If you take a look at the atlas, you'll see several recognizable badges. One which may not be recognizable is GPN (Great Plains Network). GPN connects Nebraska to OmniPop. Of course, you'll see Internet2, which as of February 2015, UConn is connected. There is also NCSA, which is the National Center for Supercomputing Applications at the University of Illinois.
In 2010 there was a major push by the CIC to upgrade security for assets being/ going to be shared over OmniPop. The Blue Waters Supercomputer at NCSA is one of those assets. Curiously enough, the CIC universities chose to participate in a joint credentialing process with two other universities: the University of Washington and Virginia Tech. A nice synopsis of this lengthy process is detailed at the NCSA's Cyber Security website:
InCommon Silver Certification. Virginia Tech was the first to reach the highest 'silver' credential, and VPI's process has severed as a case study for the CIC although the credentialing process is still ongoing.