Check a number, and learn the rules that really protect you
A phone number on its own rarely proves a scam, but its type can be a warning, and the habits around it matter even more. Enter a number and this free tool tells you whether it is valid, where it is from, and what kind of line it is, then gives you the scam-awareness rules that stop phone fraud in its tracks. It runs entirely in your browser.
What it tells you
- Valid or not: whether it is a real, usable number at all.
- Country and line type: mobile, landline, internet (VoIP), premium rate or toll-free.
- Risk traits: premium-rate numbers that charge you, and VoIP numbers favoured by scam call centres.
The two rules that beat most phone scams
First, caller ID can be faked. Scammers can make any name or number show on your screen, including your own bank's real number. So never trust a call because of the number displayed. Second, no genuine bank, government body or company will ever phone and ask for your password, a one-time code, your PIN, or an urgent payment. Anyone who does, or who rushes you, is a scammer. If a call matters, hang up and call back on a number you look up yourself.
Honest about what a checker can and cannot do
This tool does not use a caller-reputation database, so it cannot name the owner of a number or confirm that a specific caller is a known scammer. What it does, reliably and privately, is classify the number and arm you with the behaviour that actually keeps you safe, which is worth more than any single lookup. It is part of the RealCheck set of tools for the AI era: is this real?