Phone prefixes in Tilley, AB

In numbers

In-service prefixes

1

Telephone numbers covered

10,000

Carriers

1

Area codes

1

Provinces and territories

1

Tilley’s share of its area code

Within area code 403, Tilley accounts for only 1 of 781 prefixes (0.1%): the code is dominated by Calgary and spread over 142 rate centres.

Who holds these numbers

TELUS holds every prefix here. Code by code: TELUS is the only holder in 403.

Wireless and wireline

None of Tilley’s holders carries a mobility brand in its registered name: all 1 prefixes belong to wireline or wholesale carriers, among them TELUS. A call showing a Tilley number therefore nominally comes from a landline, cable or VoIP platform rather than a locally assigned cellphone.

How the allocation was built up

The register dates none of Tilley’s assignments: all 1 prefixes predate CNAC’s record-keeping, the signature of an old, settled network where nothing has been added in decades.

TELUS is the only carrier ever recorded for Tilley: no competitor has obtained a prefix here. A single-carrier rate centre is typical of small communities where only the incumbent ever built a network.

Tilley has just 1 prefix (10,000 numbers): a very small rate centre, typical of a village or rural area served by a single switching office.

The local market is an allocation monopoly: TELUS holds every prefix, and no competitor has ever requested a code for Tilley.

Dialling a Tilley number

A single area code, 403, covers Tilley, and it is not overlaid with any other code on this territory: one of the few parts of Canada where seven-digit local dialling may still work. From abroad, dial +1 403 and the seven-digit number.

The numbering neighbourhood

Tilley shares area code 403 with at least 20 other rate centres, including Calgary, Red Deer, Lethbridge, Medicine Hat, Canmore, High River, Strathmore and Brooks. The largest of them, Calgary, holds 370 prefixes in 403; the smallest on the list, Ponoka, has just 6.

What a Tilley number tells you

A number attached to Tilley tells you that its prefix was issued to a carrier for this rate centre in Alberta, most often TELUS. It does not tell you where the handset is today: a subscriber may have ported the number to any of the 1 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 Alberta area code is easy to borrow to look local.

Reading a register entry for Tilley: code 403-377 is recorded for TELUS, so every 403-377-XXXX number (10,000 possible) descends from that assignment. “Tilley, Alberta” there names a rate centre, not a municipality.

Every Tilley prefix

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

Allocated prefixes

All 1 in-service prefixes, grouped by rate centre.

Elsewhere in Alberta