According to the UN web site, it's an unused area code for south-Central Asia.
http://unstats.un.org/unsd/methods/m49/m49chang.htm
From what I can tell, it's scammers calling to get credit card information.
Telephone country codes never begin with zero.
Country code +62 is Indonesia.
(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.)
The telephone country code for Zimbabwe is +263. The area code for Norton is 062, or +263 62 in international format.
The telephone country code for Vietnam is +84. The area code for Binh Thuan is 062, or +84 62 in international format.
Leichtenstein is telephone country code +423.
where is telephone country code 1816
That is not a country code.
There is no 909 country code.
There is no telephone country code +897, nor +89, nor any other country code beginning with +89. There are no valid telephone numbers beginning with +89.
Gibraltar is country code +350.
Moldova is country code +373.
Slovenia is country code +386.
Togo is country code +228.
Liberia is country code +231.