192.168.1.1 (most common) or 192.168.0.1 . Default Username: admin . Default Password: admin .
Like most ZTE GPON ONT (Optical Network Terminal) devices, the F6640 comes with factory-set credentials. These are used to access the router's web interface for the first time.
If the device has never been configured by an ISP or has been hard-reset, the default credentials are: zte f6640 password
Whether you need to change your Wi-Fi name, configure port forwarding, or secure your network, this guide covers everything you need to know about the ZTE F6640 password and gateway management. 1. Default ZTE F6640 Login Credentials
Insert a straightened paperclip or a SIM ejector tool into the hole. Press and hold the button down for . Like most ZTE GPON ONT (Optical Network Terminal)
If you cannot find the correct admin password, you can try the following methods.
Many internet providers flash custom firmware onto the ZTE F6640, changing the default administrator credentials. If the label details do not work, try these common combinations: admin admin Universal default user user Standard user access administrator password Common legacy default telecomadmin admintelecom Common for Huawei/ZTE fiber networks How to Log In to the ZTE F6640 Gateway configure port forwarding
For most devices, the standard login credentials are as follows: Gateway IP : 192.168.1.1 (or occasionally 192.168.0.1 ) Default Username : admin
Because the F6640 is an ISP-grade device, the defaults above often do not work if the ISP has pushed a custom configuration. In many cases:
Use the default username and password mentioned above. If these fail, look for a sticker on the bottom or side of the router labeled "Admin Password" or "Login Password". Changing the Password