 Examples of postcodes are "BB3713" which represents the postcode area Anggerek Desa; "KB4533" which represents Panaga; and "BA2110" which represents "Jabatan Hal Ehwal Masjid" or the Department of Mosque Affairs.The components of a postcode comprises four types of codes representing districts, mukims (subdistricts), villages and post offices.The first letter denotes the district code, which corresponds to the districts () of Brunei.