How to factory reset D-Link DSL-2640U rev C1 router – Default Login & Password

The D-Link DSL-2640U rev C1 router has 54mbps WiFi, 4 100mbps ETH-ports and 0 USB-ports.
How to factory reset D-Link DSL-2640U rev C1 - Default Login & Password

D-Link DSL-2640U rev C1 default Password , Login & Gateway settings :

If you have performed a reset of your DSL-2640U rev C1 device or not changed the defaults, you
be able to access it with the following settings
Default subnet mask:

How to factory reset (hard reset) D-Link DSL-2640U rev C1 :

You can factory reset your D-Link DSL-2640U rev C1 in the following way(s)
With the reset button
Locate the reset button on the back off the router
While the unit is powered on, press the reset button with a sharp object (e.g. paperclip)
Hold the button pressed for 10 seconds, then release.
The unit will reboot by itself and once the WLAN light stops blinking the factory reset is done.
You can now setup your router again through the user interface

D-Link DSL-2640U rev C1 router specifications :

System specs
CPU: n/a
RAM: 16 MiB
Flash: 4 MiB
Custom firmwares: OpenWrt
WiFi: 54mbps (bg)
WiFi bands
WiFi throughput: n/a
4 x 100mbps ports
USB-ports: 0