How To Find Modem Ip Address Behind Router?

In today’s world, the internet is an inevitable part of our lives. With the rise of technology, the need for routers has also increased as they provide a gateway for various devices to connect to the internet. Routers also have their IP addresses, but what most people don’t know is that they hide the IP address of the modem they are connected to.

Finding the modem IP address behind the router can be a daunting task for many. However, it is a crucial need in situations like configuring port forwarding or changing wireless settings. Despite being hidden, the modem IP address behind the router is nevertheless important as it allows you to access and make changes to the modem settings. In this article, we will discuss various ways to find the modem IP address behind the router, making it an easy task for you.

How to Find Modem IP Address Behind Router?

When you use a router to connect to the internet, all of the devices on your network share the same external IP address. However, each device on the network also has its own unique internal IP address. This includes your modem, which is used to connect to your internet service provider.

If you need to access your modem’s web interface or make changes to its settings, you’ll need to know its IP address. Here are the steps to find it:

1. Determine the default gateway address: The default gateway is the IP address of your router. You can usually find it by opening the command prompt or terminal on your computer, typing “ipconfig” or “ifconfig”, and looking for the “default gateway” entry. Note down the address.

2. Access the router’s web interface: Open a web browser and enter the default gateway address in the address bar. You’ll be prompted to enter your router’s username and password. If you haven’t changed these from the default, you can usually find them in the router’s documentation or online.

3. Find the modem’s IP address: Once you’re logged in to the router’s web interface, look for a section called “connected devices”, “DHCP clients”, or something similar. This should list all of the devices currently connected to the router, along with their internal IP addresses. Look for the entry that corresponds to your modem (sometimes labeled as a “cable modem”, “DSL modem”, or “modem router”). Note down its IP address.

If you can’t find the modem’s IP address using this method, it’s possible that your modem has a different default IP address than the typical address. In that case, you’ll need to consult your modem’s documentation or contact your internet service provider for assistance.


1. What is a modem IP address?
The modem IP address is a unique numerical identifier assigned to the modem that allows it to connect to the internet and communicate with other devices on the network.

2. Why would you need to find the modem IP address behind a router?
You may need to access the modem’s settings or troubleshoot connection issues, and the router may be blocking direct access to the modem’s IP address.

3. How do you find the modem IP address behind a router?
To find the modem IP address behind a router, you can use the command prompt or network settings on a connected device to view the gateway address, which will be the router’s IP address. From there, you can log in to the router’s settings and view the connected devices to locate the modem’s IP address.

4. Can you access the modem settings through the router?
Yes, you can access the modem settings through the router settings by logging in to the router’s admin panel and navigating to the connected devices section. From there, you can view the modem’s IP address and access its settings.

5. What should you do if you are unable to locate the modem IP address behind the router?
If you are unable to locate the modem IP address behind the router, you may need to consult the modem’s documentation or contact the manufacturer for support. Alternatively, you can try resetting the modem or router to default settings and following the setup process again.


In today’s world, having an internet connection is a must-have. We use it for work, entertainment, and communication. If you want to access your modem settings, you need to know the modem IP address. However, finding it behind the router can be a bit tricky. But, with the right steps and tools, it’s possible. You can use the command prompt, router settings, or third-party software to find your modem IP address. We hope that our guide has helped you find your modem IP address and gain control over your network settings. So, go ahead and explore the possibilities that come with knowing your modem IP address.

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