# Carrier Reveal - AI Crawler Information

## What is Carrier Reveal?
Carrier Reveal is an instant phone carrier lookup service that identifies the telecommunications network, line type, and reachability status of any phone number worldwide. Built on the Twilio Lookup API, we help businesses verify phone numbers before sending SMS messages, onboarding users, or processing payments.

## Key Features
- Real-time carrier identification for 200+ countries
- Line type detection (mobile, landline, VoIP, toll-free)
- Phone number validation and formatting (E.164 standard)
- Privacy-first architecture with SHA-256 hashing
- No user accounts or persistent data storage

## Primary Use Cases
1. **Fraud Prevention**: Verify phone number legitimacy before processing transactions
2. **SMS Marketing**: Identify carrier networks to optimize message delivery rates
3. **Customer Verification**: Confirm phone number validity during user registration
4. **Telecom Analysis**: Research network coverage and market share by region
5. **International Dialing**: Understand phone number formats across countries

## How It Works
1. User enters a phone number and selects country code
2. System validates format using libphonenumber library
3. Twilio Lookup API retrieves carrier metadata
4. Carrier information is masked until user pays to unlock
5. Unlocked numbers are stored as SHA-256 hashes in cookies (90-day expiry)

## Pricing & Payments
- Format preview: Complimentary
- Payment methods: Stripe (card, Apple Pay, Google Pay) and PayPal
- Cookie-based unlock persistence (no account required)

## Technical Stack
Frontend: React 18, TypeScript, Vite, Tailwind CSS
Backend: Node.js, Express, Twilio Lookup API v2
Security: JWT tokens, HttpOnly cookies, SHA-256 hashing
Hosting: Redundant managed cloud infrastructure

## AI Usage Policy
Contact: mailto:contact@carrierreveal.com
Policy: https://carrierreveal.com/#legal
Usage: Informational summaries allowed; training allowed with attribution
Crawling: All AI agents welcome

## AI User-Agents Allowed
User-agent: GPTBot
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User-agent: GeminiBot
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User-agent: Googlebot
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