+44-1223-(818000...818999): Cambridge, Cambridgeshire (CAM) Read more about +44-1223-(818000...818999)
+44-8438-(500000...509999): Special Services basic rate: up to and including 5p for BT customers (non-internet) Read more about +44-8438-(500000...509999)
+44-8726-(300000...309999): Special Services higher rate: up to and including 10p for BT customers (non-internet) Read more about +44-8726-(300000...309999)
+44-9072-(960000...969999): Special Services, open ended time dependent charge or fixed fee up to £1.50 for BT customers Read more about +44-9072-(960000...969999)
