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postinumerot (11 kohdat):
BT4 (5)
BT40 (8)
BT41 (5)
BT42 (5)
BT43 (3)
BT44 (12)
BT45 (12)
BT46 (4)
BT47 (9)
BT48 (7)
BT49 (2)
Keskimääräinen GPS-koordinaatit postinumero bt4: 54.596, -5.881

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Listatut kaupungit:
>> Belfast BT4, County Antrim, Northern Ireland, GPS-koordinaatit: 54.5833,-5.9333
>> Sydenham BT4, County Antrim, Northern Ireland, GPS-koordinaatit: 54.6044,-5.8799
>> Belmont BT4, County Antrim, Northern Ireland, GPS-koordinaatit: 54.5957,-5.8806
>> Belfast East BT4, County Antrim, Northern Ireland, GPS-koordinaatit: 54.5957,-5.8806
>> Stormont BT4, County Antrim, Northern Ireland, GPS-koordinaatit: 54.5992,-5.8284