Telephone numbers beginning with 01668 belong to the Belford charge group.
The following numbers are local calls
to and from this charge group:
01289
01573
01665
01669
018902
018903
018908
The following numbers are regional calls
to and from this charge group:
01361
014342
01578
01670
01830
01835
018907
All other calls are national calls.
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