What to KnowEnter ipconfig (Windows) or ifconfig (for Mac and Linux) in your Command Prompt/Terminal and look for the Default Gateway.Open a web browser and enter your modem's IP address in the URL bar to log into your modem and access the admin interface.Manufacturers typically print the IP address, default user name (sometimes listed as SSID), and password on the bottom of the modem.
This article explains how to find a modem's IP address. Instructions apply broadly to all modems and router-modem combos.
How to Find a Modem IP Address
Follow these steps to find your cable modem's IP address:
Connect your computer to your modem (or a router connected to the modem) using an Ethernet cable.
Open the Windows Command Prompt, the Linux Terminal, or the Terminal on Mac.
Type ipconfig (Windows) or ifconfig (for Mac and Linux) and press Enter.
Look for the Default Gateway line to find the IP address represented by a string of numbers and periods.
You might also find the IP address printed on the back or underside of the modem, along with the user name and password.
Why Do You Need a Modem's IP Address?
You'll need to know your modem's IP address if you want to log in to your modem. Open a web browser, enter your modem's IP address in the URL bar, then enter the user name and password to bring up the admin interface.
From there, you can check your connection status, change the password, clear the events log, and more. You may also need to know a modem's IP address when setting up a computer network.
Find Your Modem's User Name and Password
Your modem's user name, password, and IP address may be on the side or bottom of the modem. If the information you need isn't there, consult the manual or search Google for your modem's model's default user name and password. If you've changed the default user name and password, you can reset your modem to factory settings by inserting a straightened paperclip into the small hole on the back of the modem.
If you're having trouble logging into your modem, enter the IP address in a different browser, check the physical connections, and/or disable any web security tools.
Does a Modem Have an IP Address?
All modems have a unique IP address, allowing other devices (computers, printers, etc.) to communicate with them. Your modem's IP address may or may not be the same as the router's IP address, but if you have a router-modem combination unit, they are probably the same.
The steps for finding your modem's IP address are essentially the same as finding your local IP address.