Area Code +44-8723-(500000...509999) located in Special Services higher rate: up to and including 10p for BT customers (non-internet), more detail is as below.
Place
Other Information
Dialling Instructions
For trunk calls: 0 8723 500000 (Trunk Code + National Destination Code + Subscriber Number)
For international calls: 00 44 8723 500000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number)
Telephone Number List
500000 ~ 509999 (Count: 10,000)
Example:
+44-8723-500000 / 0044-8723-500000 (08723-500000 / 0-8723-500000)
+44-8723-500001 / 0044-8723-500001 (08723-500001 / 0-8723-500001)
+44-8723-500002 / 0044-8723-500002 (08723-500002 / 0-8723-500002)
+44-8723-500003 / 0044-8723-500003 (08723-500003 / 0-8723-500003)
+44-8723-500004 / 0044-8723-500004 (08723-500004 / 0-8723-500004)
... +44-8723-xxxxxx / 0044-8723-xxxxxx (08723-xxxxxx / 0-8723-xxxxxx)
... +44-8723-509995 / 0044-8723-509995 (08723-509995 / 0-8723-509995)
+44-8723-509996 / 0044-8723-509996 (08723-509996 / 0-8723-509996)
+44-8723-509997 / 0044-8723-509997 (08723-509997 / 0-8723-509997)
+44-8723-509998 / 0044-8723-509998 (08723-509998 / 0-8723-509998)
+44-8723-509999 / 0044-8723-509999 (08723-509999 / 0-8723-509999)