What is my I.P. address and location?

I was on a web site last night and it exposed my I.P. address and location. How could they know this information? Isn’t this a infringement of privacy?
Desish

I’m a travelling salesman from the old school who has recently been handled a laptop. I’m still trying to get a grip on new technology and have realized that it’s not easy for an old dog to learn new tricks. Anyway, my boss asked me to keep a note of the I.P. address each time I use the internet (which is from a hotel I stay in). How can I know my I.P. address?
Mukesh Khanchanda

Get your I.P. address and geographic location

There are tens of free online services that will notify you of the I.P. address as well as the geographic location. And this is not an infringement of privacy in the strict sense because nothing ‘private’ is being disclosed.

Most programming languages on the internet provide functions through which I.P. address and the geographic location can be revealed quite easily.

Simply visit the services below to get your IP address and geographic location.

WhatIsMyIPAddress.com

Not only shows your IP address and ISP but also gives your geographic location on a visual map (Google).
WhatIsMyIPAddress.com

WhatIsMyIP.com

Simply displays the I.P. address in bold text on the page.
WhatIsMyIP.com

IP Chicken

Displays your IP address, ISP name and browser name and version.
IP Chicken

IPAddressWorld.com

In addition to showing your IP address, this service also provides code which you can embed on your web site. Visitors would then be able to view their IP addresses on your web site. A sister service ip2location.com maps your IP to the geographic location.
IPAddressWorld.com

123myip.com

Check your I.P. address, location and also the internet speed.
123myip.com

Myipaddress.com

Quick way to get your I.P. though it might present a CAPTCHA puzzle sometimes.
Myipaddress.com

Whatsmyip.org

Shows your I.P. in bold at the very top of the page.
Whatsmyip.org

Simple PHP code to dig out the visitors IP address

PHP, the popular server-side language, has a simple function through which you can display the I.P. address to the visitor. Obviously, your web hosting server should have PHP running.

<?php
$ip_address = $_SERVER['REMOTE_ADDR'];
print "$ip_address";
?>

FYI, you can also hide your IP address through online proxy services.