Area Code +63-78-(6820000...6829999) located in Santiago City, 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 : 6820000 Subscriber Number To : 6829999 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 : Santiago City Timezone : Asia/Manila Coordinated Universal Time : +08:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 9 Latitude : 16.7100 Longitude : 121.5500 ‹ previous : +63-78-(6720000...6729999) next › : +63-78-(6925000...6925999) Dialling Instructions For trunk calls: 0 78 6820000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 63 78 6820000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 6820000 ~ 6829999 (Count: 10,000) Example: +63-78-6820000 / 0063-78-6820000 (078-6820000 / 0-78-6820000) +63-78-6820001 / 0063-78-6820001 (078-6820001 / 0-78-6820001) +63-78-6820002 / 0063-78-6820002 (078-6820002 / 0-78-6820002) +63-78-6820003 / 0063-78-6820003 (078-6820003 / 0-78-6820003) +63-78-6820004 / 0063-78-6820004 (078-6820004 / 0-78-6820004) ...+63-78-xxxxxxx / 0063-78-xxxxxxx (078-xxxxxxx / 0-78-xxxxxxx) ...+63-78-6829995 / 0063-78-6829995 (078-6829995 / 0-78-6829995) +63-78-6829996 / 0063-78-6829996 (078-6829996 / 0-78-6829996) +63-78-6829997 / 0063-78-6829997 (078-6829997 / 0-78-6829997) +63-78-6829998 / 0063-78-6829998 (078-6829998 / 0-78-6829998) +63-78-6829999 / 0063-78-6829999 (078-6829999 / 0-78-6829999)