Area Code +63-78-(6428800...6428899) located in Mallig, 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 : 6428800 Subscriber Number To : 6428899 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 : Mallig Timezone : Asia/Manila Coordinated Universal Time : +08:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 9 Latitude : 17.2000 Longitude : 121.6200 ‹ previous : +63-78-(6420000...6427999) next › : +63-78-(6428900...6428999) Dialling Instructions For trunk calls: 0 78 6428800 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 63 78 6428800 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 6428800 ~ 6428899 (Count: 100) Example: +63-78-6428800 / 0063-78-6428800 (078-6428800 / 0-78-6428800) +63-78-6428801 / 0063-78-6428801 (078-6428801 / 0-78-6428801) +63-78-6428802 / 0063-78-6428802 (078-6428802 / 0-78-6428802) +63-78-6428803 / 0063-78-6428803 (078-6428803 / 0-78-6428803) +63-78-6428804 / 0063-78-6428804 (078-6428804 / 0-78-6428804) ...+63-78-xxxxxxx / 0063-78-xxxxxxx (078-xxxxxxx / 0-78-xxxxxxx) ...+63-78-6428895 / 0063-78-6428895 (078-6428895 / 0-78-6428895) +63-78-6428896 / 0063-78-6428896 (078-6428896 / 0-78-6428896) +63-78-6428897 / 0063-78-6428897 (078-6428897 / 0-78-6428897) +63-78-6428898 / 0063-78-6428898 (078-6428898 / 0-78-6428898) +63-78-6428899 / 0063-78-6428899 (078-6428899 / 0-78-6428899)