On another note it is easy to shame the CIA for making such a basic mistake as using subsequent IP numbers/same file layouts on sites. Of course they should be, but funnily enough mistakes such as these happen in every intelligence service. As example would be the Russian military intelligence (GRU/GU) who have for years sent agents abroad with fake/cleaned Russian passports. Only problem being of course that the passport numbers were sequential and as in the case of the CIA websites, if you identified one agent and his passport, you could look up the next ones in line on databases and identify all the other active agents as well.
Reference for GRU passports: https://www.voanews.com/a/russia-gru-operatives-unmasked/460...