Numlookup
Phone number validation and carrier lookup API with global coverage
Phone · API key · HTTPS
Phone APIs
7 API records with directory-reported descriptions, access facts, and source links.
Numverify
Phone number validation
Phone · API key · HTTPS
Cloudmersive Validate
Validate international phone numbers
Phone · API key · HTTPS
Phone Specification
Rest Api for Phone specifications
Phone · No auth · HTTPS
Phone Validation
Validate phone numbers globally
Phone · API key · HTTPS
Veriphone
Phone number validation & carrier lookup
Phone · API key · HTTPS
VeriRoute Intel
CNAM caller ID, carrier/LRN lookup and spam scoring for North American phone numbers
Phone · API key · HTTPS