Telephone numbers beginning with 01536 belong to the Kettering charge group.
The following numbers are local calls
to and from this charge group:
01572
01604
01780
01832
01858
01933
The following numbers are regional calls
to and from this charge group:
0116
01203
01234
01280
01295
01327
01354
01455
01480
01487
01509
01525
01664
01731
01733
01767
01778
01788
01908
01926
All other calls are national calls.
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