Who Called Me? Find Out Who's Behind Any UK Number
Had a missed call from a number you don't recognise? Check it against live Ofcom data in seconds, see which numbers other UK visitors are reporting this week, and learn exactly how to block and report the callers you'd rather never hear from again.
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Find out who called you — three steps
There is no public UK directory that hands you a stranger's name from their mobile number — any site promising that is selling something. What you can get, free and instantly, is everything Ofcom publishes about the number plus first-hand reports from other people it has called. That is nearly always enough to decide whether to call back.
Run the number through the checker
Copy the number from your call log and paste it into the free UK Phone Number Checker. You'll see whether it's valid, the number type, the town or city for 01/02 landlines, and the Ofcom range holder — the provider the number block was originally allocated to.
Read what the type tells you
A normal 07 mobile could be anyone. An 01/02 landline gives you a place. An 0800/0808 caller is almost always a business, because they pay for the call. And a call from 070 personal numbering or an 09 premium line you don't recognise is a red flag — never call those back.
Check reports, then block if needed
Every number on this site has a report page where visitors describe the calls they've had — scam scripts, silent calls, delivery spam. If the number looks dodgy, block it on your phone and report it (steps below). If it matters, a genuine caller leaves a voicemail or tries again.
This week's most-reported UK numbers
Live from our community reports: the numbers UK visitors have flagged most in the last 7 days. Every report is human-moderated before it appears. Tap a number to read the full reports and add your own.
Reports are submitted by visitors and moderated before publication; they reflect callers' experiences, not verified facts about the number's owner. Updated continuously.
Recognise the start of the number?
The first few digits of a UK number tell you what kind of caller you're dealing with before you look anything up. These are the prefixes visitors look up most on this site — each guide covers who holds the range, what calls cost, current scam patterns and how to block them.
0203
London landline0204
London landline0208
London landline0333
Business — costs same as 01/020330
Business — costs same as 01/020800
Freephone — free to call0207
London landline0345
Business — costs same as 01/02070
NOT a mobile — scam risk0808
Freephone — free to call0300
Business — costs same as 01/020844
Service charge appliesHow to block and report nuisance calls
Blocking deals with the number that just called; reporting helps get the campaign behind it shut down. Both take under a minute:
- Block on iPhone: Phone app → Recents → tap the (i) next to the number → Block Caller. For blanket protection, Settings → Phone → Silence Unknown Callers sends numbers not in your contacts straight to voicemail.
- Block on Android: Phone app → Recents → long-press the number → Block / Report spam. Most Android dialers also offer Caller ID & spam protection under Settings.
- Scam texts: forward the message free to 7726 — your network uses these to trace and block the sender.
- Report scam calls: to Action Fraud if you've been targeted by fraud, or complain about nuisance marketing via Ofcom.
- Cut legitimate marketing calls: register your number free with the Telephone Preference Service — UK companies calling TPS-registered numbers without consent are breaking the law.
- If you've lost money: call your bank immediately (use the number on your card, or dial 159 to be connected securely), then report to Action Fraud.
Common questions about UK phone numbers
How do I find out who called me from a UK number?
Type the number into our free UK Phone Number Checker. It runs a longest-prefix lookup against live Ofcom range-holder data and shows you which UK communications provider Ofcom originally allocated that number block to, plus the number type, geographic area (for 01/02 landlines), call-cost guidance and a risk flag for scam-prone ranges. Then check the number's report page to see whether other visitors have reported calls from it.
Is there a free UK reverse phone lookup?
Yes — our checker at /check-uk-phone-number is completely free with no signup. It works for any UK number (mobile, landline, freephone, premium, personal-numbering) and returns Ofcom range-holder data instantly.
Which UK prefix is most often a scam?
070 (personal-numbering) is the most scam-prone UK prefix — calls are expensive (up to £1+/min) and the range is heavily abused for callback fraud. Specific 07-mobile prefixes like 07441 and 07379 have also been reported repeatedly in 2025-26 for HMRC, Royal Mail and bank impersonation scams.
How can I block UK spam calls?
For individual numbers, use your phone's block function (iPhone: Phone app → Recents → (i) → Block; Android: Phone app → Recents → long-press → Block). For ongoing protection, enable iPhone's "Silence Unknown Callers" or Android's "Filter spam calls". For sales-call reduction, register with the Telephone Preference Service (TPS) at tpsonline.org.uk.
What is an Ofcom "range holder"?
The range holder is the UK communications provider (BT, Gamma, Vodafone, Sky, EE, O2, Three, Virtual1 and others) that Ofcom originally allocated a block of numbers to. It is the most reliable public-data answer to "whose number is this?" Numbers can be ported to other providers after allocation, but the range holder remains the standard industry reference.
All UK prefix lookup guides
UK Mobile Ranges (07XX)
074410770007379074770735907389073040757507735078530738407375073010739407429074950734007393073780786807445074240737707949075390741107534073800796007946073990798807898073760748807418074820782207537074900736807342073610738307455078880787407419073670778207360075590740007307077220795607944076130782807365075200786307309074630777707427073950757607741073980741407341077980778807496074640748307766073620776507303
London Area Codes (020)
Non-Geographic (03XX)
0330033303450300034403430370037103030306
Freephone (0800 / 0808)
Personal Numbering (070) — Scam Warning
Service-Charge (084X / 087X)
Premium Rate (09XX) — Scam Warning
Got the full 11-digit number?
Look up any UK number — mobile, landline, freephone, premium — instantly with the free UK Phone Number Checker tool, against live Ofcom data.