What country is area code 888?

Country code +888 (dialed as 00 888 from many places) is used for major international disaster relief operations, coordinated by the United Nations Office for the Coordination of Humanitarian Affairs (UN OCHA). These numbers are temporary, and may be reused in a future relief effort.

(The plus sign means "insert your international access prefix here." From a GSM mobile phone, you can enter the number in full international format, starting with the plus sign. The most common prefix is 00, but North America (USA, Canada, etc.) uses 011, Japan uses 010, Australia uses 0011, and many other countries use different prefixes.)