Telephone numbers beginning with 01631 belong to the Oban charge group.
The following numbers are local calls
to and from this charge group:
01680
01681
01688
01852
01855
01866
01879
01951
01967
The following numbers are regional calls
to and from this charge group:
01301
01397
01499
01546
01838
01972
All other calls are national calls.
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