I'm not sure how this system exactly works, it does seem far from consistent. I have many other URLs and websites on the same server that didn't come up as 'Not Reporting'
For consistency, I doubt you'd want the report to contain duplicate not-reporting entries for the 6 urls each of the Engineering sites can be accessed from.
The initial report was populated by crawling the Academic Departments directory pages --- http://www.unl.edu/ucomm/depts/
--- which covered the majority of the sites the chancellor was interested in seeing. Any incorrect URLs are from the links contained on those pages (send corrections through the comments link).
Now that the report is out, I don't anticipate adding more sites automatically. So, I would just examine the latest report yourself, and note any inaccuracies you see.
But, for the past report(s) -
At a low level --- the report is accurate, the site noted by that URL has not been reported by the developer who owns that site.
At a high level --- it's easy to see that specific instance you cited is a duplicated URL.
The cause of the problem is duplicate URLs for one site- which I've already noted. I've removed the duplicate entry from the registry --- it will not show up as a duplicate in the next report.
But, I think it is up to the developers to identify their sites - and review the report for accuracy. Especially if they are aware that their site can be accessed from multiple entry points.
Please note any others you find -- this is a large report that the WDN is compiling.