+63-74-(2740000...2749999): Bontoc, Mountain Province (MOU) Read more about +63-74-(2740000...2749999)
+63-74-(2750000...2759999): Bontoc, Mountain Province (MOU) Read more about +63-74-(2750000...2759999)
+63-74-(3000000...3009999): Baguio City, Cordillera Administrative Region (15) Read more about +63-74-(3000000...3009999)
+63-74-(3010000...3019999): Baguio City, Cordillera Administrative Region (15) Read more about +63-74-(3010000...3019999)
+63-74-(3020000...3029999): Baguio City, Cordillera Administrative Region (15) Read more about +63-74-(3020000...3029999)