+44-8437-(240000...249999): Special Services basic rate: up to and including 5p for BT customers (non-internet) Read more about +44-8437-(240000...249999)
+44-8437-(250000...259999): Special Services basic rate: up to and including 5p for BT customers (non-internet) Read more about +44-8437-(250000...259999)
+44-8437-(260000...269999): Special Services basic rate: up to and including 5p for BT customers (non-internet) Read more about +44-8437-(260000...269999)
+44-8451-(520000...529999): Special Services basic rate: BT’s Standard Local Call Retail Price for BT customers Read more about +44-8451-(520000...529999)
