Area Code +44-8721-(880000...889999) 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 8721 880000 (Trunk Code + National Destination Code + Subscriber Number)
For international calls: 00 44 8721 880000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number)
Telephone Number List
880000 ~ 889999 (Count: 10,000)
Example:
+44-8721-880000 / 0044-8721-880000 (08721-880000 / 0-8721-880000)
+44-8721-880001 / 0044-8721-880001 (08721-880001 / 0-8721-880001)
+44-8721-880002 / 0044-8721-880002 (08721-880002 / 0-8721-880002)
+44-8721-880003 / 0044-8721-880003 (08721-880003 / 0-8721-880003)
+44-8721-880004 / 0044-8721-880004 (08721-880004 / 0-8721-880004)
... +44-8721-xxxxxx / 0044-8721-xxxxxx (08721-xxxxxx / 0-8721-xxxxxx)
... +44-8721-889995 / 0044-8721-889995 (08721-889995 / 0-8721-889995)
+44-8721-889996 / 0044-8721-889996 (08721-889996 / 0-8721-889996)
+44-8721-889997 / 0044-8721-889997 (08721-889997 / 0-8721-889997)
+44-8721-889998 / 0044-8721-889998 (08721-889998 / 0-8721-889998)
+44-8721-889999 / 0044-8721-889999 (08721-889999 / 0-8721-889999)