+44-8435-(700000...709999): Special Services basic rate: up to and including 5p for BT customers (non-internet) Read more about +44-8435-(700000...709999)
+44-8455-(600000...609999): Special Services basic rate: BT’s Standard Local Call Retail Price for BT customers Read more about +44-8455-(600000...609999)
+44-8710-(457000...457999): Internet Services incorporating un-metered access up to and including 10p for BT customers Read more about +44-8710-(457000...457999)
+44-8726-(420000...429999): Special Services higher rate: up to and including 10p for BT customers (non-internet) Read more about +44-8726-(420000...429999)
