Telephone numbers beginning with 01666 belong to the Malmesbury charge group.
The following numbers are local calls
to and from this charge group:
01249
01285
01453
01454
01793
The following numbers are regional calls
to and from this charge group:
0117
01225
01235
01242
01275
01291
01367
01373
01380
01451
01452
01488
01531
01594
01600
01672
01749
01761
01980
01985
01989
01993
All other calls are national calls.
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