+44-8443-(970000...979999): Special Services basic rate: up to and including 5p for BT customers (non-internet) Read more about +44-8443-(970000...979999)
+44-8458-(530000...539999): Special Services basic rate: BT’s Standard Local Call Retail Price for BT customers Read more about +44-8458-(530000...539999)
+44-8703-(640000...649999): Special Services higher rate: BT’s Standard National Call Retail Price for BT customers Read more about +44-8703-(640000...649999)
