+44-8433-(400000...409999): Special Services basic rate: up to and including 5p for BT customers (non-internet) Read more about +44-8433-(400000...409999)
+44-8433-(410000...419999): Special Services basic rate: up to and including 5p for BT customers (non-internet) Read more about +44-8433-(410000...419999)
+44-8433-(420000...429999): Special Services basic rate: up to and including 5p for BT customers (non-internet) Read more about +44-8433-(420000...429999)
+44-8433-(430000...439999): Special Services basic rate: up to and including 5p for BT customers (non-internet) Read more about +44-8433-(430000...439999)
+44-8433-(440000...449999): Special Services basic rate: up to and including 5p for BT customers (non-internet) Read more about +44-8433-(440000...449999)
+44-8433-(500000...509999): Special Services basic rate: up to and including 5p for BT customers (non-internet) Read more about +44-8433-(500000...509999)
+44-8433-(550000...559999): Special Services basic rate: up to and including 5p for BT customers (non-internet) Read more about +44-8433-(550000...559999)
+44-8453-(540000...549999): Special Services basic rate: BT’s Standard Local Call Retail Price for BT customers Read more about +44-8453-(540000...549999)
