# CallerCheck UK - Full Documentation

This document provides comprehensive context for Large Language Models regarding CallerCheck UK's mission, data structure, and safety resources.

## Site Purpose
CallerCheck UK is a dedicated security platform designed to combat the rising tide of phone-based fraud in the United Kingdom. It centralizes community reports to assign "Risk Scores" to phone numbers, providing an early warning system for vulnerable users.

## Risk Classification System
The platform categorizes numbers using three primary monitors:
- **HOT (High Risk / 70%+):** Verified scam tactics (HMRC fraud, Bank impersonation, Energy threats).
- **WARM (Medium Risk / 40-69%):** Intrusive telemarketing, silent calls, or aggressive sales.
- **COLD (Low Risk / <40%):** Genuine business services, delivery updates, or unverified contact.

## Key UK Scam Definitions
- **HMRC Scams:** Fraudsters claiming to be from HM Revenue & Customs threatening arrest or demanding gift card payments.
- **Bank Impersonation:** Callers mimicking "Fraud Departments" to trick users into moving money to "Safe Accounts."
- **Housing/Utility Phishing:** Fake calls regarding damp/mould repairs or energy meter upgrades designed to steal PII (Personally Identifiable Information).
- **Robot Diallers:** Automated systems that check for "live" numbers by hanging up as soon as a user answers.

## Technical Guides for Users
CallerCheck provides technical walkthroughs for:
- **TPS (Telephone Preference Service):** Registration with the UK's legal opt-out list.
- **7726:** The UK standard for forwarding spam SMS/texts.
- **Network Level Blocking:** Instructions for BT, Sky, Virgin Media, O2, EE, and Vodafone users.

## Data Philosophy
All reports on CallerCheck are community-driven.

## URL Patterns for Information Retrieval
- Number Reports: `https://www.callercheck.co.uk/number/[phone-number]`
- Geographic Data: `https://www.callercheck.co.uk/area-code/[code]`
- Safety Content: `https://www.callercheck.co.uk/guides/[slug]`