Area Code +63-78-(6520000...6529999) 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 : 6520000 Subscriber Number To : 6529999 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-(6428900...6428999) next › : +63-78-(6541000...6541999) Dialling Instructions For trunk calls: 0 78 6520000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 63 78 6520000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 6520000 ~ 6529999 (Count: 10,000) Example: +63-78-6520000 / 0063-78-6520000 (078-6520000 / 0-78-6520000) +63-78-6520001 / 0063-78-6520001 (078-6520001 / 0-78-6520001) +63-78-6520002 / 0063-78-6520002 (078-6520002 / 0-78-6520002) +63-78-6520003 / 0063-78-6520003 (078-6520003 / 0-78-6520003) +63-78-6520004 / 0063-78-6520004 (078-6520004 / 0-78-6520004) ...+63-78-xxxxxxx / 0063-78-xxxxxxx (078-xxxxxxx / 0-78-xxxxxxx) ...+63-78-6529995 / 0063-78-6529995 (078-6529995 / 0-78-6529995) +63-78-6529996 / 0063-78-6529996 (078-6529996 / 0-78-6529996) +63-78-6529997 / 0063-78-6529997 (078-6529997 / 0-78-6529997) +63-78-6529998 / 0063-78-6529998 (078-6529998 / 0-78-6529998) +63-78-6529999 / 0063-78-6529999 (078-6529999 / 0-78-6529999)