX number (10,000 possible) descends from that assignment. “St-Andre Est, Quebec” there names a rate centre, not a municipality, and several area codes overlay it.

Every St-Andre Est prefix

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

Allocated prefixes

All 3 in-service prefixes, grouped by rate centre.

Elsewhere in Quebec