Phone prefixes in Henryville, QC

In numbers

In-service prefixes

6

Telephone numbers covered

60,000

Carriers

6

Area codes

3

Provinces and territories

1

First assignment

September 24, 2014

Most recent assignment

October 18, 2022

Henryville’s share of its area codes

Within area code 579, Henryville 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, Henryville accounts for only 1 of 56 prefixes (1.8%): the code is dominated by Valleyfield and spread over 49 rate centres. Within area code 450, Henryville accounts for only 1 of 775 prefixes (0.1%): the code is dominated by Granby and spread over 129 rate centres.

Who holds these numbers

Bell Canada holds the largest share at 1 prefixes, 16.7% of the total, ahead of 5 other carriers. Code by code: in 579, Fibernetics Corporation leads with 1 of 4 prefixes ahead of 3 others; IXICA Communications Inc. is the only holder in 354; Bell Canada is the only holder in 450. No carrier holds prefixes in every one of Henryville’s 3 area codes, while 6 appear in just one.

Wireless and wireline

None of Henryville’s holders carries a mobility brand in its registered name: all 6 prefixes belong to wireline or wholesale carriers, among them Bell Canada, Fibernetics Corporation, ISP Telecom Inc and IXICA Communications Inc. A call showing a Henryville number therefore nominally comes from a landline, cable or VoIP platform rather than a locally assigned cellphone.

How the allocation was built up

Henryville’s dated assignments run from 2014 to 2022. The busiest period was 2020–2024, when 3 prefixes went to 3 carriers. 1 prefixes (17%) carry no date in the register: these are the historic pre-1999 assignments, the wireline bedrock of the rate centre. Since 2020 another 3 prefixes have been added, so the rate centre is still growing.

Henryville’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 2014. The most recent arrivals are ISP Telecom Inc. (2022), IXICA Communications Inc. (2022) and Fibernetics Corporation (2021), a sign that new carriers are still asking for numbers in Henryville.

Henryville has just 6 prefixes (60,000 numbers): a very small rate centre, typical of a village or rural area served by a single switching office.

No single carrier dominates Henryville: the leader, Bell Canada, holds only 16.7% 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.

Growth is recent: 60.0% of the dated prefixes were assigned in the last ten years, peaking in 2020–2024. Henryville is among the rate centres where demand for numbers is still rising quickly.

1 undated in the register.

Dialling a Henryville number

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

The numbering neighbourhood

Henryville shares area codes 579, 354 and 450 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 Henryville number tells you

A number attached to Henryville 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 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 Henryville: code 450-299 is recorded for Bell Canada, so every 450-299-XXXX number (10,000 possible) descends from that assignment. “Henryville, Quebec” there names a rate centre, not a municipality, and several area codes overlay it.

Every Henryville prefix

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

Had a call from a Henryville number?

No clear pattern in reports on these numbers yet. If a call worried you:

1. Call back on a number you trust

   If a caller says they are your bank, the Canada Revenue Agency, a courier or your phone company, hang up and call the organization on the number from its website or your statement, never the number that called you. Caller ID can be faked.

2. Report the fraud

   Report the call or text to the Canadian Anti-Fraud Centre online or at 1-888-495-8501. If you lost money or gave out personal details, tell your bank first, then your local police.

   Report to the Canadian Anti-Fraud Centre ↗

3. Register on the National Do Not Call List

   Registering a landline or mobile on the National DNCL is free. Registered charities, political parties, newspapers and companies you already do business with may still call.

   National Do Not Call List ↗Who can still call you ↗

4. Forward suspicious texts to 7726

   Forward a scam or spam text to 7726 (SPAM on the keypad). It's free, and your carrier uses it to block the sender. Don't tap links or reply.

   Get Cyber Safe: forwarding to 7726 ↗

Allocated prefixes

All 6 in-service prefixes, grouped by rate centre.

Elsewhere in Quebec