+44-8446-(690000...699999): Special Services basic rate: up to and including 5p for BT customers (non-internet) Read more about +44-8446-(690000...699999)
+44-8454-(230000...239999): Special Services basic rate: BT’s Standard Local Call Retail Price for BT customers Read more about +44-8454-(230000...239999)
+44-8707-(180000...189999): Special Services higher rate: BT’s Standard National Call Retail Price for BT customers Read more about +44-8707-(180000...189999)
+44-8719-(060000...069999): Special Services higher rate: up to and including 10p for BT customers (non-internet) Read more about +44-8719-(060000...069999)