+44-1707-(480000...489999): Welwyn Garden City, Hertfordshire (HRT) Read more about +44-1707-(480000...489999)
+44-20-(70940000...70949999): London, City of London (LND) Read more about +44-20-(70940000...70949999)
+44-8452-(140000...149999): Special Services basic rate: BT’s Standard Local Call Retail Price for BT customers Read more about +44-8452-(140000...149999)
+44-8707-(840000...849999): Special Services higher rate: BT’s Standard National Call Retail Price for BT customers Read more about +44-8707-(840000...849999)
+44-8713-(890000...899999): Special Services higher rate: up to and including 10p for BT customers (non-internet) Read more about +44-8713-(890000...899999)
+44-8713-(960000...969999): Special Services higher rate: up to and including 10p for BT customers (non-internet) Read more about +44-8713-(960000...969999)
+44-8719-(120000...129999): Special Services higher rate: up to and including 10p for BT customers (non-internet) Read more about +44-8719-(120000...129999)
+44-9040-(380000...389999): Special Services, open ended time dependent charge or fixed fee up to £1.50 for BT customers Read more about +44-9040-(380000...389999)
