Telephone numbers beginning with 01550 belong to the Llandovery charge group.
The following numbers are local calls
to and from this charge group:
01269
01558
01591
01639
01874
01974
The following numbers are regional calls
to and from this charge group:
01267
01443
01495
01497
01545
01554
01559
01570
01597
01685
016864
01792
01970
01982
01994
All other calls are national calls.
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