Area Code +63-77-(7790000...7799999) 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 : 7790000 Subscriber Number To : 7799999 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-(7779000...7779999) next › : +63-77-(7810000...7819999) Dialling Instructions For trunk calls: 0 77 7790000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 63 77 7790000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 7790000 ~ 7799999 (Count: 10,000) Example: +63-77-7790000 / 0063-77-7790000 (077-7790000 / 0-77-7790000) +63-77-7790001 / 0063-77-7790001 (077-7790001 / 0-77-7790001) +63-77-7790002 / 0063-77-7790002 (077-7790002 / 0-77-7790002) +63-77-7790003 / 0063-77-7790003 (077-7790003 / 0-77-7790003) +63-77-7790004 / 0063-77-7790004 (077-7790004 / 0-77-7790004) ...+63-77-xxxxxxx / 0063-77-xxxxxxx (077-xxxxxxx / 0-77-xxxxxxx) ...+63-77-7799995 / 0063-77-7799995 (077-7799995 / 0-77-7799995) +63-77-7799996 / 0063-77-7799996 (077-7799996 / 0-77-7799996) +63-77-7799997 / 0063-77-7799997 (077-7799997 / 0-77-7799997) +63-77-7799998 / 0063-77-7799998 (077-7799998 / 0-77-7799998) +63-77-7799999 / 0063-77-7799999 (077-7799999 / 0-77-7799999)