Top-level domains often abbreviated as TLDs are the domains at the highest level in the hierarchical DNS( Domain Name System) after the root domain. A DNS zone is an administrative space of the DNS namespace allowing more granular control of the DNS components.
There are basically two types of top-level domains:
- Non-geographical domains
- Geographical domains
Non-geographical domains or those which indicate the type of organization, e.g., in www.yahoo.com, the .com indicates that it is a commercial organization.
The Standard Non-Geographical Domains (Top Domains) are:
|.com||The .com domain is for commercial organizations||www.google.com|
|.edu||The .edu domain is for higher educational institutions like universities.||www.harvard.edu|
|.gov||The .gov domain is for government organizations.||www.usa.gov|
|.mil||The .mil domain is for the US military organizations||www.army.mil|
|.net||The .net domain is for network organizations or resources||www.juniper.net|
|.org||The .org website is for non-profit organizations which are not educational or commercial.||www.wikipedia.org|
Geographical domains indicate the code for individual countries. The geographically based top-level domains use two-letter country designations.
Examples of some geographic domains:
|kr||Korea (Republic of)|
|kw||Kuwait (State of)|