This guide shows you exactly how to login to the Sagemcom Fast 3864AC router.
Other Sagemcom Fast 3864AC Guides
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This is the login guide for the Sagemcom Fast 3864AC 8.389 Optus. We also have the following guides for the same router:
Find Your Sagemcom Fast 3864AC Router IP Address
Before you can log in to your Sagemcom Fast 3864AC router, you need to figure out it's internal IP address.
| Known Fast 3864AC IP Addresses |
|---|
| 192.168.0.1 |
You may have to try using a few different IP addresses from the list above. Just pick one and then follow the rest of this guide.
If later on in this guide you do not find your router using the IP address that you pick, then you can try different IP addresses until you get logged in. It is harmless to try different IP addresses.
If, after trying all of the above IP addresses, you still cannot find your router, then you have the following options:
- Follow our guide called Find Your Router's Internal IP Address.
- Use our free software called Router Detector.
The next step is to try logging in to your router.
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Login to the Sagemcom Fast 3864AC Router
Your Sagemcom Fast 3864AC router has a web interface. In order to log in to it, you need to use a web browser, such as Chrome, Firefox, or Edge.
Enter Sagemcom Fast 3864AC Internal IP Address
Type the internal IP address that you picked above in the address bar of your web browser. The address bar looks like this:
Press the Enter key on your keyboard. You will see a window asking for your Sagemcom Fast 3864AC password.
Sagemcom Fast 3864AC Default Username and Password
You need to know your username and password to login to your Sagemcom Fast 3864AC. Just in case the router's username and password have never been changed, you may want to try the factory defaults. Below is a list of all known Sagemcom Fast 3864AC default usernames and passwords.
| Sagemcom Fast 3864AC Default Usernames and Passwords | |
|---|---|
| Username | Password |
| printed on router | printed on router |
Enter your username and password in the window that pops up. You should be able to try them all.
Sagemcom Fast 3864AC Home Screen
If your password is correct then you will be logged in and see the Sagemcom Fast 3864AC home screen, which looks like this:
When you see this screen, then you are logged in to your Sagemcom Fast 3864AC router. At this point, you can follow any of our other guides for this router.
Solutions To Sagemcom Fast 3864AC Login Problems
Here are some things that you can try if you are having problems getting logged in to your router.
Sagemcom Fast 3864AC Password Doesn't Work
Perhaps your router's default password is different than what we have listed here. You should try other Sagemcom passwords. Head over to our list of all Sagemcom Passwords.
Forgot Password to Sagemcom Fast 3864AC Router
If you are using an ISP provided router, then you may need to call their support desk and ask for your login information. Most of the time they will have it on file for you.
How to Reset the Sagemcom Fast 3864AC Router To Default Settings
The last option when you are unable to get logged in to your router is to reset it to the factory defaults. Our How To Reset your Router guide can help you reset your router to factory defaults.
Other Sagemcom Fast 3864AC Guides
Here are some of our other Sagemcom Fast 3864AC info that you might be interested in.
This is the login guide for the Sagemcom Fast 3864AC 8.389 Optus. We also have the following guides for the same router: