City Code Antofagasta 55 Arica 58 Calama 55 Chilln 42 Concepcin 41 Copiac 52 Coquimbo 51 Coyhaique 67 Curic 75 Iquique 57 La Serena 51 Linares 73 Los Andes 34 Los Angeles 43 Osorno 64 Ovalle 53 Puerto Montt 65 Punta Arenas 61 Quillota 33 Rancagua 72 San Antonio 35 San Felipe 34 San Fernando 72 Santiago (Metropolitan Region) 2 Talcahuano 41 Talca 71 Temuco 45 Valdivia 63 Valparaso 32 Via del Mar 32 Chile's telephone service has a multicarrier system, so the IDD prefix depends on which international (and national) carrier company is used (ask for rates before placing the call). The IDD prefix is 1YZ (for domestic calls) and 1YZ0 (for international calls), where 1YZ is known as the carrier code. In July 2002, mobile phone numbers in Chile were converted from seven to eight digits, beginning with either 8 or 9.