Twilio Phone Number Validation API

The Phone Validation Dream Team!
API Services Available via Twilio Add-on Marketplace
RPV Turbo

RPV Turbo is the most thorough connected/disconnected service available. RPV Turbo checks as many as five telco data points, including the billing record for the larger mobile companies.
RPV Scrub

RPV Scrub is our best value and performs a quick scrub of the numbers hitting two data points on the telco switch. It is a great, fast product but will leave 3 to 5% of the numbers with a disposition of “unknown.”
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