Phone prefixes in Summit Lake, BC

In numbers

In-service prefixes

2

Telephone numbers covered

20,000

Carriers

2

Area codes

2

Provinces and territories

1

First assignment

May 13, 2016

Most recent assignment

May 13, 2016

Summit Lake’s share of its area codes

Within area code 236, Summit Lake accounts for only 1 of 730 prefixes (0.1%): the code is dominated by Vancouver and spread over 269 rate centres. Within area code 250, Summit Lake accounts for only 1 of 781 prefixes (0.1%): the code is dominated by Victoria and spread over 268 rate centres.

Who holds these numbers

Navigata Communications Limited holds the largest share at 1 prefixes, 50.0% of the total, ahead of 1 other carrier. Code by code: Navigata Communications Limited is the only holder in 236; TELUS is the only holder in 250. No carrier holds prefixes in every one of Summit Lake’s 2 area codes, while 2 appear in just one.

Wireless and wireline

None of Summit Lake’s holders carries a mobility brand in its registered name: all 2 prefixes belong to wireline or wholesale carriers, among them Navigata Communications Limited and TELUS. A call showing a Summit Lake number therefore nominally comes from a landline, cable or VoIP platform rather than a locally assigned cellphone.

How the allocation was built up

Summit Lake’s dated assignments run from 2016 to 2016. The busiest period was 2015–2019, when 1 prefixes went to 1 carrier. 1 prefixes (50%) carry no date in the register: these are the historic pre-1999 assignments, the wireline bedrock of the rate centre. No prefix has been added since 2020: demand for numbers in Summit Lake is flat.

Summit Lake’s oldest prefixes, the ones the register leaves undated, belong to TELUS: this carrier made up the landscape before competition arrived. The first dated assignment went to Navigata Communications Limited in 2016. The most recent arrivals are Navigata Communications Limited (2016), a sign that new carriers are still asking for numbers in Summit Lake.

Summit Lake has just 2 prefixes (20,000 numbers): a very small rate centre, typical of a village or rural area served by a single switching office.

Navigata Communications Limited leads with 50.0% of the prefixes, but 1 competitors have set up in Summit Lake: a market where the incumbent keeps the edge without exclusivity.

Allocation is mature: only 0.0% of the dated prefixes are less than ten years old, most having been handed out in 2015–2019, and 1 prefixes go back to the undated monopoly era. New Summit Lake numbers mostly come out of blocks that were assigned long ago.

Dialling a Summit Lake number

Summit Lake is served by 2 overlaid area codes (236 and 250). A 250 number is no more “out of town” than a 236 one; from abroad, dial +1 and the full ten digits.

The numbering neighbourhood

Summit Lake shares area codes 236 and 250 with at least 20 other rate centres, including Vancouver, Victoria, Kelowna, Nanaimo, South Kamloops, Prince George, Vernon and Penticton. The largest of them, Vancouver, holds 142 prefixes in 236; the smallest on the list, New Westminster, has just 11.

What a Summit Lake number tells you

A number attached to Summit Lake tells you that its prefix was issued to a carrier for this rate centre in British Columbia, most often Navigata Communications Limited. It does not tell you where the handset is today: a subscriber may have ported the number to any of the 2 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 British Columbia area code is easy to borrow to look local.

Reading a register entry for Summit Lake: code 236-406 is recorded for Navigata Communications Limited, so every 236-406-XXXX number (10,000 possible) descends from that assignment. “Summit Lake, British Columbia” there names a rate centre, not a municipality, and several area codes overlay it.

Every Summit Lake prefix

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

Allocated prefixes

All 2 in-service prefixes, grouped by rate centre.

Elsewhere in British Columbia