Telephone numbers beginning with 01848 belong to the Thornhill charge group.
The following numbers are local calls
to and from this charge group:
013872
013874
013875
013876
013877
013878
01644
01659
01683
01864
The following numbers are regional calls
to and from this charge group:
01290
013873
01461
01555
01556
01557
01576
01671
016973
01899
All other calls are national calls.
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