I need to compile a list of the addresses of all the CDNs used by Facebook.
Example:
fbcdn-sphotos-a.akamaihd.net
fbstatic-a.akamaihd.net
...
I need these for a captive portal application that allows user to connect to WiFi with facebook. We allow facebook.com through the firewall for Graph API calls, but one of the issues we had is that the Facebook login dialog takes forever to load and loads without stylesheets/images. We fixed that by white-listing fbstatic-a.akamaihd.net, but we want to make sure we won't have surprises later.
fbstatic-a.akamaihd.net
fbcdn-profile-a.akamaihd.net
fbcdn-sphotos-a-a.akamaihd.net
fbcdn-creative-a.akamaihd.net
fbexternal-a.akamaihd.net
And:
fbcdn-sphotos-b-a.akamaihd.net
fbcdn-sphotos-c-a.akamaihd.net
fbcdn-sphotos-d-a.akamaihd.net
fbcdn-sphotos-e-a.akamaihd.net
fbcdn-sphotos-f-a.akamaihd.net
fbcdn-sphotos-g-a.akamaihd.net
fbcdn-sphotos-h-a.akamaihd.net
Those start from character A and ends at H, if Facebook would add a new domain it must be like :
fbcdn-sphotos-i-a.akamaihd.net
So future CDN domains would be
fbcdn-sphotos-j-a.akamaihd.net
fbcdn-sphotos-k-a.akamaihd.net
fbcdn-sphotos-l-a.akamaihd.net
fbcdn-sphotos-m-a.akamaihd.net
fbcdn-sphotos-n-a.akamaihd.net
And So on.. till character Z