How to get your own IP Address

I have been asked by many people of the best way to get your IP address. Here I demonstrate a few common methods to get your own IP address
 

IPCONFIG

By far the quickest and most common method of getting your IP address on Windows based systems is the ipconfig command which is typed at the command prompt.

The above image is the output of the command ipconfig with no arguments

IFCONFIG

To find out your IP address on a Linux / UNIX based system you need to use command ifconfig. If no arguments are given to ifconfig command it displays the status of the current active interfaces

The command syntax typed at the prompt is

$ /sbin/ifconfig

The output of above command displays Ethernet IP address, Mac address, subnet mask and other information
 

NETSTAT

NETSTAT is a command-line tool that displays network connections, routing tables, and a number of network interface statistics. It is available on Unix/Linux and Windows based operating systems.

The netstat command displays the IP address of the local system and connections

An important point to note is that initially the IP address 127.0.0.1 (localhost) is mentioned under the heading Local Address and when connections are opened to external address (during internet browsing, connecting to systems using protocols like FTP, etc) the actual local IP address of the system is displayed under the column Local Address

Programming Languages

Many programming languages like PHP, ASP, Java, etc have functions, methods to get the IP address of the local system

A sample script to get your IP address using Active Server Pages is mentioned below

<%
Response.Write “Hello! Your IP Address is: ” & Request.ServerVariables(“REMOTE_ADDR”)
%>

In the code abov, within the ASP tags, <% … %>, you can retrieve the IP address of a user through the ServerVariables collection of the Request object

Utilities

There are many utilities available on the internet that allow you to find your own IP address and more. Some of them are

IP Finder
IP Address Monster

Websites

Many websites allow you to find out your IP address and other information. A few of them are

http://whatismyipaddress.com
http://www.samspade.org
http://www.find-ip-address.org
http://www.ipaddresslocation.org