asp.net mvc - how to find which action is firing when a page loads -

asp.net mvc - how to find which action is firing when a page loads -

i have take on maintenance of existing project asp.net mvc application. when main page loads, doing redirect other domain , leaving application. tried tracing see redirect coming from, issue cannot find controller action firing cause happen. searching files in solution url string won't work either because there's redirects on place. tried putting breakpoint in index() method of each controller on site, none of them hit. there easier way find out code executing when load asp.net mvc site within vs2010?

thanks!

asp.net-mvc