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Your router is a fundamental part of your internet connection. You can typically configure settings, but you first need to know its local IP address.
I lost the IP address of my router. How do I find the address that allows me to configure the router?
Most routers work on one of a couple of different IP addresses. Rather than just show you those two, I'll show you how to determine your router's most likely IP address.
It's not a 100% solution, but it's pretty darned close.
I'm going to assume that you have a working network and are connected through the router that we're talking about.
Start a Windows Command Prompt; typically, you can open this by clicking in All Programs, Accessories. Or you can click the Start button, click Run (or type Windows key + R) and type "cmd", and click OK.
You'll be presented with a new window, much like this:
In the Command Prompt window, type the following:
Follow by hitting the Enter key.
You'll end up with information that looks much like this:
Windows IP Configuration Ethernet adapter Bluetooth Network Connection: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Wireless LAN adapter Wireless Network Connection: Connection-specific DNS Suffix . : Link-local IPv6 Address . . . . . : fe80::601f:2c7:9844:4af1%12 IPv4 Address. . . . . . . . . . . : 192.168.1.154 Subnet Mask . . . . . . . . . . . : 255.255.255.0 Default Gateway . . . . . . . . . : 192.168.1.1 Ethernet adapter Local Area Connection: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . :
Depending on your computer's configuration, you may need to use the scroll bar in the Command Prompt window to scroll up and down to see it all.
The line that we're interested in is this one:
In advanced configurations, you may have more than one, but the IP addresses would be different. In order of preference, you want the 192.168.x.x address, an address in the range 172.16.x.x through 172.31.x.x, the 10.x.x.x address, or lastly, the 5.x.x.x address. Most commonly, it'll be a 192.168.x.x address.
In fact, it's very likely that it'll be either 192.168.0.1 or 192.168.1.1.
Regardless, you are looking specifically for the Default Gateway address - the one that data is routed to first when its final destination is a remote network, like the internet.
In all likelihood, this is the IP address of your router.
Most routers now use a web-like interface for configuration, making them easy to access with any web browser once you know the IP address.
Enter "http://" followed by the IP address that you discovered above into your browser:
As you can see in the example above, doing so causes the router to prompt for a username and password. The default settings will vary based on what router you have; for security reasons, you will hopefully have specified your own password at some point in the past.
There's nothing that says that the router must be the default gateway - it just usually is.
The next thing that I would try would be to look at your computer's IP address ("IPv4 Address" in the ipconfig output above) and the Default Gateway address and then replace the third and fourth numbers with 0 or 1. For example, if my IP address were 192.168.1.154, I would try:
(192.168.0.0 is technically an illegal device address.)
Well, I'd break down and finally read the manual for the router to see what its default address should be. (In some cases, this is even printed on the underside of the router.)
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