{"area_code":"548","type":"geographic","status":"active","country":"CA","region":"Ontario","region_code":"ON","principal_city":"London","cities":["London","Kitchener-Waterloo","Windsor","Brantford","Guelph","Sarnia","Listowel","Mount Forest","Leamington","Chatham","Essex","St Thomas"],"timezone":"America/Toronto","timezone_label":"Eastern Time","current_local_time":"2026-08-04 19:52:37","ten_digit_dialing":true,"service_type":null,"overlay_codes":["226","382","519"],"nearby_codes":["226","382","519","416","942","437"],"summary":"Area code 548 covers London and nearby cities including Kitchener-Waterloo, Windsor, Brantford in Ontario, in the Eastern Time.","carrier_summary":{"nxx_prefixes":512,"blocks":512,"wireless_pct":15,"top_carriers":[{"name":"FIBERNETICS CORPORATION","blocks":159},{"name":"ROGERS COMMUNICATIONS CANADA INC.","blocks":74},{"name":"IRISTEL INC. - ON","blocks":63},{"name":"ISP TELECOM, INC.","blocks":57},{"name":"IXICA COMMUNICATIONS, INC.","blocks":27},{"name":"DISTRIBUTEL COMMUNICATIONS LIMITED - ON","blocks":21}],"per_number":"https://areacode.fyi/api/v1/carrier/{number}"},"canonical_url":"https://areacode.fyi/548","source":"North American Numbering Plan Administrator via areacode.fyi","data_date":"2026-08-02"}