Globally, every domain name ends with a full stop (dot) and either letters or a word. This suffix is called a TLD (Top Level Domain) or domain extension. This is the first level of a hierarchical DNS (Domain Name System) structure.
They come in various groups, such as:
- gTLDs (Generic Top Level Domains), which are usually 3 or more letters in length e.g., most easily recognizable are .com, .org, .net, .edu, .gov.
- ccTLDs (Country Code Top Level Domains), these are 2 letters and are generally based on the ISO 3166 code, e.g. .us, uk, il, etc.
- geoTLDS (Geographic Top Level Domains), these are associated to countries e.g., .nyc, .boston, .chicago, .vegas.
For a full list of TLDs maintained by IANA (Internet Assigned Numbers Authority), please click here.
For more information refer to our Knowledgebase Articles: What Is A Top Level Domain (TLD) and Why Is A .com TLD A Better Choice For A Domain Extension.