I came across this nice little MVC routing checker by Phil Haacket
http://haacked.com/archive/2008/03/13/url-routing-debugger.aspx
Simple to use just add
RouteDebug.RouteDebugger.RewriteRoutesForTesting(RouteTable.Routes);
in to the Application_Start of your Global.asax and it does all the reporting on all your Routings
RouteDebug-Binary.zip (4.80 kb)
RouteTesterDemo.zip (16.81 kb)