Phone prefixes in Trois-Rivieres, QC

In numbers

In-service prefixes

71

Telephone numbers covered

710,000

Carriers

16

Area codes

3

Provinces and territories

1

First assignment

January 26, 2000

Most recent assignment

March 10, 2025

Trois-Rivieres’s share of its area codes

Within area code 819, Trois-Rivieres accounts for only 49 of 770 prefixes (6.4%): the code is dominated by Ottawa-Hull and spread over 211 rate centres. Within area code 873, Trois-Rivieres accounts for only 21 of 667 prefixes (3.1%): the code is dominated by Sherbrooke and spread over 162 rate centres. Within area code 468, Trois-Rivieres accounts for only 1 of 67 prefixes (1.5%): the code is dominated by Ottawa-Hull and spread over 57 rate centres.

Who holds these numbers

Bell Canada holds the largest share at 21 prefixes, 29.6% of the total, ahead of 15 other carriers. Code by code: in 819, Bell Canada leads with 19 of 49 prefixes ahead of 11 others; in 873, Iristel Inc. leads with 5 of 21 prefixes ahead of 9 others; Cogeco Connexion Inc. is the only holder in 468. No carrier holds prefixes in every one of Trois-Rivieres’s 3 area codes, while 9 appear in just one.

Wireless and wireline

22 of Trois-Rivieres’s 71 prefixes (31.0%) are held by carriers whose registered name marks a wireless business: Bell Mobility, TELUS Mobility, Rogers Communications Canada Inc. (Wireless) and Fido Solutions Inc. Wireline prefixes still outnumber them, carried by Bell Canada, Iristel Inc, Videotron Ltd and TELUS Quebec. 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

Trois-Rivieres’s dated assignments run from 2000 to 2025. The busiest period was 2015–2019, when 14 prefixes went to 7 carriers. 20 prefixes (28%) carry no date in the register: these are the historic pre-1999 assignments, the wireline bedrock of the rate centre. Since 2020 another 6 prefixes have been added, so the rate centre is still growing.

Trois-Rivieres’s oldest prefixes, the ones the register leaves undated, belong to Bell Canada, Rogers Communications Canada Inc. (Wireless) and TELUS Mobility: these carriers made up the landscape before competition arrived. The first dated assignment went to Bell Canada in 2000. The most recent arrivals are Cogeco Connexion Inc. (2024), Rogers Communications Canada Inc. (Cable) (2017) and Comwave Networks (2013), a sign that new carriers are still asking for numbers in Trois-Rivieres.

Trois-Rivieres’s 71 prefixes provide 710,000 numbers, which corresponds to a mid-sized city or a well-established suburb that every major carrier wants a slice of.

No single carrier dominates Trois-Rivieres: the leader, Bell Canada, holds only 29.6% of the prefixes against 15 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 11.8% of the dated prefixes are less than ten years old, most having been handed out in 2015–2019, and 20 prefixes go back to the undated monopoly era. New Trois-Rivieres numbers mostly come out of blocks that were assigned long ago.

20 undated in the register.

Dialling a Trois-Rivieres number

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

The numbering neighbourhood

Trois-Rivieres shares area codes 819, 873 and 468 with at least 20 other rate centres, including Ottawa-Hull, Sherbrooke, Drummondville, Victoriaville, Gatineau, Val-D'Or, Maniwaki and Rouyn-Noranda. The largest of them, Ottawa-Hull, holds 122 prefixes in 468, 819 and 873; the smallest on the list, Plessisville, has just 11.

What a Trois-Rivieres number tells you

A number attached to Trois-Rivieres 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 16 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 Trois-Rivieres: code 819-370 is recorded for Bell Canada, so every 819-370-XXXX number (10,000 possible) descends from that assignment. “Trois-Rivieres, Quebec” there names a rate centre, not a municipality, and several area codes overlay it.

Every Trois-Rivieres prefix

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

What people check and report about Trois-Rivieres numbers

Searches typed into this site's lookup form since July 28, 2026, plus the verdicts and moderated reports visitors left. A search usually follows a missed call.

Had a call from a Trois-Rivieres 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 71 in-service prefixes, grouped by rate centre.

Elsewhere in Quebec