+44-1246-(737000...737999): Chesterfield, Derbyshire (DBY) Read more about +44-1246-(737000...737999)
+44-1248-(830000...839999): Bangor (Gwynedd), Gwynedd (GWN) Read more about +44-1248-(830000...839999)
+44-1250-(760000...769999): Blairgowrie, Perth and Kinross (PKN) Read more about +44-1250-(760000...769999)
+44-1254-(310000...310999): Blackburn, Blackburn with Darwen (BBD) Read more about +44-1254-(310000...310999)