Most reverse lookup sites tell you nothing about where their information comes from. We would rather you knew, because it is the only way to judge how much weight to give any single page on this site. Here is every dataset behind USACallerLookup, how often it changes, and what we deliberately leave out.
Telephone numbering data
The city, state, carrier, and line type shown on a number page come from the North American Numbering Plan, the public registry that governs how US phone numbers are allocated. We hold 197,876 prefix records covering 364 area codes, sourced from NANPA’s published area code reports and the Local Calling Guide prefix database.
A word on what that data actually means. Numbers are assigned in blocks of 10,000 to a carrier at a specific rate center, which is a telephone company billing area rather than a city boundary. So a number listed as Santa Monica was allocated to a switch serving Santa Monica. It does not follow that the person holding it lives there today. Mobile numbers travel with their owner, and number portability lets people keep a number when they change carriers or move across the country. Treat the location as where the number originated, not where the caller is sitting.
We refresh this registry periodically, since new prefixes get activated and area codes split or overlay.
Complaint records
When a page shows that a number appears in complaint records, that comes from the Federal Trade Commission. The FTC publishes the unwanted-call complaints consumers file against the National Do Not Call Registry as public records, in a new file every weekday. We download that file daily and update our figures from it.
For each number we track, we aggregate:
- how many complaints have been filed against it
- how many separate states those complaints came from
- what consumers described the call as, such as debt reduction, medical, or warranty
- how many complaints flagged a recorded message or robocall
- the first and most recent dates the number appeared in a complaint file
We do not add to these numbers, editorialize them, or estimate anything. If our page says a number drew 34 complaints across 12 states, that is what the FTC’s own records say. The complaint text itself is not published by the FTC, so we report the categories consumers selected rather than anything they wrote.
Why a complaint record is not proof
Caller ID is trivially easy to forge. Scam operations routinely display a number that belongs to somebody else, often a real small business or a private line in the area code they are targeting. This is called spoofing, and it means a number with a long complaint history may belong to somebody who has done nothing except answer angry callbacks.
That is why we word these pages as “appears in complaint records” rather than accusing anyone. If a number is yours and it has been spoofed, our Remove My Number form is the fastest way to reach us, and we will take the page down.
Visitor reports
Anyone can leave a report on a number page describing the call they received. These are visitor opinions, not verified facts, and we label them that way. We never write them ourselves and we do not seed pages with invented reports to make them look busy. A page with no reports says it has no reports.
Reports go through moderation. Anything containing a link, an email address, or a phone number is held for manual review before it appears, which keeps the pages clear of spam and of attempts to publish somebody’s personal contact details. We remove reports that name individuals, make threats, or read as retaliation rather than a description of a call.
What we do not publish
This is a deliberate choice, and it is the main thing separating us from a people-search site. USACallerLookup does not publish the name, age, home address, relatives, employer, or criminal record of the person behind a phone number. We show the registry facts about the number and what the public complaint record says about calls from it. Nothing else.
Some pages link to third-party background report services, and we earn a commission when someone signs up through those links. That relationship is spelled out in our Affiliate Disclosure. Those are separate companies with their own databases and their own privacy practices, and we have no control over what they show you.
How our articles are made
Number pages and area code pages are generated from the datasets above, so their figures are always current with our most recent data import rather than frozen at whatever they were on the day the page first appeared.
Guides and area code articles are written and edited in-house. When we cite a figure, we cite the source. When the underlying data moves enough to change the advice, we revise the article rather than leaving a stale page up. If we get something wrong, tell us on the contact page and we will correct it.
Legal limits on how you can use this
USACallerLookup is not a consumer reporting agency under the Fair Credit Reporting Act, and the information here is not a consumer report. You may not use this site to make decisions about someone’s eligibility for credit, insurance, employment, housing, or tenancy. Those decisions require an FCRA-compliant provider, which we are not. The full terms are in our Terms and Conditions.