naciscdn.org is down?

I'm currently using a script which uses the CDN of NACIS. But for some reason their CDN is down and I'm getting the following error.

Traceback (most recent call last):
  File "scripts/get-external-data.py", line 294, in <module>
    main()
  File "scripts/get-external-data.py", line 230, in main
    download = s.get(source["url"], headers=headers)
  File "/usr/lib/python3/dist-packages/requests/sessions.py", line 533, in get
    return self.request('GET', url, **kwargs)
  File "/usr/lib/python3/dist-packages/requests/sessions.py", line 520, in request
    resp = self.send(prep, **send_kwargs)
  File "/usr/lib/python3/dist-packages/requests/sessions.py", line 630, in send
    r = adapter.send(request, **kwargs)
  File "/usr/lib/python3/dist-packages/requests/adapters.py", line 508, in send
    raise ConnectionError(e, request=request)
requests.exceptions.ConnectionError: HTTPSConnectionPool(host='naciscdn.org', port=443): Max retries exceeded with url: /naturalearth/110m/cultural/ne_110m_admin_0_boundary_lines_land.zip (Caused by NewConnectionError('<urllib3.connection.VerifiedHTTPSConnection object at 0x7f501cfe44e0>: Failed to establish a new connection: [Errno 110] Connection timed out',))

Does anyone have any idea why their CDN is down and when I could expect it to be available again?

Current status