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BT1 6AT
a defunct postcode in Northern Ireland
This postcode was deleted in December 1991.
The nearest currently active postcodes are:
King Street BT1 6AD
King Street BT1 6BF
King Street BT1 6BZ
Castle Street BT1 1HP
Castle Street BT1 1HE
College Avenue BT1 6BB
College Avenue BT1 6BD
BT1 1GG
King Street BT1 1HU
Marquis Street BT1 1JJ