The IP Address you are going to specify must be the "last" server your institution's computers pass through to access the Internet.
Your IP Address is : 18.97.9.169
If this IP address is not on your list of IP Addresses, there is a component inside or outside your network that does not allow your IP Address of that server to be recognized outside your networks.
The reasons for this could be: - Institution's firewall server might be causing your IP Address to be 'masked'. - Institution's proxy server might be passing through your ISP or district's server for access.
Therefore, if your institution uses proxy or firewall servers , please specify the relevant IP Address so that your institution can access EOLSS On-Line.