+44-121-(3450000...3459999): Birmingham, Birmingham (BIR) Read more about +44-121-(3450000...3459999)
+44-121-(5760000...5769999): Birmingham, Birmingham (BIR) Read more about +44-121-(5760000...5769999)
+44-1223-(770000...770999): Cambridge, Cambridgeshire (CAM) Read more about +44-1223-(770000...770999)
+44-1223-(771000...771999): Cambridge, Cambridgeshire (CAM) Read more about +44-1223-(771000...771999)
+44-1223-(773000...773999): Cambridge, Cambridgeshire (CAM) Read more about +44-1223-(773000...773999)
+44-1223-(775000...775999): Cambridge, Cambridgeshire (CAM) Read more about +44-1223-(775000...775999)
+44-1223-(777000...777999): Cambridge, Cambridgeshire (CAM) Read more about +44-1223-(777000...777999)
+44-1225-(520000...529999): Bath, Bath and North East Somerset (BAS) Read more about +44-1225-(520000...529999)
