What country uses the telephone number that starts with 008821?

Telephone country codes never begin with zero. '00' is a commonly used international dialing prefix, but not part of the actual country code. Since many places use other prefixes, or even multiple prefixes for different types of international calls, it is least confusing to quote an international telephone number beginning with the plus symbol and the actual telephone country code.

Telephone country code +882 is used for international networks, including regional satellite phones. The next two digits specify the network; in this case, +882 16 is the code for a Thuraya Satellite phone.

(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.)