192.168.1.1 (192.168.l.l), 192.168.2.1, 192.168.0.1 or 10.0.0.x IP addresses are the default gateway of most routers in the world.
Through this IP address, you can get into the management panel to setup or change your network settings, and somehow, fix a relative's network issues.
If you’ve forgotten what that IP address is, here’s how to find it on just about every platform.
Your router’s IP address is the “Default Gateway” in your network connection information on Windows. If you prefer using the Command Prompt, you can find the default gateway for any connection quickly by using the ipconfig command.
If you prefer, you can also find the default gateway address through the graphic interface. First, open the Control Panel. Just click Start, type “control panel,” and then hit Enter.
In the “Network and Internet” category, click the “View network status and tasks” link.
In the upper right corner of the “Network and Sharing Center” window, click the name of your network connection.
In the “Ethernet Status” window, click the “Details” button.
In the “Network Connection Details” window, you’ll find your router’s IP address listed as “IPv4 Default Gateway.”
If you’re using a Mac, finding your router’s IP address is pretty straightforward. Click the “Apple” menu on the bar at the top of your screen and select “System Preferences”. In the “System Preferences” window, click the “Network” icon.
Select your network connection—for example, a Wi-Fi or wired connection—and then click the “Advanced” button at the bottom of the screen.
In the “Network” window, select the “TCP/IP” tab. You’ll see your router’s IP address listed simply as “Router.”
On an iPhone or iPad, just head to Settings > Wi-Fi, and then tap the name of your Wi-Fi network. You’ll see the router’s IP address listed as “Router”.
Oddly enough, Android doesn’t provide a way to view network connection information out of the box.
Many third-party Android apps will show this information, including Wi-FI Analyzer, which also provides an excellent way to choose the ideal Wi-Fi channel for your router’s Wi-Fi network. If you have another network information app, just look for the “Gateway” IP address.
If you use Wi-Fi Analyzer, tap the “View” menu, and then select “AP list”. At the top of this screen, you’ll see a “Connected to: [Network Name]” header. Tap that and a window will appear with more information about your network. You’ll find the router’s address listed as “Gateway.”
If you don't want to use Wi-Fi Analyzer, you can find it in a manual way: go to "Settings" > Long tap on your network name > Tap on “Modify network config” > Set the checkbox “Show advanced options” > Switch the “IP settings” to “Static” > Scroll down to the “Gateway” field. Gateway IP is your router’s IP address.
If you’re using a Chromebook, click the notification area at right side of your taskbar, click the “Connected to [Network Name]” option in the list that pops up, and then click the name of the wireless network you’re connected to.
When the network information appears, click the “Network” tab and you’ll see the router’s address listed as “Gateway.”
Most Linux desktops have a network icon in their notification area. Typically, you can click this network icon and then select “Connection Information” - or something similar. Look for the IP address displayed next to “Default Route” or “Gateway”.
And now that you know generally what to look for and where, you should also be able to find your router’s IP address without too much trouble on devices we haven’t covered, too. Any device that allows you to connect to the network and view information about the network connection should display it. Just look under the network connection settings for anything listing a gateway, router, or default route address.