How to factory reset D-Link DSL-2640S router – Default Login & Password

The D-Link DSL-2640S router has 300mbps WiFi, 100mbps ETH-ports and 0 USB-ports.
It is also known as the D-Link Wireless ADSL2+ Modem Router.
How to factory reset D-Link DSL-2640S - Default Login & Password

D-Link DSL-2640S default Password , Login & Gateway settings :

If you have performed a reset of your DSL-2640S 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-2640S :

You can factory reset your D-Link DSL-2640S 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-2640S router specifications :

System specs
CPU: 320 MHz
RAM: 64 MiB
Flash: 8 MiB
Custom firmwares: None
WiFi: 300mbps (bgn)
WiFi bands
WiFi throughput: n/a
USB-ports: 0