{"input":"3123761631","is_valid_nanp":true,"e164":"+13123761631","formatted":"(312) 376-1631","country_code":"+1","area_code":"312","region":"Illinois","principal_city":"Chicago","timezone":"America/Chicago","current_local_time":"2026-08-15 01:40:34","note":"An area code only shows where a number is registered, not who is calling. Caller ID can be spoofed, so the code alone is not proof a call is local, safe, or fraudulent.","area_code_url":"https://areacode.fyi/312","source":"North American Numbering Plan Administrator via areacode.fyi","data_date":"2026-08-02"}