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Know who's calling before you pick up

Instantly check any UK phone number. See spam scores, read community reports, and protect yourself from scams.

374,173
Numbers Tracked
19,969
Community Reports
423
Scam Numbers
9,026
Lookups Today

Figures refresh every few minutes · last updated 3 minutes ago

Where our data comes from

Data from the community

Every risk score comes from reports submitted by real people who received the call, not from purchased marketing databases.

How scores are calculated

Spam scores blend the safe, suspicious and spam ratings in community reports, and a number with only a few reports is held closer to neutral. More about spam scores.

Screened before it counts

New reports are screened before they affect a score, and suspect submissions are held for human review. About CallerCheck.

Built on community reports and UK safety guidance — CallerCheck combines reports from real users with risk scoring, moderation, and safety guidance informed by UK organisations such as Action Fraud, Ofcom, the ICO, the NCSC, 7726 spam-text reporting, and the 159 banking helpline where relevant.

New: CallerCheck for iPhone

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The app puts CallerCheck on your phone. Numbers people have reported as scam or spam show a warning when they ring, so you know before you pick up.

  • Caller ID warnings Reported numbers are labelled when they call and in your Recents. Nothing about your calls leaves your phone.
  • Check any number in seconds Paste it from Recents or share a contact, then read what other people in the UK have said.
  • Report a call in under a minute Warn others about a scam or nuisance caller, and see when your report is published.
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AI Insights

What Our AI Has Discovered

Our AI reads the approved community reports for a number and summarises the patterns it finds. It doesn't set spam scores, which come from the reports themselves, and every summary links to the reports behind it.

07860043075 87% Risk

This UK mobile number on the O2 network is mainly seen in UPS scam texts about deliveries. Reports describe impersonation of UPS delivery notices, sometimes directing you to call this number, and occasionally tying in a company like SKS UK Ltd. There are also mentions of Amazon-themed texts using the same number. Common red flags include grammar mistakes, deadlines to reply, and pressure to act quickly. A few reports note it’s been used for UPS returns texts; one user warned it could be legitimate, but the grammar and wording were suspicious. If you don’t recognise the sender, ignore and block. Verify any delivery by contacting UPS through official channels, not this number. Do not click or reply.

42 reports analysed View details
07537453904 86% Risk

This UK mobile number, registered with Vodafone, is frequently associated with scam text messages claiming you owe money for parking fines. Reports consistently mention that the sender knows your vehicle registration number, but provides no details about where or when the supposed parking violation occurred. Some people have received demands for payment via text or email, often for a significant amount like Β£170, even though they received no prior official letters or warnings. Several users have tried calling back and were met with evasive responses when asking for more information, with one user reporting that the caller hung up when pressed. It is strongly advised not to engage with these messages or call back; consider this a parking fine scam.

19 reports analysed View details
023 82011259 86% Risk

Calls from this Southampton and Portsmouth-based number, carried by Gamma Telecom, are linked to energy supplier matters about switching meters. Some reports describe legitimate Utilita interactions, including confirmations from the app. However, the majority describe this as high risk of scam, with automated calls and voicemails pushing a switch when users are already with Utilita. The spam score is 94/100. If you’re unsure, do not engage and contact Utilita via official channels or your account app, then block the number if needed.

18 reports analysed View details
0333 004 6113 87% Risk

Calls from this Gamma Telecom Holdings number appear to be a Barclays scam. Reported as Bank impersonation of Barclays fraud department and flagging fraud on Barclays cards, often via automated robocalls. The pattern is supported by multiple messages asking you to call back, and attempts to extract bank details. With 18 reports, there are no upvotes or downvotes to gauge confidence, but the consistent theme is clear. Red flags include pretending to be your bank, urgent messages, and requests for personal or card information. If you receive such a call, hang up, do not share bank details, and verify directly with Barclays using official channels.

18 reports analysed View details
07441425332 76% Risk

Calls from this UK mobile number are repeatedly described as a DWP survey scam. Reports claim the caller pretends to be doing research or a survey for the Department for Work and Pensions, often about ESA, and sometimes after 7pm or on unusual days like Mother's Day. The carrier is listed as Tismi BV. With 17 reports, the concerns are consistent, though there are no upvotes/downvotes recorded here. Common red flags include unsolicited DWP survey claims, asking for details, and suggesting a follow-up by post. Given the high spam score (79/100), treat as suspicious. DWP survey scam β€” hang up immediately and verify with official DWP channels before sharing any information.

17 reports analysed View details
0151 6792335 89% Risk

Calls from this Liverpool-based number, routed through Core Telecom, are being reported as aggressive scam attempts posing as utility suppliers. Multiple reports say callers claim issues with your postcode or meter readings and press for your account number, previous invoices, or sensitive data. The tone is pushy and, in some cases, nasty. These are commonly used to obtain meter readings or account details. With 16 reports and a spam score of 96/100, the risk level is high risk; there are no upvotes or downvotes noted, so consensus is unclear. If you receive such calls, hang up immediately and do not share information. Verify any concerns with the supplier contact details on your bill or website, and block the number if persistent.

16 reports analysed View details
020 4586 5554 79% Risk

This London number on the Voxbone SA network has received multiple reports identifying it as a scam operation. One report mentions callers claiming to be from a bank, while another warns against calling regarding holiday offers. The consistent pattern across reportsβ€”with most describing straightforward scam activityβ€”suggests this is actively being used for fraudulent calls. Although individual reports haven't accumulated many upvotes yet, the volume and uniformity of warnings is notable. Do not engage with this number or return any calls from it. If you've received a call claiming to be from your bank, hang up and contact your bank directly using the number on your card or their official website.

16 reports analysed View details
020 3745 6091 91% Risk

Calls from this London number, carried by AQL Wholesale, are frequently reported as spam. Multiple reports suggest callers impersonate mobile providers like EE, Three, and O2, claiming they need to block your SIM or offer cheaper contracts. They often ask for personal details such as your email address to gain access to your account. Some users have also experienced aggressive or nonsensical responses when challenging the caller. Given the high spam score and numerous reports, it's best to avoid engaging with this number.

15 reports analysed View details
Protection Guides

Learn to Protect Yourself

NEW

Antivirus Subscription Renewal Scams

Scam emails claiming your Norton or McAfee antivirus has been renewed for hundreds of pounds. You call to cancel, they ask for remote access, and they steal your money.

9 min read · 1 Oct 2026
NEW

Microsoft Tech Support Scam Calls

Cold calls claiming to be from Microsoft saying your computer has a virus. How these scams work, what happens if you give them access, and what to do.

10 min read · 24 Sep 2026
NEW

Courier Fraud

Someone rings pretending to be your bank or the police and sends a courier to collect your bank card. How courier fraud works, who it targets, and what to do.

10 min read · 17 Sep 2026

Accident Claims Cold Calls

Getting calls about a car accident you never had? How accident claims cold calls work in the UK, where they get your number, and how to report them to the ICO.

9 min read · 17 Aug 2026

Caller ID Spoofing

Scammers can make any number appear on your phone, including your bank's real one. How spoofing works, how to spot it, and what to do if your own number is being used.

7 min read · 10 Aug 2026

Crypto Exchange Scam Texts

Fake security alerts claiming to be from Coinbase, Binance or Kraken. How the "call this number" version works and what a real exchange alert looks like.

10 min read · 5 Aug 2026

Fake HMRC Crypto Tax Scam Texts

Texts claiming to be from HMRC asking you to follow a link and complete a crypto declaration. Why they're landing now, what they look like, and how to check your position safely.

11 min read · 5 Aug 2026

Customs Fee Scam Texts

Scam texts claiming you owe customs or import charges on a parcel. How these fake messages work, what real customs fees look like, and what to do if you get one.

9 min read · 3 Aug 2026

How it works

Three simple steps to identify any caller and protect yourself from phone scams

1

Enter the number

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2

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3

Read the reports

Browse detailed reports from real people who received the same call

Scam information and protection tips

Common Scam Types in the UK

How to Protect Yourself

Never share personal details
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Hang up and call back
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