What is a top-level domain (TLD)?
A top-level domain is the part of the domain name located to the right of the dot (” . “). The most common TLDs are .com, .net and .org. Several new top-level domains have been added to the menu recently, including, .biz, .info, .name, and .ws. The top-level domains have certain guidelines attached, but are for the most part available to any registrant, anywhere in the world. Exceptions are the restricted TLDs (rTLDs) — which include .aero, .biz, .edu, .mil, .museum, .name, and .pro — that require the registrant to represent a certain type of entity, or to belong to a certain community. The .name TLD is available strictly for individuals, while .edu is reserved for educational entities, such as universities or high schools. Where appropriate, a top-level domain name can be of geographic significance and hence only available to registrants in the locale defined by the TLD. These are called country-code TLDs (ccTLDs) and include such top-level domains as .bz (Belize),.ca (Canada), .
Tld means Top Level Domain . A “Top Level Domain” is what comes after the last dot in a Domain Name. Or, to put another way, what is to the ‘right” of the final dot.Some of the most commonly known Top Level Domains are: .com, .net, and .org and .au. The Top Level Domain types such as .com, .net and .org have been around for many years (since the Internet took its current form). Most of the possible (and comprehensible) Domain Names have been allocated from these TLDs. I have registered my top level domain name from this site 9cubehosting.com
