What an IP address is and why you need to find it

An IP address is a number that identifies a device on your network — like a mailing address for your computer, phone, or printer. When you're setting up a find home network, you often need to find the IP address of a device to log into its settings, check what's connected to your router, or troubleshoot why something isn't working.

Every device that connects to your network gets an IP address. Your router assigns these automatically (called DHCP), or you can set them manually. Knowing how to find these addresses is one of the first steps to understanding what's actually on your network and spotting devices you don't recognize.

Key Takeaways

  • Your router's IP address is usually printed on the device itself or in the manual, and you enter it into a web browser to access router settings.
  • On Windows, open Command Prompt and type ipconfig to see your computer's IP address and your router's address (listed as "Default Gateway").
  • On Mac or Linux, open Terminal and type ifconfig or ip addr to find the same information.
  • To see all devices connected to your network, log into your router's settings page and look for a "Connected Devices" or "DHCP Clients" section.
  • IP addresses that start with 192.168, 10.0, or 172.16 are private addresses used only on your home network and cannot be reached from the internet.

Finding your router's IP address

Your router's IP address is the gateway to its settings page. Most home routers use one of three standard addresses: 192.168.1.1, 192.168.0.1, or 10.0.0.1. The exact address is usually printed on a sticker on the back or bottom of the router itself.

To access your router's settings, open any web browser, type the IP address into the address bar (just like you would a website), and press Enter. You'll be asked for a username and password — these are also often printed on the router or in the manual. If you've changed them and forgotten them, you can reset the router to factory defaults by holding a small reset button for 10 to 15 seconds, which will restore the original username and password.

Once you're logged in, you can see which devices are connected, change your Wi-Fi password, update security settings, and check for firmware updates. This is where most of your network security happens.

Finding your computer's IP address on Windows

Open the Start menu and search for Command Prompt. Click to open it. Type the command ipconfig and press Enter. You'll see a list of information about your network connection.

Look for the section labeled with your network adapter name (usually "Ethernet" if you're plugged in with a cable, or "Wireless LAN adapter Wi-Fi" if you're on Wi-Fi). In that section, find the line that says IPv4 Address — that's your computer's IP address on your network. Just above it, you'll see Default Gateway, which is your router's IP address.

If you need to see this information regularly, you can also right-click the network icon in the bottom right corner of your screen, select "Network and Internet settings," then scroll down and click "Advanced network options." This shows the same information in a graphical window instead of Command Prompt.

Finding your computer's IP address on Mac or Linux

On a Mac, open Spotlight (press Command + Space), search for Terminal, and open it. Type the command ifconfig and press Enter. On Linux, open a terminal and type ip addr instead.

Look for the section labeled en0 (on newer Macs) or eth0 (on Linux with a wired connection), or en1 or wlan0 (for Wi-Fi). Find the line that starts with inet — the number after it is your IP address. The line that says inet netmask shows your router's address as the gateway.

If the output is long and hard to read, you can narrow it down. On Mac, type ifconfig | grep inet to show only the lines with IP addresses. On Linux, type ip addr show for a cleaner format.

Seeing all devices connected to your network

Log into your router using the IP address and password from earlier. Look for a section called Connected Devices, DHCP Clients, Device List, or Attached Devices — the exact name varies by router brand. This page shows every device currently on your network, along with its IP address and often its device name (like "iPhone" or "Samsung TV").

This is where you spot devices you don't recognize. If you see something you don't own or remember connecting, that's a sign someone else may have access to your network. You can block unknown devices from the same page, usually by clicking a button next to the device name.

Some routers also show the device's MAC address (a different kind of identifier) and how much data it's using. If a device is using a lot of bandwidth and you don't recognize it, blocking it is a quick security step.

Understanding private versus public IP addresses

IP addresses on your home network always start with 192.168, 10.0, or 172.16. These are private IP addresses — they only work inside your home network and cannot be reached from the internet. This is by design and is one reason your home network is naturally protected.

Your router has a different IP address when it talks to the internet — a public IP address assigned by your internet provider. This is the address that websites see when you visit them. You can find your public IP address by searching "what is my IP" in any search engine, but you don't need it for home network tasks.

When setting up devices on your network, always use the private addresses (the ones starting with 192.168, 10.0, or 172.16). Never try to reach a home device from outside your network using its private IP address — it won't work. If you need remote access to a device, that's a separate setup involving your router's port forwarding or a VPN, which is beyond basic network lookup.

What to do if you can't find a device's IP address

If a device isn't showing up in your router's connected devices list, it may not actually be connected. Check that the device is turned on, that Wi-Fi is enabled, and that it's connected to the correct network name (SSID). Some devices show a Wi-Fi icon when connected; if it's missing, the device isn't on your network.

If the device is connected but not showing in the list, try restarting the device. Some routers also take a minute or two to update the connected devices list, so wait a few seconds and refresh the page. If it still doesn't appear, check the device's own network settings to confirm it received an IP address — this is usually under Wi-Fi settings or Network settings on the device itself.

For older devices or devices that rarely connect, the router may have assigned them an IP address in the past but removed them from the active list. You can usually see these in a separate section called "DHCP Reservation" or "Device History," depending on your router.

Frequently Asked Questions

Can someone see my IP address and use it to hack me?

Your public IP address (the one the internet sees) is visible to websites you visit, but it only tells someone your internet provider and general location — not your home address. They cannot use it alone to hack into your devices. Your router's firewall blocks incoming connections by default, which is why you need to open ports deliberately if you want remote access to something.

Why does my device have a different IP address every time I connect?

Your router assigns IP addresses automatically using DHCP. Each time a device connects, it may get a different address from the available pool. If you want a device to always have the same IP address, you can set a static IP address on the device itself or create a DHCP reservation in your router settings, which tells the router to always give that device the same address.

What's the difference between IPv4 and IPv6?

IPv4 addresses look like 192.168.1.5 (four numbers separated by dots). IPv6 addresses look like 2001:0db8::1 (letters and numbers separated by colons) and provide many more possible addresses. Most home networks still use IPv4, but newer devices and routers support both. For home network setup, you usually only need to work with IPv4.

Is it safe to share my IP address?

Sharing your public IP address is generally safe — websites already know it when you visit them. Never share your private IP addresses (the 192.168 ones) with people outside your home, as they could use them to try to access your devices if they're on your network. Your router's login credentials should never be shared with anyone.

How do I find the IP address of a printer or smart home device?

The easiest way is to log into your router and look at the connected devices list — printers and smart devices show up there with their IP addresses. You can also check the device's own settings menu (usually under Wi-Fi or Network settings) to see what IP address it was assigned. Once you have the IP address, you can type it into a web browser to access the device's settings page, just like you do with the router.