You can access the most commonly used list of the default modem password from table. Usually many modem or router brand, to access the administration panel uses 192.168.1.1 IP address.The second most popular is the IP address used 192.168.0.1

Modem BrandLogin IPUsernamePassword
3Comhttp://192.168.1.1adminadmin
Belkinhttp://192.168.2.1
BenQhttp://192.168.1.1adminadmin
D-Linkhttp://192.168.0.1admin
Digicomhttp://192.168.1.254adminmichelangelo
Digicomhttp://192.168.1.254userpassword
Digicomhttp://192.168.1.254adminmichelangelo
Linksyshttp://192.168.1.1adminadmin
Netgearhttp://192.168.0.1adminpassword
Sitecomhttp://192.168.0.1sitecom
Thomsonhttp://192.168.1.254useruser
US Roboticshttp://192.168.1.1adminadmin

Note: Still unable to gain access to these passwords, you must reset the reset button on the back of your modem.