Telephone numbers beginning with 01974 belong to the Llanon charge group.
The following numbers are local calls
to and from this charge group:
01545
01550
01558
01570
01591
01597
016864
01970
The following numbers are regional calls
to and from this charge group:
01239
01267
01341
01559
01650
01654
01982
All other calls are national calls.
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