update: they appear to be back online at their usual address:
http://nsarchive.gwu.edu/

- z

On Mon, Dec 26, 2016 at 2:41 AM, Georgi Guninski <guninski@guninski.com> wrote:

On Sun, Dec 25, 2016 at 09:23:25AM -0800, Rayzer wrote:
> The nsarchive.gwu.edu page now redirects to GWU's home page.
>
They are still archived on https://archive.org
Searching there without "http" returns some tarballs too.