Helpful guides on how to spot and prevent phone scammers
Stay informed with practical tips from CallerCheck on identifying and avoiding phone scams to protect yourself and your information.
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Find phone number scam scores
Check the scam scores of phone numbers with CallerCheck to stay informed and protect yourself from potential fraud.
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Find and block nuisance calls
Identify unknown numbers and protect yourself from unwanted calls with CallerCheck's reverse phone lookup service.
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How to use CallerCheck
Go to CallerCheck.co.uk and lookup an existing phone number to see the current spam score, and previous reviews from real people who have been called by that number. Alternatively, type in the number into the search box to start writing a report yourself.
1 View the number spam scoring
On each number profile page is a unique algorithmic score. It shows how likely the phone number is a scam, attempted scam, or trying to lure you to something dodgy. Always make your own assessment and if you have experience receiving a call from a phone number then add your own review. Each review contributes to the overall phone number score to help save others from being scammed in the future.
2 Vote on previous reports
Other real people have added comments explaining their experience with a call from any given phone number. Vote up or down depending on your own experience, to help others find useful information and previous reports.
3 Read guides and stay ahead of the game
CallerCheck has put together a whole bunch of anti-scam phone number guides on how to stay safe when receiving UK phone calls. These include common call types such as Caller ID spoofing and Crypto Phone Scams.
4 Check which areas of the UK are most affected
Use the handy area codes tool to search your area to see how common the phone and text scams have been recently. This is especially important if you have vunerable family members living in the area. Give them a heads up, share the guides, stay safe from scams.
CallerCheck FAQs
Is CallerCheck free to use?
Yes, running phone number lookups and reading caller reports on CallerCheck is completely free. Anyone can check a UK number, view its risk level and read the safety guides without paying a fee or creating an account.
How does CallerCheck work?
You type a UK landline or mobile number into the search box to view its risk level and recent call logs. The results show whether other people rated the caller as safe, suspicious or spam, accompanied by notes explaining what the caller wanted.
How does CallerCheck calculate its spam ratings?
The risk rating blends the safe, suspicious and spam feedback submitted by people who received a call from that number. Numbers that have only gathered a few submissions are held close to neutral, and every report goes through moderation before it changes the overall percentage.
Can I report a suspicious number on CallerCheck?
Yes, anyone who picks up a nuisance or suspicious call can submit a report directly through the site. Every submission is screened by moderators before it counts towards the public rating, which prevents false or abusive entries from skewing the results.
Does CallerCheck use artificial intelligence?
CallerCheck uses artificial intelligence solely to read approved user reports and summarise the patterns behind a number, such as common impersonation tactics. The automated tool does not generate the risk percentage itself, which relies entirely on moderated submissions from people who took the call.
More ways to save at CallerCheck
Use the free tools first: start with the number lookup, spam score and community reports before you pay for anything connected to a missed call or unexpected message. CallerCheck lets you check UK landline and mobile numbers for free, so you can see how a number has been rated and read what people say happened on similar calls. That is the best first step because it costs nothing and may stop you paying for a service, ringing back a suspicious number or acting on a false request.
Read the protection guides: the long form guides are also free, and they are useful when the issue is bigger than one phone number. The guide topics listed on CallerCheck include courier fraud, caller ID spoofing, safe account push payment scams, accident claims cold calls, fake HMRC texts and customs fee scam texts. Use them when you want to understand the pattern behind a call or text, especially if the message is trying to rush you into giving details, making a payment or calling another number.
Contribute a report: adding your own account of a call does not cost anything, and it strengthens the information you may rely on later. A short report on what the caller claimed, what they asked for and how the call ended gives the next person more context than a risk percentage alone. It also helps build a clearer picture when several people are being contacted from the same number.
Spotting scam and nuisance calls with CallerCheck
The most reported call types across the UK right now centre on deception and urgency. Reports logged on CallerCheck show frequent activity around impersonation calls, direct requests for personal details and suspicious messages linked to WhatsApp scam reports. Criminals frequently pose as banking fraud departments warning of unauthorised card charges or pretend to offer quick employment, sending fake transaction alerts or bogus job offers designed to prompt an immediate reaction. The platform also monitors high volumes of energy and utility scams relating to meter installations, tariffs or energy refunds, alongside intrusive telemarketing and automated robocalls.
To help you evaluate an unexpected call, CallerCheck presents number risk as a percentage and a temperature rating, flagging high risk callers clearly so you know whether to answer, reject or block the contact. Even when a phone displays a recognisable organisation name or a local dialling code, caution is essential. Fraudsters regularly use caller ID spoofing technology to copy genuine company switchboards or trusted numbers, meaning the details shown on your screen provide no guarantee of the caller's actual identity.
Protecting your accounts requires a few firm personal habits. Legitimate organisations and banks will never ring to ask for a PIN, online banking password or full account details. When an unsolicited caller demands information or claims money must be moved, end the conversation straight away. Ring the organisation back on a verified number found on their official website or on the back of your payment card, rather than any contact number provided during the call or left in a text message. Running a quick lookup on CallerCheck gives clarity on recent activity from that number, and confirming suspected fraud with Action Fraud ensures UK authorities have the necessary evidence to pursue criminal networks.
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