About WhoCalledLookup
WhoCalledLookup is an independent, free-to-use UK reverse phone lookup. We aim to give people a quick, accurate, no-signup way to answer who called me?
Where the data comes from
Range-holder data is sourced from the official Ofcom Numbering Data feed, published weekly on Wednesdays. We ingest the ZIP, atomically swap our live database, and surface the Range Holder, allocation status and area code on every lookup.
The AI internet check is powered by OpenAI's web-search-grounded models. For every lookup, the LLM searches forums (Reddit, MoneySavingExpert), scam-reporting databases (who-called-me.com, whocallsme), Trustpilot reviews, and business directory listings, then summarises and cites what it finds. Results are cached for 30 days per number.
What we don't do
- We do not buy or sell phone-number data.
- We do not store the raw IP address of visitors.
- We do not require you to create an account.
- We do not surface paid-for "premium" listings dressed as organic results.
How we keep it accurate
Every Wednesday at 06:30 UTC, our cron downloads the latest Ofcom ZIP, stream-parses the CSVs, bulk-inserts into a staging table, and atomically swaps it into production. If the archive hash hasn't changed, we no-op. You can see the date of the last successful ingest on the homepage footer.
Who runs the site
WhoCalledLookup is built and operated by OmegaIT, a UK technology consultancy specialising in telecoms data, identity, and AI-powered consumer tools. Editorial direction and the AI internet check methodology are owned by A. Pickett, Managing Director, OmegaIT.
Affiliation
WhoCalledLookup is not affiliated with Ofcom, BT, or any UK communications provider. Ofcom's data is published under the Open Government Licence v3.0 and is reproduced here under that licence.