How the check works
We look the number up in public complaint data published by the Federal Trade Commission (Do Not Call reports) and the Federal Communications Commission (consumer complaints about unwanted calls). The datasets are prepared ahead of time, so the lookup itself does not contact anyone.
If the number appears, we count the reports, find the first and last report dates, list the kinds of calls people described and combine volume, recency and call type into a score from 0 to 100.
Reading the result
Many reports in a short period, with the same call type, is the pattern of a robocall or scam campaign. A single old report is weak evidence on its own.
The score is a summary of those reports, not a verdict. The breakdown shows how much came from volume, recency and call type so you can judge for yourself.
This tool cannot tell you who owns the number. Public complaint data has no caller names, and we do not look up people.
Limits worth knowing
Complaints are unverified reports from consumers. A number with none is not proof it is safe, and a number with many may have been reassigned to a new owner since.
Coverage follows US FTC and FCC data, so numbers from other countries will rarely appear. The free tool checks one number at a time with a strict per-visitor limit.
Frequently asked questions
Does this tell me the name of the person who called?
No. The data we use contains complaints about numbers, not who owns them. We do not do reverse phone lookups of people.
The result says no complaints. Is the call safe?
Not necessarily. New scam numbers appear before anyone has reported them, and spoofed numbers can belong to someone else. If a caller asks for money, codes or personal details, hang up and call the organization back on a number you find yourself.
Where do the reports come from?
From the public FTC Do Not Call complaint data and the public FCC consumer complaint data. The result lists the sources used and when each dataset was built.
How should I report a call?
Use the official channels: the FTC at reportfraud.ftc.gov or the FCC consumer complaint center. Your report is what makes this data useful to others.