+44-8434-(040000...049999): Special Services basic rate: up to and including 5p for BT customers (non-internet) Подробнее о +44-8434-(040000...049999)
+44-8451-(600000...609999): Special Services basic rate: BT’s Standard Local Call Retail Price for BT customers Подробнее о +44-8451-(600000...609999)
