Area Code +63-78-(6547000...6547999) located in San Mariano, Isabela (ISA), more detail is as below. Place International Dialing Code : 63 International Prefix : 00 National Prefix : 0 National Destination Code : 78 Subscriber Number From : 6547000 Subscriber Number To : 6547999 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 : Philippine Long Distance Telephone Company (PLDT) Click here to buy Philippines Area Code Database Other Information Language Code : en (English) Country Number : 608 (Philippines) Country Code : PH (Philippines) Region Code : ISA Region Name : Isabela City : San Mariano Timezone : Asia/Manila Coordinated Universal Time : +08:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 9 Latitude : 16.9800 Longitude : 122.0200 ‹ previous : +63-78-(6545000...6545999) next › : +63-78-(6620000...6629999) Dialling Instructions For trunk calls: 0 78 6547000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 63 78 6547000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 6547000 ~ 6547999 (Count: 1,000) Example: +63-78-6547000 / 0063-78-6547000 (078-6547000 / 0-78-6547000) +63-78-6547001 / 0063-78-6547001 (078-6547001 / 0-78-6547001) +63-78-6547002 / 0063-78-6547002 (078-6547002 / 0-78-6547002) +63-78-6547003 / 0063-78-6547003 (078-6547003 / 0-78-6547003) +63-78-6547004 / 0063-78-6547004 (078-6547004 / 0-78-6547004) ...+63-78-xxxxxxx / 0063-78-xxxxxxx (078-xxxxxxx / 0-78-xxxxxxx) ...+63-78-6547995 / 0063-78-6547995 (078-6547995 / 0-78-6547995) +63-78-6547996 / 0063-78-6547996 (078-6547996 / 0-78-6547996) +63-78-6547997 / 0063-78-6547997 (078-6547997 / 0-78-6547997) +63-78-6547998 / 0063-78-6547998 (078-6547998 / 0-78-6547998) +63-78-6547999 / 0063-78-6547999 (078-6547999 / 0-78-6547999)