區號 蒙古 區號蒙古: 市/鎮或地區 區號 1.Baatsagaan44412.Bagakhangai223.Baganuur214.Baruun Bayan-Ulaan32415.Baruun-Urt city5126.Baruunbüren36427.Baruunturuun45418.Bat-Ölzii32429.Batnorov (Berkh)564110.Batshireet564211.Batsümber274412.Battsengel334113.Bayan274514.Bayan-Adarga564315.Bayan-Agt344116.Bayan-Öndör324417.Bayan-Öndör444618.Bayan-Önjüül274819.Bayan-Ovoo444520.Bayan-Ovoo534221.Bayan-Ovoo564522.Bayan-Uul484223.Bayan-Uul (Ereen)584324.Bayanbulag444225.Bayanchandmani275326.Bayandalai534127.Bayandelger514228.Bayandelger274629.Bayandun584130.Bayangol324331.Bayangol364332.Bayangovi444333.Bayanjargalan594234.Bayanjargalan274735.Bayankhairhan464436.Bayankhangai274937.Bayankhongor city44238.Bayankhutag564639.Bayanlig444440.Bayanmönkh564441.Bayannuur344242.Bayannuur424343.Bayantal544144.Bayantes464345.Bayantsagaan444746.Bayantsagaan275147.Bayantsogt275248.Bayantümen584249.Bayanzürkh384350.Biger484351.Binder564752.Bogd324553.Bogd444854.Bökhmörön454255.Bömbögör444956.Bornuur275457.Bugat344358.Bugat424459.Bugat484460.Bulgan584461.Bulgan334262.Bulgan424563.Bulgan434264.Bulgan534365.Bulgan city34266.Bürd324667.Büregkhangai344468.Büren275569.Bürentogtokh384470.Buutsagaan445171.Buyant424672.Buyant4343