Phone number checker
Look up a single number above, or check a whole list at once with the bulk tool below.
Check a phone number in seconds
Enter a number above and you'll see what kind of line it is, where it's registered, what calling it costs and how other people rated it. That's normally all you need to decide whether to answer, call back, reply or block. It's free, there's no sign-up, and it handles overseas numbers as well as UK ones.
Write it however you like: 07700 900123, +44 7700 900123, 020 7946 0321, or an overseas number like +353 1 555 0182.
Check a list of numbers
Paste in up to 50 numbers, each on its own line or separated by commas. Each one gets a line type, area or country, cost and rating. We don't store the list or add any reports.
What the checker looks at
| Detail | What it means | Where it comes from |
|---|---|---|
| Line type | Whether it's a landline, mobile, freephone, 03 or premium line, worked out from the prefix | Ofcom numbering plan |
| Location | The town or city for landline codes like 0121 or 028 | UK area codes |
| Cost to call | Roughly what you'll pay to ring it back, from free to premium | Ofcom numbering plan |
| Caller rating | Scam, Spam, Neutral or Mixed, from people's reports | Visitor reports |
| Scam type | The kind of scam the number has been tied to | Visitor reports |
| Lookups | How often the number has been looked up in the last 30 days | Who Called Me Check |
What each rating means
Ratings are only as good as the reports behind them. Open a number to see what people actually said.
What a free number check can and can't do
- Can: show the line type, location, call cost and reports for UK numbers, and the country for foreign ones.
- Can't: give you a name or address. There's no free public list of who owns UK mobile numbers.
- Can't: look up withheld or private calls, because no number comes through.
- Remember: numbers can move between networks, be forwarded or be faked, so the results describe the number rather than whoever is using it.
Find out what prefixes reveal on whose telephone number is this, check a call as it rings with who is calling me, look up a missed call with who rang me, or browse by area code and mobile network.
When a quick check is worth it
- A missed call you don't recognise: some numbers are expensive to call back.
- A text telling you to ring a number: fake parcel, bank and tax messages often do this. Check it before you dial.
- Someone saying they're from a company: compare the number with the one on that company's website.
- A number printed in an advert or flyer: business-rate and premium lines can cost more than you'd think.
- The same number keeps calling: read the reports and add your own so the pattern is clear to everyone.
Most looked-up numbers this week
Questions about the checker
Is the phone number checker free?
Yes, completely. No account, no card details and no cap on single lookups. If a number has called you, you can rate it as well.
How does the checker work?
Enter or paste the number in the box at the top and press Who called?. Spaces are fine, and you can start with 0, +44 or 0044. You'll get the line type, area, cost to call, the caller rating and every published report.
How accurate are the results?
Line type, area and cost are taken from the UK numbering plan, so they're reliable for the number range. Ratings come from visitors, so a number nobody has reported shows as Unrated. Numbers that have been ported or forwarded may not behave the way the prefix suggests.
What does Unrated mean?
No one has rated the number yet, so there is no evidence one way or the other. Rated numbers show Scam, Spam, Mixed reports or Neutral.
Can I check a number from another country?
Yes. Include the country code, such as +49 151 2345 6789, and the result shows the country. Anything starting with 0 and no code is treated as a UK number.
Does the checker show who owns the number?
No. We aren't a directory of names. You get the type, area, cost and what people reported, which is normally enough to make a decision about the call.
Can I check a whole list of numbers?
Yes. Paste up to 50 numbers into the bulk checker, one per line or separated by commas. Each one gets a type, area or country, cost and rating. Bulk checks are read-only and never add reports.
Do I need to give any of my own details?
No. You only type in the number you want to check. We never ask for your name, email address or phone number.