Phone prefixes in Grenville, QC

In numbers

In-service prefixes

6

Telephone numbers covered

60,000

Carriers

5

Area codes

3

Provinces and territories

1

First assignment

October 1, 2019

Most recent assignment

August 26, 2025

Grenville’s share of its area codes

Within area code 873, Grenville accounts for only 4 of 667 prefixes (0.6%): the code is dominated by Sherbrooke and spread over 162 rate centres. Within area code 468, Grenville accounts for only 1 of 67 prefixes (1.5%): the code is dominated by Ottawa-Hull and spread over 57 rate centres. Within area code 819, Grenville accounts for only 1 of 770 prefixes (0.1%): the code is dominated by Ottawa-Hull and spread over 211 rate centres.

Who holds these numbers

Bell Canada holds the largest share at 2 prefixes, 33.3% of the total, ahead of 4 other carriers. Code by code: in 873, Bell Canada leads with 1 of 4 prefixes ahead of 3 others; Cogeco Connexion Inc. is the only holder in 468; Bell Canada is the only holder in 819. No carrier holds prefixes in every one of Grenville’s 3 area codes, while 4 appear in just one.

Wireless and wireline

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

How the allocation was built up

Grenville’s dated assignments run from 2019 to 2025. 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 4 prefixes have been added, so the rate centre is still growing.

Grenville’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 Bell Canada in 2019. The most recent arrivals are Cogeco Connexion Inc. (2025), TELUS Quebec (2022) and Iristel Inc. (2022), a sign that new carriers are still asking for numbers in Grenville.

Grenville 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 Grenville: the leader, Bell Canada, holds only 33.3% of the prefixes against 4 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: 80.0% of the dated prefixes were assigned in the last ten years, peaking in 2020–2024. Grenville is among the rate centres where demand for numbers is still rising quickly.

1 undated in the register.

Dialling a Grenville number

Grenville is served by 3 overlaid area codes (873, 468 and 819). A 819 number is no more “out of town” than a 873 one; from abroad, dial +1 and the full ten digits.

The numbering neighbourhood

Grenville shares area codes 873, 468 and 819 with at least 20 other rate centres, including Ottawa-Hull, Sherbrooke, Trois-Rivieres, Drummondville, Victoriaville, Gatineau, Val-D'Or and Maniwaki. The largest of them, Ottawa-Hull, holds 122 prefixes in 468, 819 and 873; the smallest on the list, Ville-Marie, has just 12.

What a Grenville number tells you

A number attached to Grenville 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 5 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 Grenville: code 873-305 is recorded for Bell Canada, so every 873-305-XXXX number (10,000 possible) descends from that assignment. “Grenville, Quebec” there names a rate centre, not a municipality, and several area codes overlay it.

Every Grenville prefix

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

Allocated prefixes

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

Elsewhere in Quebec