+44-20-(80280000...80289999): London, City of London (LND) Lees verder over +44-20-(80280000...80289999)
+44-8445-(960000...969999): Special Services basic rate: up to and including 5p for BT customers (non-internet) Lees verder over +44-8445-(960000...969999)
+44-8447-(300000...309999): Special Services basic rate: up to and including 5p for BT customers (non-internet) Lees verder over +44-8447-(300000...309999)
+44-8447-(710000...719999): Special Services basic rate: up to and including 5p for BT customers (non-internet) Lees verder over +44-8447-(710000...719999)
+44-8454-(880000...889999): Special Services basic rate: BT’s Standard Local Call Retail Price for BT customers Lees verder over +44-8454-(880000...889999)
+44-8709-(400000...409999): Special Services higher rate: BT’s Standard National Call Retail Price for BT customers Lees verder over +44-8709-(400000...409999)
+44-8712-(700000...709999): Special Services higher rate: up to and including 10p for BT customers (non-internet) Lees verder over +44-8712-(700000...709999)
+44-8713-(540000...549999): Special Services higher rate: up to and including 10p for BT customers (non-internet) Lees verder over +44-8713-(540000...549999)
