Phone prefixes in London, ON

In numbers

In-service prefixes

218

Telephone numbers covered

2,180,000

Carriers

24

Area codes

4

Provinces and territories

1

First assignment

October 21, 1999

Most recent assignment

February 27, 2026

London’s share of its area codes

Within area code 519, London takes 106 of 779 prefixes (13.6%), a substantial slice of a code shared by 210 rate centres, the largest of them London. Within area code 226, London accounts for only 72 of 778 prefixes (9.3%): the code is dominated by London and spread over 166 rate centres. Within area code 548, London accounts for only 37 of 504 prefixes (7.3%): the code is dominated by London and spread over 170 rate centres. Within area code 382, London accounts for only 3 of 63 prefixes (4.8%): the code is dominated by Kitchener-Waterloo and spread over 41 rate centres.

Who holds these numbers

Rogers Communications Canada Inc. (Wireless) holds the largest share at 51 prefixes, 23.4% of the total, ahead of 23 other carriers. Code by code: in 519, Bell Canada leads with 46 of 106 prefixes ahead of 12 others; in 226, Rogers Communications Canada Inc. (Wireless) leads with 21 of 72 prefixes ahead of 15 others; in 548, Rogers Communications Canada Inc. (Wireless) leads with 14 of 37 prefixes ahead of 11 others; in 382, Rogers Communications Canada Inc. (Wireless) leads with 2 of 3 prefixes ahead of 1 others. 2 carriers hold prefixes in every one of London’s 4 area codes, while 11 appear in just one.

Wireless and wireline

103 of London’s 218 prefixes (47.2%) 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

London’s dated assignments run from 1999 to 2026. The busiest period was 2015–2019, when 42 prefixes went to 12 carriers. 63 prefixes (29%) carry no date in the register: these are the historic pre-1999 assignments, the wireline bedrock of the rate centre. Since 2020 another 16 prefixes have been added, so the rate centre is still growing.

London’s oldest prefixes, the ones the register leaves undated, belong to Bell Canada, Bell Mobility and Rogers Communications Canada Inc. (Wireless): 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. (2023) and TekSavvy Solutions Inc (2021), a sign that new carriers are still asking for numbers in London.

Its 218 prefixes stand for 2,180,000 possible numbers: London is a large rate centre, the kind that hosts several switching offices and a sizeable business clientele.

No single carrier dominates London: the leader, Rogers Communications Canada Inc. (Wireless), holds only 23.4% of the prefixes against 23 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 10.3% of the dated prefixes are less than ten years old, most having been handed out in 2015–2019, and 63 prefixes go back to the undated monopoly era. New London numbers mostly come out of blocks that were assigned long ago.

The register also shows 2 prefixes assigned but not yet in service in London (Bell Mobility and TELUS Mobility): numbers that will start showing up on call displays in the coming months.

63 undated in the register.

Dialling a London number

London 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

London shares area codes 519, 226, 548 and 382 with at least 20 other rate centres, including Kitchener-Waterloo, Windsor, Guelph, Brantford, Chatham, Sarnia, Hespeler and Owen Sound. The largest of them, Kitchener-Waterloo, holds 165 prefixes in 226, 382, 519 and 548; the smallest on the list, St. Thomas, has just 16.

What a London number tells you

A number attached to London tells you that its prefix was issued to a carrier for this rate centre in Ontario, most often Rogers Communications Canada Inc. (Wireless). It does not tell you where the handset is today: a subscriber may have ported the number to any of the 24 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 London: code 519-200 is recorded for Rogers Communications Canada Inc. (Wireless), so every 519-200-XXXX number (10,000 possible) descends from that assignment. “London, Ontario” there names a rate centre, not a municipality, and several area codes overlay it.

Every London prefix

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

What people check and report about London 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

82

Different numbers

80

Different people

78

Had a call from a London 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 218 in-service prefixes, grouped by rate centre.

Elsewhere in Ontario