About CallerCheck
Helping UK residents identify unknown callers and stay safe from phone scams.
Making Phone Safety Accessible to Everyone
Every day, millions of UK residents receive unwanted calls from scammers, telemarketers, and fraudsters. These calls aren't just annoying—they cost victims over £1.2 billion every year and cause immense emotional distress.
CallerCheck was built to fight back. We believe everyone deserves to know who's calling before they answer, and that protecting yourself from phone fraud shouldn't cost a penny.
Our community-driven platform empowers people to share their experiences, warn others about scam numbers, and make informed decisions about unknown callers.
Community-Powered Protection
Search
Look up any UK phone number to see reports from our community. No registration needed.
Report
Share your experience with unknown callers. Mark numbers as spam or safe to help others.
Protect
Make informed decisions about answering calls. Together, we're building a safer phone network.
What CallerCheck Offers
Phone Number Lookup
Search any UK phone number to see community reports, spam scores, and caller information. Works with landlines, mobiles, and special numbers.
Spam Scores
Our spam scores are calculated from real community reports, giving you an instant indication of whether a number is trustworthy or suspicious.
Community Reports
Read detailed reports from real people who've received calls from the same number. Learn what callers said and whether they're legitimate.
Area Code Directory
Identify where calls are coming from with our comprehensive UK area code directory. Know if a call is local or from across the country.
Safety Guides
Learn how to protect yourself with our expert guides on blocking calls, recognising scams, and reporting nuisance callers to authorities.
Scam Alerts
Stay informed about the latest phone scams targeting UK residents. Know what to look out for before you receive that suspicious call.
What We Stand For
Privacy First
We don't require accounts, don't track you, and never sell your data. Your privacy matters.
Community Driven
Our data comes from real people sharing real experiences. Together, we're stronger.
Always Free
Phone safety is a right, not a privilege. CallerCheck will always be free to use.
The Scale of the Problem
Phone Scams Affect Everyone
Phone scams aren't just an inconvenience—they're a serious threat to people's financial security and emotional wellbeing. Fraudsters are becoming more sophisticated, using technology to spoof caller IDs and impersonate trusted organisations.
The impact goes beyond money. Victims often experience shame, anxiety, and a loss of trust. Many are reluctant to answer the phone at all, potentially missing important calls from doctors, family, and legitimate businesses.
CallerCheck exists to shift the balance of power back to ordinary people. By sharing information, we can make it harder for scammers to operate and easier for everyone to stay safe.
Frequently Asked
Is CallerCheck really free?
Where does your data come from?
Can I report a number anonymously?
Ready to Check a Number?
Search our database of community reports to find out who's been calling you.