+44-8444-(400000...409999): Special Services basic rate: up to and including 5p for BT customers (non-internet) Read more about +44-8444-(400000...409999)
+44-8450-(160000...169999): Special Services basic rate: BT’s Standard Local Call Retail Price for BT customers Read more about +44-8450-(160000...169999)
+44-8700-(830000...839999): Special Services higher rate: BT’s Standard National Call Retail Price for BT customers Read more about +44-8700-(830000...839999)
+44-9051-(390000...399999): Special Services, open ended time dependent charge or fixed fee up to £1.50 for BT customers Read more about +44-9051-(390000...399999)
+44-9055-(850000...859999): Special Services, open ended time dependent charge or fixed fee up to £1.50 for BT customers Read more about +44-9055-(850000...859999)
