Line TracePhone Number Validation & Lookup — via Numverify
no key set
Access Key
Stored only in this browser's local storage — never sent anywhere but Numverify.
Get a free key at
numverify.com (100 lookups/mo free).
Include a country code (e.g. +1, +44) for best results — or add &country_code=US logic isn't needed, the API infers it from the leading +.