Here is an interactive, zoomable map of all 13,993 C-band satellite downlink sites registered as of 10/22/2018 with the FCC. It works on mobile devices, too.
If you haven’t registered your sites yet, you have until October 31, 2018 to do so if you want to have any protection against future interference from 5G.
See http://bit.ly/2JyLnhU for instructions how.
And in case you haven’t heard, the C-Band Alliance (“CBA”) has now upped their ante to 200 MHz of bandwidth they think they can clear out of the C-band 4 GHz spectrum. See http://bit.ly/2PhUNFs for an article about the updated offer.