Cloudmersive Validate vs Phone Validation

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.

AbstractAPI's Phone Validation API checks whether a number is real, and returns its carrier, line type, risk score, and registered location, from a single GET request. The stored url redirected (301) to /api/phone-validation-api, now recorded as the canonical link. A live GET against its real host, phonevalidation.abstractapi.com/v1/, returned Access-Control-Allow-Origin: * (cors reconfirmed "yes") and a 400 validation error demanding the api_key parameter, confirming auth "API Key" over HTTPS. Its landing page advertises 100 free requests with no credit card required, ahead of paid usage tiers — freemium.