What your public IP address is and why you might need it

Your public IP address is the number your internet service provider assigns to your home network so websites and services can send information back to you. It is different from the private IP addresses your devices use to talk to each other inside your home — your router translates between the two.

You may need to know your public IP address to set up remote access to a home computer, troubleshoot a connection problem with your internet provider, or configure port forwarding for a game or process. Most of the time you do not need it, but when you do, there are several quick ways to find it.

Key Takeaways

  • Your public IP address is assigned by your internet service provider and is visible to websites you visit.
  • The fastest way to find it is to visit a website like whatismyipaddress.com or ipchicken.com in any web browser.
  • You can also find your public IP address in your router's settings page, usually accessed by typing 192.168.1.1 or 192.168.0.1 into your browser's address bar.
  • Your public IP address may change periodically unless your internet service provider has assigned you a static IP, which usually costs extra.
  • Write down your public IP address if you need it for a specific task, since it may be different the next time you check.

Using a website to check your public IP address

The simplest method is to visit a website that displays your public IP address automatically. Open any web browser on any device connected to your home network and go to whatismyipaddress.com. The page will show your public IP address at the top, usually in large text. Other sites that do the same thing include ipchicken.com, myip.com, and iplocation.net.

These websites work because they receive your request and send back the IP address they see the request coming from — which is your public IP address. You do not need to enter any information or click anything. The address appears as soon as the page loads. This method works on phones, tablets, and computers, and it takes about five seconds.

Finding your public IP address in your router settings

Your router also knows your public IP address and displays it in its settings page. Open a web browser and type 192.168.1.1 into the address bar, then press Enter. If that does not work, try 192.168.0.1 instead. Your router will ask you to log in — the default username is often "admin" and the default password is often "admin" or "password", though this varies by manufacturer.

Once you are logged in, look for a section called "Status", "Internet", "WAN", or "Network". Your public IP address will be listed there, often next to a label like "WAN IP Address" or "Internet IP Address". Different router brands organize this information in different places, so you may need to look through a few menus. If you cannot find it or cannot log in, check the sticker on the back of your router — it usually has the default login information printed on it.

Understanding dynamic versus static IP addresses

Most home internet customers have a dynamic IP address, which means your internet service provider can change it without warning. This usually happens when your modem restarts, when your service is interrupted, or straightforward on a schedule set by your provider. You might check your public IP address today and find it is different tomorrow.

If you need the same public IP address to stay the same for remote access or other purposes, you can contact your internet service provider and request a static IP address. This costs extra — typically between five and twenty dollars per month depending on your provider — and locks your address in place. Before paying for a static IP, confirm that your provider actually offers it and that the cost is worth what you need it for.

What to do if you cannot find your public IP address

If the website method does not work, your internet connection may be down or your browser may be blocking the page. Try a different website from the list above, or try opening it in a different browser. If none of the websites load, your internet is likely not working, and you should restart your modem and router before trying again.

If you cannot log into your router to check the settings, you may have changed the default password at some point and forgotten it. Most routers have a reset button that erases all settings and returns the device to factory defaults, but this will also erase any custom settings you have made. If you have changed your Wi-Fi password or other settings, resetting the router will undo those changes. Contact your internet service provider if you need help resetting your router without losing your settings.

When you might need your public IP address

Remote access software — programs that let you control a computer from another location — often needs your public IP address to know where to send the connection. If you are setting up remote desktop access or a similar tool, the software will usually ask you for it. Write it down or keep it in a safe place while you are setting up, since you may not remember it later.

Port forwarding, which directs traffic from the internet to a specific device on your home network, also requires your public IP address. Some games and applications use port forwarding to let other players connect to you. Your internet service provider's support team may also ask for your public IP address when troubleshooting connection problems, since they can see what is happening on their end when they know which address to look for.

Frequently Asked Questions

Is my public IP address the same as my private IP address?

No. Your private IP address is used only inside your home network and is assigned by your router. Your public IP address is assigned by your internet service provider and is visible to the outside world. Your router translates between them so your devices can communicate with the internet.

Can someone use my public IP address to hack me?

Your public IP address alone is not enough to hack your device. It tells someone where to send data, but your router's firewall blocks unwanted incoming connections by default. However, do not share your public IP address with people you do not trust, and do not post it on public websites.

Why did my public IP address change?

Your internet service provider assigned you a dynamic IP address, which can change when your modem restarts, when your service is interrupted, or on a schedule set by your provider. If you need the same address every time, contact your provider about a static IP address, which costs extra.

Do I need to know my public IP address for normal internet use?

No. Your public IP address is handled automatically by your router and internet service provider. You only need to know it if you are setting up remote access, port forwarding, or troubleshooting a connection problem with your provider's support team.

What if the website shows a different IP address than my router settings?

They should show the same address. If they do not, restart your modem and check again. If the difference persists, contact your internet service provider, as there may be an issue with how your connection is configured.