The Internet Suffix for Zambian Websites

Where does the confusion lie?
The republic of Zambia is a country landlocked in the Southern Africa. While most of the African countries’ websites have been assigned internet suffix ‘.za’ ; Zambia is one of the exceptions due to which most of the internet users type URLs ending with wrong suffix.
Presently three types of DNS servers can be found namely: Root DNS servers, Top-Level DNS Servers, and Authoritative DNS Servers.
The Top-Level servers are mainly responsible for top-level internet suffix such as .com, .org,.net,.edu, and .gov. Also, these domains are responsible for all country top-level internet suffixes such as .uk, .fr, and for Zambian websites .zm