About and methodology
Who Called Canada answers a simple question — “who called me?” — with the only authoritative Canadian source for the factual half of the answer: the Canadian Numbering Administrator’s allocation register. This page explains who runs the site, where the data comes from, how it is processed and what the site deliberately refuses to do.
Operator: OmegaIT. E-mail: hello@whocalledcanada.com.
Who we are
The site is operated by OmegaIT, which also publishes reverse-lookup services for the United Kingdom, the United States and several European countries, all built the same way: the country’s official numbering register first, the community second, never subscriber lists. The site is independent: it is not affiliated with CNAC, the CRTC, the Canadian Anti-Fraud Centre or any telecommunications carrier.
Where the data comes from
The factual part of every page comes from the public files of the Canadian Numbering Administrator (CNAC), the body mandated by the CRTC to assign central-office codes (NPA-NXX) and thousands-blocks to carriers. We import the central-office code report and the pooled-block report every week. Only codes marked “In Service” are shown: available, reserved and test codes describe no reachable number. At the last import the register held 28,530 in-service prefixes issued to 98 carriers across 2,921 rate centres and 55 area codes.
How the import is checked
Each file is loaded into a staging table and validated before publication: Canadian provinces only (US rows of the North American Numbering Plan are rejected), a row count within a plausible range of the previous import, three-digit area codes and prefixes, coherent dates. If any check fails the import is abandoned and the previous version stays live. The source date is printed at the foot of every data page, and a daily freshness check alerts the operator when the register could not be refreshed.
What a page says, and does not say
An allocation states which carrier a prefix was issued to and for which rate centre. It does not say who holds the number today: with number portability a subscriber can change carrier and keep the number, and a cellphone follows its owner anywhere in the country. Nor does it say who is calling, since caller ID can be spoofed. We repeat this on every page because it is the main source of misunderstanding.
Community content and moderation
Visitors can vote (scam, nuisance, safe) and write a report. An automatic screen blocks links, social insurance numbers and repetitive content; a moderator then reads every report before publication and removes personal data or accusations naming a person. A number page is offered to search engines only once it carries an approved report or a vote with a substantive comment: a bare click on “scam” is not enough, because it says nothing another page does not already say. Moderation decisions are logged and open to challenge (see Disputes).
The guides
The 7 guides are written by the team from CRTC decisions, Canadian Anti-Fraud Centre advisories and federal and provincial legislation, and every claim links to its source. They are re-read at each regulatory change; the review date is shown at the top of each guide.
What the site does not do
- It does not identify the subscriber behind a number and buys no directory or data-broker files;
- It does not sell data and offers no bulk download;
- It shows no advertising on data pages (numbers, cities, area codes, carriers), only on the editorial guides;
- It never claims a number is “safe”: the absence of reports is not a guarantee.
Funding
The site is free and funded by advertising shown on the guides. No carrier, advertiser or public body takes part in writing it.
Contact
Questions, corrections, privacy requests: hello@whocalledcanada.com or the contact form.
Last updated 2026-09-01.