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LL54 6AQ
a defunct large user postcode in Llanllyfni
This postcode was deleted in May 1994.
The nearest currently active postcodes are:
Nantlle Road LL54 6AF
Nantlle Road LL54 6AE
Eifion Terrace LL54 6AN
Bryn Hyfryd Terrace LL54 6AH
Eifion Terrace LL54 6AL
Talyllyn LL54 6AT
Cavour Street LL54 6AW
Bryncelyn Road LL54 6AR
Gloddfa Glai LL54 6BY
Bryn Derwen Terrace LL54 6AS