Area Code +56-55-(9720000...9729999) located in Antofagasta, Región de Antofagasta (AN), more detail is as below. Place International Dialing Code : 56 National Destination Code : 55 Subscriber Number From : 9720000 Subscriber Number To : 9729999 National Destination Code Length : 2 Uses National Destination Code : Yes National Significant Number Length : 9 Number Type : G (Geographic Land Line, Fixed Line) Carrier Name : Telestar S.A. Click here to buy Chile Area Code Database Other Information Language Code : es (Spanish) Country Number : 152 (Chile) Country Code : CL (Chile) Region Code : AN Region Name : Región de Antofagasta City : Antofagasta Timezone : America/Santiago Coordinated Universal Time : -04:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 9 Latitude : -23.6300 Longitude : -70.3900 ‹ previous : +56-55-(9710000...9719999) next › : +56-55-(9730000...9739999) Dialling Instructions For trunk calls: - 55 9720000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 56 55 9720000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 9720000 ~ 9729999 (Count: 10,000) Example: +56-55-9720000 / 56-55-9720000 (55-9720000 / -55-9720000) +56-55-9720001 / 56-55-9720001 (55-9720001 / -55-9720001) +56-55-9720002 / 56-55-9720002 (55-9720002 / -55-9720002) +56-55-9720003 / 56-55-9720003 (55-9720003 / -55-9720003) +56-55-9720004 / 56-55-9720004 (55-9720004 / -55-9720004) ...+56-55-xxxxxxx / 56-55-xxxxxxx (55-xxxxxxx / -55-xxxxxxx) ...+56-55-9729995 / 56-55-9729995 (55-9729995 / -55-9729995) +56-55-9729996 / 56-55-9729996 (55-9729996 / -55-9729996) +56-55-9729997 / 56-55-9729997 (55-9729997 / -55-9729997) +56-55-9729998 / 56-55-9729998 (55-9729998 / -55-9729998) +56-55-9729999 / 56-55-9729999 (55-9729999 / -55-9729999)