Numlookup vs Phone Validation

Numlookupapi.com (an Everapi GmbH product) validates phone numbers and returns formatting, country, location, carrier, and line type via a REST endpoint that takes the number as a path parameter. A live OPTIONS preflight against its real API host, api.numlookupapi.com/v1/validate/, returned access-control-allow-origin echoing the request Origin plus access-control-allow-credentials: true, resolving the stored "unknown" cors to "yes"; a follow-up unauthenticated GET returned a 401 with www-authenticate: Key and a missing_api_key JSON error, confirming auth "API Key" over HTTPS. Its pricing page offers a Free plan (100 requests/month) alongside paid Basic/Pro/Scale tiers — 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.