About CheckThatCall

CheckThatCallhelps people answer a simple question: “Who called me?” We provide a free lookup tool where users can search US phone numbers and view community-generated spam scores based on predefined call tags — not free-text comments.

Our goal is to reduce the impact of robocalls, telemarketing calls, and phone scams by making caller reputation information easy to find and share responsibly.

• Users search a US phone number on our homepage.
• Our system stores the number and tracks how often it is searched.
• Community members submit structured reports using predefined tags (e.g., Spam, Robocall, IRS Scam).
• We generate readable summary reports from aggregated tags to help others make informed decisions.

Transparency matters for a directory like CheckThatCall. Below is a plain-language overview of where our data comes from, how it is processed, and what we publish publicly.

Data sources. Our directory combines three types of signals:

• User searches — when someone looks up a US number, we record the E.164 phone number, increment a search counter, and may create a listing if one does not exist yet.
• Community reports — visitors submit structured votes with a rating (Safe, Spam, Scam, etc.) and a predefined category tag such as Robocall, Telemarketing, or IRS Scam. We do not accept free-text comments.
• Public regulatory data — we periodically import complaint records from the U.S. Federal Trade Commission (FTC) Do Not Call (DNC) Registry public dataset. These records are mapped to the same structured tag system and labeled as imported public data, not verified individual complaints.

Spam score calculation. Each phone listing shows a spam score from 0 to 100. The score is recalculated automatically whenever a new community report is added. It reflects the share of reports marked Spam or Scam versus the total number of reports for that number. A score of 75 means roughly three-quarters of reports flagged the caller as unwanted or fraudulent. This is a statistical estimate from aggregated tags — not a carrier verification, legal finding, or guarantee of caller intent.

Report integrity. To reduce abuse, each reporter is stored as a one-way hashed identifier (not a name or email). Duplicate reports from the same source for the same number are rejected. Search and voting endpoints include rate limits to deter automated manipulation. See our Privacy Policy for details on what we collect.

What we publish. Not every lookup becomes a public, indexable page. A phone listing enters our sitemap and search-engine index only after it has at least one community report or has been searched independently by multiple users. Area-code hub pages require a minimum number of reported numbers before they are promoted broadly.

Advertising (Google AdSense). Ads use stricter rules than indexing: at least two community reports, multiple searches, indexable status, and sufficient editorial content on the page. We show at most one ad unit per page, never on legal or policy pages, and only after cookie consent. See our Advertising Policy.

Generated summaries. Narrative text on phone pages (for example, “This number has been reported as a robocall”) is generated from aggregated tag counts and search statistics. It is editorially templated for readability and always shown alongside raw breakdowns and disclaimers.

Corrections and removal. Phone number owners or authorized representatives may request review or removal of a listing. See our Content Removal page for the process and required information.

CheckThatCall is not a law enforcement agency, carrier, or consumer protection authority. We do not verify individual reports and we do not guarantee the accuracy of any lookup result. Reports reflect community opinions, not legal findings.

Questions or partnership inquiries: contact@checkthatcall.com

Website: https://www.checkthatcall.com

We publish free educational articles to help US consumers handle unwanted calls responsibly:

• How to Spot a Robocall — warning signs, spoofing, and when to hang up.
• What to Do After a Spam Call — blocking, reporting, and account protection.

Browse all guides on the Guides page.