Area Code +44-8431-(180000...189999) located in Special Services basic rate: up to and including 5p for BT customers (non-internet), more detail is as below.
Place
Other Information
Dialling Instructions
For trunk calls: 0 8431 180000 (Trunk Code + National Destination Code + Subscriber Number)
For international calls: 00 44 8431 180000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number)
Telephone Number List
180000 ~ 189999 (Count: 10,000)
Example:
+44-8431-180000 / 0044-8431-180000 (08431-180000 / 0-8431-180000)
+44-8431-180001 / 0044-8431-180001 (08431-180001 / 0-8431-180001)
+44-8431-180002 / 0044-8431-180002 (08431-180002 / 0-8431-180002)
+44-8431-180003 / 0044-8431-180003 (08431-180003 / 0-8431-180003)
+44-8431-180004 / 0044-8431-180004 (08431-180004 / 0-8431-180004)
... +44-8431-xxxxxx / 0044-8431-xxxxxx (08431-xxxxxx / 0-8431-xxxxxx)
... +44-8431-189995 / 0044-8431-189995 (08431-189995 / 0-8431-189995)
+44-8431-189996 / 0044-8431-189996 (08431-189996 / 0-8431-189996)
+44-8431-189997 / 0044-8431-189997 (08431-189997 / 0-8431-189997)
+44-8431-189998 / 0044-8431-189998 (08431-189998 / 0-8431-189998)
+44-8431-189999 / 0044-8431-189999 (08431-189999 / 0-8431-189999)