+44-1248-(515000...515999): Bangor (Gwynedd), Gwynedd (GWN) Read more about +44-1248-(515000...515999)
+44-1250-(520000...529999): Blairgowrie, Perth and Kinross (PKN) Read more about +44-1250-(520000...529999)
+44-1254-(437000...437999): Blackburn, Blackburn with Darwen (BBD) Read more about +44-1254-(437000...437999)