When you go to www.arstatejobs.com, go to section labeled Username and Password.
Using the username and password that you created, log into the site.
You will be taken to another screen that has 3 tabs. These tabs read, Home, Preferences, and My Application.
Click on the Home tab. You should see a list that reads, Positions you have applied for. If the job is listed here, then it was received by the agency.