Cloudmersive Validate vs Phone Specification

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.

Phone Specs API is an open-source, keyless wrapper around GSMArena's device database, returning brand lists, per-phone specifications, and search results as JSON — maintained by a single developer (Azhari Muhammad M) and deployed on Vercel. Both README-documented custom domains (api-mobilespecs.azharimm.dev for v1, phone-specs-api-2.azharimm.dev for v2) no longer resolve, but the underlying Vercel deployment is still live and reachable directly: its root endpoint returned a 200 JSON payload confirming auth "None" and https true, and a live OPTIONS preflight carried Access-Control-Allow-Origin: * (cors reconfirmed "yes"); the /brands and /latest routes intermittently 500 with a 429 from the upstream GSMArena scrape target, a source-side rate-limit rather than the API itself being down.