+63-77-(2193000...2193999): Laoag City, Ilocos Norte (ILN) Read more about +63-77-(2193000...2193999)
+63-77-(2320000...2329999): San Nicolas, Ilocos Norte (ILN) Read more about +63-77-(2320000...2329999)
+63-77-(2350000...2359999): Laoag City, Ilocos Norte (ILN) Read more about +63-77-(2350000...2359999)
