Quote Originally Posted by pikabuntu View Post
if this helps, it is a dlink dir-615
According to the dlink website,the default IP address for that router is

Log into the web-based configuration by typing the IP address of the router (default: into your web browser. The username is admin (all lowercase) and the password field should be left blank.
Maybe someone changed the IP address of the router before,but now it has been reset,it has changed back to factory settings.

Good Luck