The root of the DNS database on the Internet is managed by the Internet Network Information Center (http://www.internic.com). The top-level domains were assigned organizationally and by country. These domain names follow the International Standard 3166. Two-letter and three-letter abbreviations are used for countries, and various abbreviations are reserved for use by organizations, as shown in the following examples.
|
DNS Domain Name |
Type of Organization |
|
com |
Commercial (for example, microsoft.com for Microsoft Corporation) |
|
edu |
Educational (for example, mit.edu for Massachusetts Institute of Technology) |
|
gov |
Government (for example, whitehouse.gov for the Whitehouse in Washington D.C.) |
|
int |
International organizations (for example, nato.int for NATO) |
|
mil |
Military operations (for example, army.mil for the Army) |
|
net |
Networking organizations (for example, nsf.net for NSFNET) |
|
org |
Noncommercial organizations (for example, fidonet.org for FidoNet) |