Zambia is country code +260.
(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 +259 is assigned to Zambia. When dialing from abroad, you would start with +259 followed by the local number you wish to reach in Zambia. This code is used for both landlines and mobile phones within the country.
The country code and area code of Kitwe, Zambia is 260, (0)2.
The country code and area code of Kabwe, Zambia is 260, (0)5.
The country code and area code of Solwezi, Zambia is 260, (0)8.
The country code and area code of Mongu, Zambia is 260, (0)7.
Leichtenstein is telephone country code +423.
where is telephone country code 1816
That is not a country code.
ZM Zambia
The postal code system in Zambia is called the postcode system, and it consists of a four-digit number. The postcode for Zambia is 10101. This postcode is used for sorting and delivering mail within Zambia's postal system.
ZM is Zambia, but ZN is unassigned.
Fiji has telephone country code +679.