Your computer's IP address which ipconfig reports is the address of your computer in a LAN (Local Area Network). This LAN is a self-contained unit and within it there's something that assigns addresses to computers in the network.
You'll find that your LAN is connected to the Internet via a router. Essentially the router communicates with other Internet sites on behalf of all computers on your network, you don't connect directly. This router belongs to both networks; in your LAN it has a LAN address, but it also has an Internet address. The latter is what the ip-address.com site shows you.
Joined: Jul 20, 2002
What if my computer got a static IP? Should ipconfig and the web site give the same IP? [ May 09, 2008: Message edited by: Jane Somerfield ]
It's perfectly possible that your network administrator set up your computer with a static IP address in your LAN. All that means ("static IP") is that your IP address won't ever change; often networks are set up so that IP addresses are reassigned from time to time.
It's also perfectly possible that the router connecting your network to the Internet was assigned a static IP address by your ISP (Internet Service Provider).
At any rate, perhaps you should ask your network administrator these questions. You do have a LAN, don't you? Then it must have an administrator.
Originally posted by Pat Farrell: Everyone has a lan in their house these days, and most folks are pretty weak LAN administrators. Even those of us who are talented and good looking.
Scary thought, isn't it? Somebody who would call the plumber to clean out their plugged sink, but they are running their own TCP network. I'm guilty as charged. Well, at least I read Networking for Dummies before I did that. And I'm really not that good-looking either.