Finding the default username and password of the main routers and operators is not easy.On some occasions, the form of access comes in the instruction manual, in others on a sticker on the router itself.The third alternative is to search the Internet in the hope of finding it.Now, we have a new option called Router Default Passwords and it is nothing more than a tool to know the default IP address, username and password.You type 192.168.1.1 or 192.168.0.1 in the browser's address bar with the intention of accessing the router's settings to change aspects such as IP addresses, DHCP, security or WiFi.However, as soon as you access that address, a window asks you for the router username and password to grant us access.If we have not changed it, the normal thing is that we have the username and password assigned by default by the manufacturer of the equipment or by the operator that has supplied us with it.In this case, we can relatively easily recover those access credentials.If we have changed the password and we have forgotten it, I am afraid that we have no choice but to reset the router using the physical button on the back (with few exceptions).Luckily, we have an alternative in the form of a free tool for Windows that helps us discover the router's access IP along with its default username and password.Although normally we will have to type something like 192.168.1.1 or 192.168.0.1, it is possible that the manufacturer has defined another address.In the case of the username and password, that of “admin”, “1234” and similar combinations is becoming a thing of the past, so it is no longer so easy to access with a few tests.The first thing we will do is download Router Default Passwords, a tool that does not require installation and that works on Windows 7, Windows 8.1 and Windows 10.The tool is capable of detecting the IP address of the router and offers us a list of default passwords that we can locate according to the manufacturer of the model in question.To do this, we will click on the top menu to choose the manufacturer of the router or the operator that gives us Internet service.