Due to the current gap in continued funding from the U.S. National Science Foundation (NSF), the NSF Unidata Program Center has temporarily paused most operations. See NSF Unidata Pause in Most Operations for details.

EDU versus non-EDU institutions represented for nominations mailing list subscription data: Apr 1 2010 to Mar 31 2011

EDU institutions = US and international degree granting universities, colleges and technical schools and EDU entities. Undetermined/misc data = foreign addresses with no identifying domain convention (e.g., 'ac'), etc.
Note: The chart above is interactive - click on the pie pieces to see the data.