Country code +686 (dialed as 00 686 from many places) is Kiribati, an island nation in the Pacific Ocean. All numbers are 5 digits after country code +686.
Mobile numbers begin with +686 6 or +686 9.
(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.)
Kiribati is country code +686. There are no city codes or area codes. The local number is 5 digits.
Leichtenstein is telephone country code +423.
where is telephone country code 1816
That is not a country code.
The country code and area code of Mexicali- B.C., Mexico is 52, (01)686.
Fiji has telephone country code +679.
Country code +57 is Colombia.
Gibraltar is country code +350.
Moldova is country code +373.
Slovenia is country code +386.
Vanuatu is country code +678.
Niue is country code +683.