+63-77-(2320000...2329999): San Nicolas, Ilocos Norte (ILN) Read more about +63-77-(2320000...2329999)
+63-77-(6020000...6029999): San Nicolas, Ilocos Norte (ILN) Read more about +63-77-(6020000...6029999)
+63-77-(6100000...6109999): San Nicolas, Ilocos Norte (ILN) Read more about +63-77-(6100000...6109999)
+63-77-(7810000...7819999): San Nicolas, Ilocos Norte (ILN) Read more about +63-77-(7810000...7819999)
