Area Code +63-78-(3420000...3429999) located in Basco, Batanes (BTN), more detail is as below. Place International Dialing Code : 63 International Prefix : 00 National Prefix : 0 National Destination Code : 78 Subscriber Number From : 3420000 Subscriber Number To : 3429999 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 : BTN Region Name : Batanes City : Basco Timezone : Asia/Manila Coordinated Universal Time : +08:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 9 Latitude : 20.4600 Longitude : 122.0000 ‹ previous : +63-78-(3380000...3389999) next › : +63-78-(3430000...3439999) Dialling Instructions For trunk calls: 0 78 3420000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 63 78 3420000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 3420000 ~ 3429999 (Count: 10,000) Example: +63-78-3420000 / 0063-78-3420000 (078-3420000 / 0-78-3420000) +63-78-3420001 / 0063-78-3420001 (078-3420001 / 0-78-3420001) +63-78-3420002 / 0063-78-3420002 (078-3420002 / 0-78-3420002) +63-78-3420003 / 0063-78-3420003 (078-3420003 / 0-78-3420003) +63-78-3420004 / 0063-78-3420004 (078-3420004 / 0-78-3420004) ...+63-78-xxxxxxx / 0063-78-xxxxxxx (078-xxxxxxx / 0-78-xxxxxxx) ...+63-78-3429995 / 0063-78-3429995 (078-3429995 / 0-78-3429995) +63-78-3429996 / 0063-78-3429996 (078-3429996 / 0-78-3429996) +63-78-3429997 / 0063-78-3429997 (078-3429997 / 0-78-3429997) +63-78-3429998 / 0063-78-3429998 (078-3429998 / 0-78-3429998) +63-78-3429999 / 0063-78-3429999 (078-3429999 / 0-78-3429999)