Area Code +63-77-(6550000...6559999) located in Laoag City, Ilocos Norte (ILN), more detail is as below. Place International Dialing Code : 63 International Prefix : 00 National Prefix : 0 National Destination Code : 77 Subscriber Number From : 6550000 Subscriber Number To : 6559999 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 : ILN Region Name : Ilocos Norte City : Laoag City Timezone : Asia/Manila Coordinated Universal Time : +08:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 9 Latitude : 18.2000 Longitude : 120.5900 ‹ previous : +63-77-(6530000...6539999) next › : +63-77-(6580000...6589999) Dialling Instructions For trunk calls: 0 77 6550000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 63 77 6550000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 6550000 ~ 6559999 (Count: 10,000) Example: +63-77-6550000 / 0063-77-6550000 (077-6550000 / 0-77-6550000) +63-77-6550001 / 0063-77-6550001 (077-6550001 / 0-77-6550001) +63-77-6550002 / 0063-77-6550002 (077-6550002 / 0-77-6550002) +63-77-6550003 / 0063-77-6550003 (077-6550003 / 0-77-6550003) +63-77-6550004 / 0063-77-6550004 (077-6550004 / 0-77-6550004) ...+63-77-xxxxxxx / 0063-77-xxxxxxx (077-xxxxxxx / 0-77-xxxxxxx) ...+63-77-6559995 / 0063-77-6559995 (077-6559995 / 0-77-6559995) +63-77-6559996 / 0063-77-6559996 (077-6559996 / 0-77-6559996) +63-77-6559997 / 0063-77-6559997 (077-6559997 / 0-77-6559997) +63-77-6559998 / 0063-77-6559998 (077-6559998 / 0-77-6559998) +63-77-6559999 / 0063-77-6559999 (077-6559999 / 0-77-6559999)