# MillionPhones > Verified mobile phone numbers for B2B sales teams. Search by LinkedIn profile URL, get direct-dial mobile numbers instantly. ## Key Pages - [Home](https://millionphones.com/): Landing page with product overview - [Pricing](https://millionphones.com/pricing): Credit-based pricing, free tier with 50 credits - [API Explorer](https://millionphones.com/docs): REST API reference - [Company Directory](https://millionphones.com/directory): Browse companies A-Z with employee phone data - [Blog](https://millionphones.com/blog): Comparison articles and guides - [Privacy Policy](https://millionphones.com/privacy): Data handling and privacy practices - [Terms of Service](https://millionphones.com/terms): Terms governing platform use ## API - OpenAPI spec: https://millionphones.com/v1/openapi.json - Authentication: API key via `X-API-Key` header - Base URL: `https://millionphones.com/api/v1` - Key endpoints: - `GET /api/v1/lookup?linkedin_url={slug}` — look up a phone number (10 credits) - `POST /api/v1/bulk-lookup` — bulk lookup up to 100 URLs - `GET /api/v1/credits` — check remaining credits ## Credits System - 10 credits per phone unlock - Re-unlocking the same record is free - Free tier: 50 credits with yearly refresh - Pro tiers: 500 to 1.2M credits, monthly or yearly billing