Telephone numbers beginning with 01389 belong to the Dumbarton charge group.
The following numbers are local calls
to and from this charge group:
01360
0141
01436
01475
01505
The following numbers are regional calls
to and from this charge group:
01236
01259
01292
01294
01301
01324
01355
01357
01369
01499
01501
01546
01560
01563
01698
01700
01786
01838
01877
01880
All other calls are national calls.
Back to the main charging information page.