Area Code +63-78-(8160000...8169999) located in Diffun, Quirino (QUI), more detail is as below. Place International Dialing Code : 63 International Prefix : 00 National Prefix : 0 National Destination Code : 78 Subscriber Number From : 8160000 Subscriber Number To : 8169999 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 : QUI Region Name : Quirino City : Diffun Timezone : Asia/Manila Coordinated Universal Time : +08:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 9 Latitude : 16.6000 Longitude : 121.4700 ‹ previous : +63-78-(8150000...8159999) next › : +63-78-(8170000...8179999) Dialling Instructions For trunk calls: 0 78 8160000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 63 78 8160000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 8160000 ~ 8169999 (Count: 10,000) Example: +63-78-8160000 / 0063-78-8160000 (078-8160000 / 0-78-8160000) +63-78-8160001 / 0063-78-8160001 (078-8160001 / 0-78-8160001) +63-78-8160002 / 0063-78-8160002 (078-8160002 / 0-78-8160002) +63-78-8160003 / 0063-78-8160003 (078-8160003 / 0-78-8160003) +63-78-8160004 / 0063-78-8160004 (078-8160004 / 0-78-8160004) ...+63-78-xxxxxxx / 0063-78-xxxxxxx (078-xxxxxxx / 0-78-xxxxxxx) ...+63-78-8169995 / 0063-78-8169995 (078-8169995 / 0-78-8169995) +63-78-8169996 / 0063-78-8169996 (078-8169996 / 0-78-8169996) +63-78-8169997 / 0063-78-8169997 (078-8169997 / 0-78-8169997) +63-78-8169998 / 0063-78-8169998 (078-8169998 / 0-78-8169998) +63-78-8169999 / 0063-78-8169999 (078-8169999 / 0-78-8169999)