any techeis there

[lalaip]

i have this doubt, most of the time i've been questioned with, what's my ip-adddress, when i use http://www.ip-details.com/ , i gives my address, but my friend says, its only my ISP's IP and not my systems, how to find my systems ip address?

[omgJOHN]

Your buddy is both right and wrong. Perhaps they just explained it in a confusing way. I'll do my best to explain it myself.

Your ISP supplies you with an IP address. This is used to identify you specifically through out the internet so all the various components that the internet runs on know where to send the data that is requested.

The IP address is assigned to whatever device is plugged into the port that supplies your internet. In most cases this is a modem or a router of some sort. If you're computer is plugged directly in the modem that means any data the modem requests usually goes directly to your computer. In that case, yes your computer is the IP number that shows up on that site.

However, if your connecting via a router, then the IP number on that site is for the router. There is an entirely different set of IPs assigned to whatever devices are connected to the router. However those only matter for your home network. Generally home network ips look like this "192.168.0.*" with the * being replaced with a number assigned to your device.
Once again, this is only for your home network and is used so that your router can remember which device is which, as each device is assigned with a unique number.

Generally, that site you supplied should be telling the proper IP unless you have some sort of proxy redirecting everything from somewhere else. If you need a way to have that IP mean a specific computer there are certain ways to do this, but I don't have the knowledge how to do this, and it varies depending on the router.

Hopefully this clears up some confusion. I tried to explain everything as best I can, but I'm no expert either. If there are any parts you're still confused on, or need some elaboration, feel free to ask. I'll give you the best answer I can.