Microsoft windows 2000 DNS manual Int/net/org, Com Edu Gov Mil Army Microsoft, Mit Mydomain

			Managed by
			N Registration
			Authority
				int/net/org
	com
	edu	gov		mil
				army
microsoft
			whitehouse
		mit

mydomain

Managed by

Microsoft

DNS and Internet

Microsoft D i

The Internet Domain Name System is managed by a Name Registration Authority on the Internet, responsible for maintaining top-level domains that are assigned by organization and by country. These domain names follow the International Standard 3166. Existing abbreviations, reserved for use by organizations, as well as two- letter and three-letter abbreviations used for countries, are shown in the following table.

DNS Domain Name

com

edu

org

net

gov

DNS Domain Name

mil

num

arpa

xx

Type of Organization

Commercial organizations

Educational institutions

Non-profit organizations

Networks (the backbone of the Internet)

Non-military government organizations

Type of Organization

Military government organizations

Phone numbers

Reverse DNS

Two-letter country code

Resource Records

A DNS database consists of resource records (RRs). Each RR identifies a particular resource within the database. There are various types of RRs in DNS.

The following table provides detailed information on structure of common RRs (Note: this is not an exhaustive list of RRs).

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