Telephone numbers beginning with 01792 belong to the Swansea charge group.
The following numbers are local calls
to and from this charge group:
01269
01554
01639
The following numbers are regional calls
to and from this charge group:
01222
01267
01443
01446
01550
01558
01559
01570
01643
01656
01685
01834
01874
01994
All other calls are national calls.
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