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postinumerot (11 kohdat):
BT3 (3)
BT30 (15)
BT31 (2)
BT32 (9)
BT33 (3)
BT34 (12)
BT35 (7)
BT36 (3)
BT37 (1)
BT38 (5)
BT39 (6)
Keskimääräinen GPS-koordinaatit postinumero bt3: 54.583, -5.933

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Listatut kaupungit:
>> Belfast BT3, County Antrim, Northern Ireland, GPS-koordinaatit: 54.5833,-5.9333
>> Belfast City Airport BT3, County Antrim, Northern Ireland, GPS-koordinaatit: 54.5833,-5.9333
>> Belfast Harbour Estate BT3, County Antrim, Northern Ireland, GPS-koordinaatit: 54.5833,-5.9333