+63-74-(4430000...4439999): Baguio City, Cordillera Administrative Region (15) Read more about +63-74-(4430000...4439999)
+63-74-(4440000...4449999): Baguio City, Cordillera Administrative Region (15) Read more about +63-74-(4440000...4449999)
+63-74-(4450000...4459999): Baguio City, Cordillera Administrative Region (15) Read more about +63-74-(4450000...4459999)
+63-74-(4460000...4469999): Baguio City, Cordillera Administrative Region (15) Read more about +63-74-(4460000...4469999)
+63-74-(4470000...4479999): Baguio City, Cordillera Administrative Region (15) Read more about +63-74-(4470000...4479999)
+63-74-(4480000...4489999): Baguio City, Cordillera Administrative Region (15) Read more about +63-74-(4480000...4489999)
+63-74-(4620000...4629999): Bontoc, Mountain Province (MOU) Read more about +63-74-(4620000...4629999)
+63-74-(4660000...4669999): Sagada, Mountain Province (MOU) Read more about +63-74-(4660000...4669999)