Reverse-geocode latitude/longitude to NANP (North American) telephone area codes
Takes a NANP phone number and returns it in a variety of formats.
Text file with all possible US based phone numbers. Useful for WiFi and other testing...
Zero-dependency E.164 storage helpers: normalize, strict parse, national length checks, multi-locale country picker data (TypeScript, ESM+CJS).
How long would it take your computer to precompute SHA256 of all North Amer. phone numbers?
A simple Python program to validate NANP phone numbers with international number support
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