Numverify is a phone number validation and lookup REST API that checks any national or international number in real time. One request returns validity, line type, carrier, and location data for numbers in more than 230 countries, normalized to the E.164 international standard.
Developers use it to clean signup forms, filter fake accounts, reduce wasted SMS spend, and enrich customer records with carrier and line type data. The API returns clean JSON, works with any language that can open a URL, and includes code samples for Python, PHP, JavaScript, and more.
Key features include real time validation, carrier detection, line type detection for mobile, landline, and VoIP numbers, E.164 formatting, and a free tier for testing.
Documentation: https://numverify.com/
Verification guide: https://numverify.com/verifying-phone-number
Features
- Real time phone number validation
- Carrier and line type lookup
- E.164 number formatting
- Coverage in more than 230 countries
- Free tier for developers