Telephone numbers beginning with 01840 belong to the Camelford charge group.
The following numbers are local calls
to and from this charge group:
01208
01288
01566
01579
The following numbers are regional calls
to and from this charge group:
01237
01409
01503
01637
01726
01752
01805
01822
01837
01841
01872
All other calls are national calls.
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