Telephone numbers beginning with 01580 belong to the Cranbrooke charge group.
The following numbers are local calls
to and from this charge group:
01233
01424
01435
01622
01797
01892
The following numbers are regional calls
to and from this charge group:
01227
01268
01273
01303
01304
01322
01323
01342
01375
01444
01474
01634
01689
01702
01732
01737
01795
01825
01883
01959
All other calls are national calls.
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