numverify
Global phone number validation and lookup JSON API.
Numverify is a REST API for validating and looking up phone numbers in real time. Passing a national or international number to the request URL returns a JSON response indicating validity along with country, location, carrier, and line type, covering 232 countries. Connections are secured with 256-bit HTTPS encryption.
The service draws on regularly updated international numbering plans for format validation, carrier detection, line type detection, and location lookup. Results are delivered in JSON, with support for JSONP callbacks and Access-Control headers. An interactive documentation console lets users try requests after signing up, and the account dashboard provides daily and monthly usage statistics with low-balance notifications. A Zapier integration connects Numverify to other apps, including Google Forms.
Numverify is aimed at developers, SaaS product teams, sales and marketing teams, and e-commerce operations that need to clean phone data, verify numbers at sign-up or order creation, and reduce undelivered messages. Packaging is usage-based: a free plan for non-commercial use with a monthly API request allowance, paid Basic, Professional, and Enterprise editions with larger request volumes and commercial use, and a custom plan for unlimited requests. Monthly and annual billing are available, with overage fees applying once the allowance is exhausted. An optional Platinum Support add-on provides dedicated account management and priority handling.
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