Telephone

What Telephone is

Telephone is an API for validating, verifying and enriching phone numbers in real time. It detects fake, invalid and disposable numbers, identifies carriers and line types such as mobile, landline, VoIP and toll free, and can return country, region, city and timezone data. Telephone states that it supports more than 190 countries. Developers can check one number through a GET endpoint or submit bulk validations through POST. Any HTTP client can call the service, so no SDK is required. The quickstart directs users to sign in with Google to obtain a default API key. Telephone claims sub-50ms responses, infrastructure scaling to 10,000 requests per second, 99.99% uptime and enterprise SLAs. Its product page says interactions use 256-bit SSL encryption and claims SOC 2 Type II and GDPR compliance. The Pro plan includes validation, carrier and line-type detection, location data, risk scoring and real-time API access at €24.99 per month after a seven-day trial; a card is required to start.