Phone prefixes in Kitchener-Waterloo, ON

In numbers

In-service prefixes

165

Telephone numbers covered

1,650,000

Carriers

22

Area codes

4

Provinces and territories

1

First assignment

October 21, 1999

Most recent assignment

February 27, 2026

Kitchener-Waterloo’s share of its area codes

Within area code 519, Kitchener-Waterloo takes 80 of 779 prefixes (10.3%), a substantial slice of a code shared by 210 rate centres, the largest of them London. Within area code 226, Kitchener-Waterloo accounts for only 54 of 778 prefixes (6.9%): the code is dominated by London and spread over 166 rate centres. Within area code 548, Kitchener-Waterloo accounts for only 25 of 502 prefixes (5.0%): the code is dominated by London and spread over 170 rate centres. Within area code 382, Kitchener-Waterloo accounts for only 6 of 63 prefixes (9.5%): the code is dominated by Kitchener-Waterloo and spread over 41 rate centres.

Who holds these numbers

Bell Canada holds the largest share at 37 prefixes, 22.4% of the total, ahead of 21 other carriers. Code by code: in 519, Bell Canada leads with 34 of 80 prefixes ahead of 10 others; in 226, Rogers Communications Canada Inc. (Wireless) leads with 11 of 54 prefixes ahead of 16 others; in 548, Iristel Inc. leads with 5 of 25 prefixes ahead of 12 others; in 382, Rogers Communications Canada Inc. (Wireless) leads with 3 of 6 prefixes ahead of 2 others. 2 carriers hold prefixes in every one of Kitchener-Waterloo’s 4 area codes, while 11 appear in just one.

Wireless and wireline

69 of Kitchener-Waterloo’s 165 prefixes (41.8%) are held by carriers whose registered name marks a wireless business: Rogers Communications Canada Inc. (Wireless), Bell Mobility, TELUS Mobility and Fido Solutions Inc. Wireline prefixes still outnumber them, carried by Bell Canada, Iristel Inc, Rogers Communications Canada Inc. (Cable) and Videotron Ltd. 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

Kitchener-Waterloo’s dated assignments run from 1999 to 2026. The busiest period was 2010–2014, when 29 prefixes went to 13 carriers. 45 prefixes (27%) carry no date in the register: these are the historic pre-1999 assignments, the wireline bedrock of the rate centre. Since 2020 another 21 prefixes have been added, so the rate centre is still growing.

Kitchener-Waterloo’s oldest prefixes, the ones the register leaves undated, belong to Bell Canada, Rogers Communications Canada Inc. (Wireless) and Bell Mobility: 7 carriers made up the landscape before competition arrived. The first dated assignment went to Bell Mobility in 1999. The most recent arrivals are Cogeco Connexion Inc. (2026), IXICA Communications Inc. (2021) and TekSavvy Solutions Inc (2021), a sign that new carriers are still asking for numbers in Kitchener-Waterloo.

Its 165 prefixes stand for 1,650,000 possible numbers: Kitchener-Waterloo is a large rate centre, the kind that hosts several switching offices and a sizeable business clientele.

No single carrier dominates Kitchener-Waterloo: the leader, Bell Canada, holds only 22.4% of the prefixes against 21 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 17.5% of the dated prefixes are less than ten years old, most having been handed out in 2010–2014, and 45 prefixes go back to the undated monopoly era. New Kitchener-Waterloo numbers mostly come out of blocks that were assigned long ago.

The register also shows 1 prefix assigned but not yet in service in Kitchener-Waterloo (TELUS Mobility): numbers that will start showing up on call displays in the coming months.

45 undated in the register.

Dialling a Kitchener-Waterloo number

Kitchener-Waterloo is served by 4 overlaid area codes (519, 226, 548 and 382). A 382 number is no more “out of town” than a 519 one; from abroad, dial +1 and the full ten digits.

The numbering neighbourhood

Kitchener-Waterloo shares area codes 519, 226, 548 and 382 with at least 20 other rate centres, including London, Windsor, Guelph, Brantford, Chatham, Sarnia, Hespeler and Owen Sound. The largest of them, London, holds 218 prefixes in 226, 382, 519 and 548; the smallest on the list, St. Thomas, has just 15.

What a Kitchener-Waterloo number tells you

A number attached to Kitchener-Waterloo tells you that its prefix was issued to a carrier for this rate centre in Ontario, 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 22 carriers present here or to a VoIP service usable anywhere. Nor does it tell you who is calling: caller ID can be spoofed, and an Ontario area code is easy to borrow to look local.

Reading a register entry for Kitchener-Waterloo: code 519-568 is recorded for Bell Canada, so every 519-568-XXXX number (10,000 possible) descends from that assignment. “Kitchener-Waterloo, Ontario” there names a rate centre, not a municipality, and several area codes overlay it.

Every Kitchener-Waterloo prefix

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

What people check and report about Kitchener-Waterloo 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.

Checks

32

Different numbers

32

Different people

31

Had a call from a Kitchener-Waterloo 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 165 in-service prefixes, grouped by rate centre.

Elsewhere in Ontario