Cloudmersive Validate vs Numverify

Cloudmersive's Phone Number Validation API parses and standardizes global phone numbers, returning line type, E.164/international/national formats, and country data, with client libraries for over 10 languages. A live OPTIONS preflight against its real API host, api.cloudmersive.com/validate/phonenumber/basic, returned Access-Control-Allow-Origin: * (cors reconfirmed "yes"), and a follow-up unauthenticated POST returned a 401 "Invalid API key or exceeded limits" over HTTPS, reconfirming auth "API Key" and https true. Its pricing page offers 600 free calls/month with no expiration alongside a $2,000/month paid tier — freemium.

Numverify (an APILayer product) validates phone numbers against international numbering-plan rules and returns carrier, line type, and location data for 232 countries. Its documented base endpoint, apilayer.net/api/validate, answered a live GET with a 200 JSON body carrying access-control-allow-origin: * — resolving the stored "unknown" cors to "yes" — and rejected the request with an invalid_access_key error, confirming auth "API Key"; the same endpoint also answers on https://, confirming the stored https true even though the docs quote the base URL as plain http://. Its pricing page offers a free-forever plan (100 requests/month) alongside paid Basic/Professional/Enterprise tiers — freemium.