I guess, what stops me from going to a site like this: http://www.routingnumbers.org/ http://www.routingnumbers.org/ Finding a routing number for my appropriat

I guess, what stops me from going to a site like this: http://www.routingnumbers.org/ http://www.routingnumbers.org/ Finding a routing number for my appropriate zip code, and inputting a valid account number?