Phone prefixes in Tavistock, ON

In numbers

In-service prefixes

7

Telephone numbers covered

70,000

Carriers

7

Area codes

2

Provinces and territories

1

First assignment

November 14, 2005

Most recent assignment

June 13, 2022

Tavistock’s share of its area codes

Within area code 548, Tavistock accounts for only 5 of 499 prefixes (1.0%): the code is dominated by London and spread over 170 rate centres. Within area code 519, Tavistock accounts for only 2 of 779 prefixes (0.3%): the code is dominated by London and spread over 210 rate centres.

Who holds these numbers

Bell Canada holds the largest share at 1 prefixes, 14.3% of the total, ahead of 6 other carriers. Code by code: in 548, Fibernetics Corporation leads with 1 of 5 prefixes ahead of 4 others; in 519, Bell Canada leads with 1 of 2 prefixes ahead of 1 others. No carrier holds prefixes in every one of Tavistock’s 2 area codes, while 7 appear in just one.

Wireless and wireline

None of Tavistock’s holders carries a mobility brand in its registered name: all 7 prefixes belong to wireline or wholesale carriers, among them Bell Canada, Fibernetics Corporation, Mornington Communications Co-operative Ltd and Quadro Communications Co-operative Inc. A call showing a Tavistock number therefore nominally comes from a landline, cable or VoIP platform rather than a locally assigned cellphone.

How the allocation was built up

Tavistock’s dated assignments run from 2005 to 2022. The busiest period was 2020–2024, when 3 prefixes went to 3 carriers. 1 prefixes (14%) 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.

Tavistock’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 Rogers Communications Canada Inc. (Cable) in 2005. The most recent arrivals are Quadro Communications Co-operative Inc. (2022), Mornington Communications Co-operative Ltd. (2022) and Fibernetics Corporation (2021), a sign that new carriers are still asking for numbers in Tavistock.

Tavistock has just 7 prefixes (70,000 numbers): a very small rate centre, typical of a village or rural area served by a single switching office.

No single carrier dominates Tavistock: the leader, Bell Canada, holds only 14.3% of the prefixes against 6 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: 50.0% of the dated prefixes were assigned in the last ten years, peaking in 2020–2024. Tavistock is among the rate centres where demand for numbers is still rising quickly.

1 undated in the register.

Dialling a Tavistock number

Tavistock is served by 2 overlaid area codes (548 and 519). A 519 number is no more “out of town” than a 548 one; from abroad, dial +1 and the full ten digits.

The numbering neighbourhood

Tavistock shares area codes 548 and 519 with at least 20 other rate centres, including London, Kitchener-Waterloo, Windsor, Guelph, Brantford, Sarnia, Chatham and Hespeler. The largest of them, London, holds 142 prefixes in 519 and 548; the smallest on the list, St. Thomas, has just 10.

What a Tavistock number tells you

A number attached to Tavistock 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 7 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 Tavistock: code 519-655 is recorded for Bell Canada, so every 519-655-XXXX number (10,000 possible) descends from that assignment. “Tavistock, Ontario” there names a rate centre, not a municipality, and several area codes overlay it.

Every Tavistock prefix

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

Allocated prefixes

All 7 in-service prefixes, grouped by rate centre.

Elsewhere in Ontario