Telephone numbers beginning with 01678 belong to the Bala charge group.
The following numbers are local calls
to and from this charge group:
01341
01490
01650
01690
01691
01766
The following numbers are regional calls
to and from this charge group:
01248
01286
01352
01492
01654
016864
016866
016868
01745
01758
01824
01938
01978
All other calls are national calls.
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