How this works

What a number's page tells you

We count how many different people reported a number, not how many times the button was pressed. One person cannot report the same number twice inside a month, so persistence buys nothing — the count is a measure of how many people were called.

Why recent reports matter more

A report counts for half as much after 90 days, and half as much again after 180. US phone numbers are usually reassigned to somebody new about 45 days after a line is disconnected, so a year-old report increasingly describes whoever held the number before. We drop imported reports entirely after 12 months.

Where the reports come from

From people using this site, and from the Federal Trade Commission's public Do Not Call complaint data. FTC complaints count for less than a report made here, because nobody — including the FTC — has verified them.

What we will not say

We will not tell you who holds a number, and we do not try to find out. We do not publish what a reporter wrote or anything about who they are. A number with many reports is a number many people found unwanted; that is the whole claim.

Caller ID is easy to fake. A heavily reported number often belongs to somebody with no connection to the calls at all, whose number was used as a disguise.

If a number is yours

Remove it yourself. We text a code to the number, and once you confirm it the number reads exactly like one nobody has ever reported.

Some reports do not count

A "wrong number" report is not evidence of an unwanted-call campaign — it usually means the number belongs to an ordinary person whose number looks like a business's. We show those reports, but they never raise a number's status.

Reports arriving in a sudden burst from one place are held back until somebody has looked at them, so a flood cannot move a number's status while it is happening.