About WhoCalledSG
Know who’s calling before you pick up.
Ever hesitated to pick up a call from an unknown number, or wondered whether to call back a missed one? WhoCalledSG is a free site where people in Singapore tag the numbers that call them, so the next person knows what to expect.
What we stand for
Free for everyone
No sign-up, no fees. Ads keep the site running.
Built by the community
Every tag and comment comes from someone who got the same call.
Fair to number owners
Reports are labelled as unverified, and anyone can ask us to review a report about their number.
Careful with data
No accounts, no names. We keep only what we need to run the site and stop abuse.
Questions
Can’t find your answer? Contact us.
Is this site really free to use?
Yes, completely free. We hope you’ll help others by tagging the numbers that call you.
How accurate are the results?
Most of what you see comes from other users, so it can be wrong. Always check a caller’s identity yourself before you share anything sensitive.
How is “Reported as” decided?
It shows the tag the most people chose for that number, and how many people chose it. One person can tag a number once.
A report about my number is wrong. What can I do?
Use “Dispute a report” on the number’s page. Our team reviews every request within 7 business days.
Can my business get a verified badge?
Yes. Use “Claim as a business” on your number’s page and send proof that the number is yours.
Can I suggest new tags or features?
Please do, through the Contact page.