We check this website, now confluencecenter.test.webservices.umich.edu is up and dont blocked for our system and other users of the Internet.
So, answer to question: Is confluencecenter Down Right Now? - NO! confluencecenter is up!
If you have problem with access to site confluencecenter, and domain confluencecenter.test.webservices.umich.edu is not avalible.
Clear browser cache and/or try other web browser
(Chrome, Firefox or Safari).
Check your network setting, and contact your ISP
support if its needed.
Also, check your hosts file (wikipedia about
hosts file) for some records about domain confluencecenter.test.webservices.umich.edu. And try to remove it.