+63-77-(6760000...6769999): Laoag City, Ilocos Norte (ILN) Read more about +63-77-(6760000...6769999)
+63-77-(6770000...6779999): Laoag City, Ilocos Norte (ILN) Read more about +63-77-(6770000...6779999)
+63-77-(6780000...6789999): Laoag City, Ilocos Norte (ILN) Read more about +63-77-(6780000...6789999)
+63-77-(7010000...7019999): Laoag City, Ilocos Norte (ILN) Read more about +63-77-(7010000...7019999)