+44-8444-(190000...199999): Special Services basic rate: up to and including 5p for BT customers (non-internet) Read more about +44-8444-(190000...199999)
+44-8448-(390000...399999): Special Services basic rate: up to and including 5p for BT customers (non-internet) Read more about +44-8448-(390000...399999)
+44-8448-(670000...679999): Special Services basic rate: up to and including 5p for BT customers (non-internet) Read more about +44-8448-(670000...679999)
+44-8449-(030000...039999): Special Services basic rate: up to and including 5p for BT customers (non-internet) Read more about +44-8449-(030000...039999)
+44-8449-(810000...819999): Special Services basic rate: up to and including 5p for BT customers (non-internet) Read more about +44-8449-(810000...819999)
+44-8450-(420000...429999): Special Services basic rate: BT’s Standard Local Call Retail Price for BT customers Read more about +44-8450-(420000...429999)
