Phone prefixes in Grassy Lake, AB

In numbers

In-service prefixes

2

Telephone numbers covered

20,000

Carriers

2

Area codes

2

Provinces and territories

1

First assignment

April 14, 2016

Most recent assignment

April 14, 2016

Grassy Lake’s share of its area codes

Within area code 403, Grassy Lake accounts for only 1 of 781 prefixes (0.1%): the code is dominated by Calgary and spread over 142 rate centres. Within area code 825, Grassy Lake accounts for only 1 of 770 prefixes (0.1%): the code is dominated by Calgary and spread over 301 rate centres.

Who holds these numbers

Distributel holds the largest share at 1 prefixes, 50.0% of the total, ahead of 1 other carrier. Code by code: TELUS is the only holder in 403; Distributel is the only holder in 825. No carrier holds prefixes in every one of Grassy Lake’s 2 area codes, while 2 appear in just one.

Wireless and wireline

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

How the allocation was built up

Grassy 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 Grassy Lake is flat.

Grassy 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 Distributel in 2016. The most recent arrivals are Distributel (2016), a sign that new carriers are still asking for numbers in Grassy Lake.

Grassy 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.

Distributel leads with 50.0% of the prefixes, but 1 competitors have set up in Grassy 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 Grassy Lake numbers mostly come out of blocks that were assigned long ago.

Dialling a Grassy Lake number

Grassy Lake is served by 2 overlaid area codes (403 and 825). A 825 number is no more “out of town” than a 403 one; from abroad, dial +1 and the full ten digits.

The numbering neighbourhood

Grassy Lake shares area codes 403 and 825 with at least 20 other rate centres, including Calgary, Edmonton, Red Deer, Lethbridge, Medicine Hat, High River, Canmore and Banff. The largest of them, Calgary, holds 517 prefixes in 403 and 825; the smallest on the list, Okotoks, has just 10.

What a Grassy Lake number tells you

A number attached to Grassy Lake tells you that its prefix was issued to a carrier for this rate centre in Alberta, most often Distributel. 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 an Alberta area code is easy to borrow to look local.

Reading a register entry for Grassy Lake: code 825-679 is recorded for Distributel, so every 825-679-XXXX number (10,000 possible) descends from that assignment. “Grassy Lake, Alberta” there names a rate centre, not a municipality, and several area codes overlay it.

Every Grassy Lake prefix

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

Had a call from a Grassy Lake 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 2 in-service prefixes, grouped by rate centre.

Elsewhere in Alberta