Area Code +63-64-(3900000...3909999) located in Cotabato City, North Cotabato (NCO), more detail is as below. Place International Dialing Code : 63 International Prefix : 00 National Prefix : 0 National Destination Code : 64 Subscriber Number From : 3900000 Subscriber Number To : 3909999 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 : Department of Transportation and Communications (DOTC) Click here to buy Philippines Area Code Database Other Information Language Code : en (English) Country Number : 608 (Philippines) Country Code : PH (Philippines) Region Code : NCO Region Name : North Cotabato City : Cotabato City Timezone : Asia/Manila Coordinated Universal Time : +08:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 9 Latitude : 7.2100 Longitude : 124.2500 ‹ previous : +63-64-(3840000...3849999) next › : +63-64-(3910000...3919999) Dialling Instructions For trunk calls: 0 64 3900000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 63 64 3900000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 3900000 ~ 3909999 (Count: 10,000) Example: +63-64-3900000 / 0063-64-3900000 (064-3900000 / 0-64-3900000) +63-64-3900001 / 0063-64-3900001 (064-3900001 / 0-64-3900001) +63-64-3900002 / 0063-64-3900002 (064-3900002 / 0-64-3900002) +63-64-3900003 / 0063-64-3900003 (064-3900003 / 0-64-3900003) +63-64-3900004 / 0063-64-3900004 (064-3900004 / 0-64-3900004) ...+63-64-xxxxxxx / 0063-64-xxxxxxx (064-xxxxxxx / 0-64-xxxxxxx) ...+63-64-3909995 / 0063-64-3909995 (064-3909995 / 0-64-3909995) +63-64-3909996 / 0063-64-3909996 (064-3909996 / 0-64-3909996) +63-64-3909997 / 0063-64-3909997 (064-3909997 / 0-64-3909997) +63-64-3909998 / 0063-64-3909998 (064-3909998 / 0-64-3909998) +63-64-3909999 / 0063-64-3909999 (064-3909999 / 0-64-3909999)