{"input":"8573371208","is_valid_nanp":true,"e164":"+18573371208","formatted":"(857) 337-1208","country_code":"+1","area_code":"857","region":"Massachusetts","principal_city":"Boston","timezone":"America/New_York","current_local_time":"2026-08-14 15:54:31","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/857","source":"North American Numbering Plan Administrator via areacode.fyi","data_date":"2026-08-02"}