Area Code +63-78-(8811000...8811999) located in Cauayan 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 : 8811000 Subscriber Number To : 8811999 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 : Cauayan City Timezone : Asia/Manila Coordinated Universal Time : +08:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 9 Latitude : 16.9300 Longitude : 121.7700 ‹ previous : +63-78-(8809000...8809999) next › : +63-78-(8812000...8812999) Dialling Instructions For trunk calls: 0 78 8811000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 63 78 8811000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 8811000 ~ 8811999 (Count: 1,000) Example: +63-78-8811000 / 0063-78-8811000 (078-8811000 / 0-78-8811000) +63-78-8811001 / 0063-78-8811001 (078-8811001 / 0-78-8811001) +63-78-8811002 / 0063-78-8811002 (078-8811002 / 0-78-8811002) +63-78-8811003 / 0063-78-8811003 (078-8811003 / 0-78-8811003) +63-78-8811004 / 0063-78-8811004 (078-8811004 / 0-78-8811004) ...+63-78-xxxxxxx / 0063-78-xxxxxxx (078-xxxxxxx / 0-78-xxxxxxx) ...+63-78-8811995 / 0063-78-8811995 (078-8811995 / 0-78-8811995) +63-78-8811996 / 0063-78-8811996 (078-8811996 / 0-78-8811996) +63-78-8811997 / 0063-78-8811997 (078-8811997 / 0-78-8811997) +63-78-8811998 / 0063-78-8811998 (078-8811998 / 0-78-8811998) +63-78-8811999 / 0063-78-8811999 (078-8811999 / 0-78-8811999)