Solution: "Virtual Hosts"
Example: all of the following names map to 140.247.197.241
This is required for HTTP 1.1 requests.
HEAD /http/raspberry.gif HTTP/1.1
Host: cscie12.dce.harvard.edu
HTTP/1.1 200 OK
Date: Tue, 8 Apr 2015 20:23:14 GMT
Server: Apache/2.2 (Fedora)
Last-Modified: Wed, 06 Apr 2005 19:30:42 GMT
ETag: "461fb8-348c-a0f67c80"
Accept-Ranges: bytes
Content-Length: 13452
Connection: close
Content-Type: image/gif
Connection closed by foreign host.
Copyright © David Heitmeyer