$ curl -I internet.org
  HTTP/1.1 500 Internal Server Error
  Cache-Control: private, no-cache, no-store, must-revalidate
  Expires: Sat, 01 Jan 2000 00:00:00 GMT
  Pragma: no-cache
  X-Content-Type-Options: nosniff
  X-Frame-Options: DENY
  X-XSS-Protection: 0
  Content-Type: text/html; charset=utf-8
  X-FB-Debug: Q53Om08biBAOirbDYg7CRjyKwOcOVNfUS84qNIvY7SU=
  Date: Wed, 06 Nov 2013 11:40:27 GMT
  Connection: keep-alive
  Content-Length: 0