Telephone numbers beginning with 01553 belong to the Kings Lynn charge group.
The following numbers are local calls
to and from this charge group:
01366
01406
01485
01760
01945
The following numbers are regional calls
to and from this charge group:
01205
01263
01328
01353
01354
01362
01487
01731
01733
01754
01775
01778
01842
01953
All other calls are national calls.
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