+44-8438-(380000...389999): Special Services basic rate: up to and including 5p for BT customers (non-internet) Read more about +44-8438-(380000...389999)
+44-8455-(900000...909999): Special Services basic rate: BT’s Standard Local Call Retail Price for BT customers Read more about +44-8455-(900000...909999)
+44-8726-(100000...109999): Special Services higher rate: up to and including 10p for BT customers (non-internet) Read more about +44-8726-(100000...109999)
