If you need to login to the Asus RT-N66U router, then this guide shows you how.
Other Asus RT-N66U Guides
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This is the login guide for the Asus RT-N66U. We also have the following guides for the same router:
- Asus RT-N66U - How to change the IP Address on a Asus RT-N66U router
- Asus RT-N66U - Asus RT-N66U User Manual
- Asus RT-N66U - Asus RT-N66U Port Forwarding Instructions
- Asus RT-N66U - How to change the DNS settings on a Asus RT-N66U router
- Asus RT-N66U - Setup WiFi on the Asus RT-N66U
- Asus RT-N66U - How to Reset the Asus RT-N66U
- Asus RT-N66U - Information About the Asus RT-N66U Router
- Asus RT-N66U - Asus RT-N66U Screenshots
- Asus RT-N66U Tomato v1.28 - Asus RT-N66U Login Instructions
- Asus RT-N66U Tomato v1.28 - How to Reset the Asus RT-N66U
- Asus RT-N66U Tomato v1.28 - Asus RT-N66U Screenshots
- Asus RT-N66U Tomato v1.28 - Information About the Asus RT-N66U Router
- Asus RT-N66U v3.0.0.4.382_51636 - Asus RT-N66U Screenshots
- Asus RT-N66U v3.0.0.4.382_51636 - Information About the Asus RT-N66U Router
- Asus RT-N66U v3.0.0.4.382_51636 - Reset the Asus RT-N66U
- Asus RT-N66U v3.0.0.4.382_51636 - Login to the Asus RT-N66U
- Asus RT-N66U v5 Sabai - How to change the IP Address on a Asus RT-N66U router
- Asus RT-N66U v5 Sabai - Asus RT-N66U Login Instructions
- Asus RT-N66U v5 Sabai - How to change the DNS settings on a Asus RT-N66U router
- Asus RT-N66U v5 Sabai - Setup WiFi on the Asus RT-N66U
- Asus RT-N66U v5 Sabai - How to Reset the Asus RT-N66U
- Asus RT-N66U v5 Sabai - Asus RT-N66U Screenshots
- Asus RT-N66U v5 Sabai - Information About the Asus RT-N66U Router
Find Your Asus RT-N66U Router IP Address
In order to login to the Asus RT-N66U router, we need to know it's internal IP address.
Known RT-N66U IP Addresses |
---|
192.168.1.1 |
Choose an IP address from the list above and then follow the rest of this guide.
If you do not find your router's interface later in this guide, then try a different IP address. Keep trying different IP addresses until you find your router. It is harmless to try different IP addresses.
If, after trying all of the above IP addresses, you still cannot find your router, then try the following:
- Follow our Find Your Router's Internal IP Address guide.
- Use our free Router Detector software.
Choose an internal IP Address using one of the above methods and then try to login to your router.
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Login to the Asus RT-N66U Router
Your Asus RT-N66U is managed through a web-based interface. You can manage it by using a web browser such as Chrome, Firefox, or Edge.
Enter Asus RT-N66U Internal IP Address
Put the internal IP Address of your Asus RT-N66U in the address bar of your web browser. The address bar will look like this:
Press the Enter key on your keyboard. You will see a window asking for your Asus RT-N66U password.
Asus RT-N66U Default Username and Password
You need to know your username and password to login to your Asus RT-N66U. Just in case the router's username and password have never been changed, you may want to try the factory defaults. Here is a list of all known factory default usernames and passwords for the Asus RT-N66U router.
Asus RT-N66U Default Usernames and Passwords | |
---|---|
Username | Password |
admin | admin |
In the window that pops up, enter your username and password. You should be able to try them all.

Asus RT-N66U Home Screen
You should now see the Asus RT-N66U home Screen, which looks similar to this:

If you see this screen, then you know that you are logged in to your Asus RT-N66U router. Now you can follow any of our other guides for this router.
Solutions To Asus RT-N66U Login Problems
If things are not going right and you are unable to login to your router, then here are some other things that you can try.
Asus RT-N66U Password Doesn't Work
Your router's factory default password might be different than what we have listed here. Be sure to try other Asus passwords. Here is our list of all Asus Passwords.
Forgot Password to Asus RT-N66U Router
If your ISP provided your router, then you may have to call them and ask them if they know how to login to your router. Sometimes they will have your password on file.
How to Reset the Asus RT-N66U Router To Default Settings
If all else fails and you are unable to login to your router, then you may have to reset it to its factory default settings. Our How To Reset your Router guide can help you reset your router to factory defaults.
Other Asus RT-N66U Guides
Here are some of our other Asus RT-N66U info that you might be interested in.
This is the login guide for the Asus RT-N66U. We also have the following guides for the same router:
- Asus RT-N66U - How to change the IP Address on a Asus RT-N66U router
- Asus RT-N66U - Asus RT-N66U User Manual
- Asus RT-N66U - Asus RT-N66U Port Forwarding Instructions
- Asus RT-N66U - How to change the DNS settings on a Asus RT-N66U router
- Asus RT-N66U - Setup WiFi on the Asus RT-N66U
- Asus RT-N66U - How to Reset the Asus RT-N66U
- Asus RT-N66U - Information About the Asus RT-N66U Router
- Asus RT-N66U - Asus RT-N66U Screenshots
- Asus RT-N66U Tomato v1.28 - Asus RT-N66U Login Instructions
- Asus RT-N66U Tomato v1.28 - How to Reset the Asus RT-N66U
- Asus RT-N66U Tomato v1.28 - Asus RT-N66U Screenshots
- Asus RT-N66U Tomato v1.28 - Information About the Asus RT-N66U Router
- Asus RT-N66U v3.0.0.4.382_51636 - Asus RT-N66U Screenshots
- Asus RT-N66U v3.0.0.4.382_51636 - Information About the Asus RT-N66U Router
- Asus RT-N66U v3.0.0.4.382_51636 - Reset the Asus RT-N66U
- Asus RT-N66U v3.0.0.4.382_51636 - Login to the Asus RT-N66U
- Asus RT-N66U v5 Sabai - How to change the IP Address on a Asus RT-N66U router
- Asus RT-N66U v5 Sabai - Asus RT-N66U Login Instructions
- Asus RT-N66U v5 Sabai - How to change the DNS settings on a Asus RT-N66U router
- Asus RT-N66U v5 Sabai - Setup WiFi on the Asus RT-N66U
- Asus RT-N66U v5 Sabai - How to Reset the Asus RT-N66U
- Asus RT-N66U v5 Sabai - Asus RT-N66U Screenshots
- Asus RT-N66U v5 Sabai - Information About the Asus RT-N66U Router