DNS

Marketing Glossary

Market Ruler, LLC

DNS

Acronym. Domain Name Server.

A server which translates a Domain Name into one or more IP Addresses.

When using a Web Browser, DNS takes the part between "http://" and the first slash "/" and converts it into an IP Address, which is a very large number which uniquely identifies a web server on the internet.

For example for the web address:

http://www.example.com/

DNS takes the term www.example.com and converts it into an IP address: 192.0.32.10

DNS Applications

DNS is used as the primary way of converting names on the internet to addresses. Any application which accesses the internet uses DNS first to find a server. Because DNS is the first step used in any internet transaction, it is the target of security breaks.

DNS is used by the following applications:

DNS Tools

On Linux, FreeBSD, Mac OS X, or any variant, you can use a command line tool (using iTerm, Terminal, xterm, or some similar shell tool) to perform DNS on the fly using the host command:

> host www.example.com
www.example.com has address 192.0.32.10

On Windows, to perform DNS requests, go to the Start Menu, then Run ..., and type in nslookup:

Default Server: acumen
Address: 192.168.0.1
> www.example.com Server: acumen Address: 192.168.0.1
Non-authoritative answer: Name: www.example.com Address: 192.0.32.10

You can just enter the name you wish to resolve and it will output the response from your local DNS server.

More info

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