+44-8444-(010000...019999): Special Services basic rate: up to and including 5p for BT customers (non-internet) Read more about +44-8444-(010000...019999)
+44-8444-(240000...249999): Special Services basic rate: up to and including 5p for BT customers (non-internet) Read more about +44-8444-(240000...249999)
+44-8444-(340000...349999): Special Services basic rate: up to and including 5p for BT customers (non-internet) Read more about +44-8444-(340000...349999)
+44-8444-(540000...549999): Special Services basic rate: up to and including 5p for BT customers (non-internet) Read more about +44-8444-(540000...549999)
+44-8444-(640000...649999): Special Services basic rate: up to and including 5p for BT customers (non-internet) Read more about +44-8444-(640000...649999)
+44-8456-(260000...269999): Special Services basic rate: BT’s Standard Local Call Retail Price for BT customers Read more about +44-8456-(260000...269999)
+44-8702-(620000...629999): Special Services higher rate: BT’s Standard National Call Retail Price for BT customers Read more about +44-8702-(620000...629999)
