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Phone – Free-tier APIs
8 Free-tier APIs in the category Phone. Free public web APIs that developers and AI agents can call. Entries come from the open public-apis list; each link was checked automatically (HTTP status) on the date shown, which says the site responded, not that the API is good.
Page 1 of 1 · 8 listings
Cloudmersive Validate
Validate international phone numbers
Numlookup
Phone number validation and carrier lookup API with global coverage
Numverify
Phone number validation
Phone Specification
Rest Api for Phone specifications
Phone Validation
Validate phone numbers globally
PlaceCall
AI agent places phone calls to US businesses and returns the outcome, transcript and recording
Veriphone
Phone number validation & carrier lookup
VeriRoute Intel
CNAM caller ID, carrier/LRN lookup and spam scoring for North American phone numbers
Page 1 of 1 · 8 listings