+44-8434-(790000...799999): Special Services basic rate: up to and including 5p for BT customers (non-internet) Read more about +44-8434-(790000...799999)
+44-8451-(530000...539999): Special Services basic rate: BT’s Standard Local Call Retail Price for BT customers Read more about +44-8451-(530000...539999)
+44-8709-(620000...629999): Special Services higher rate: BT’s Standard National Call Retail Price for BT customers Read more about +44-8709-(620000...629999)
+44-8710-(505000...505999): Non ‘BT Discount Scheme’ - Internet Services metered access up to and including 10ppm for BT customers Read more about +44-8710-(505000...505999)
