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ubuntu@ubuntu ext4derp/pwads $ nc i.imgur.com 80
HEAD /kEka7.png HTTP/1.1
Host: i.imgur.com

HTTP/1.1 200 OK
Accept-Ranges: bytes
Cache-Control: max-age=315360000
Content-Type: image/png
Date: Mon, 30 Jul 2012 06:45:23 GMT
ETag: "40e960f26489ad267d3fde276c07db5c"
Expires: Tue, 05 Jan 2038 12:58:19 GMT
Last-Modified: Sat, 16 Jun 2012 10:37:35 GMT
Server: ECAcc (dfw/567A)
X-Cache: HIT
Content-Length: 28525