root@padme:~# curl -I "http://pbs.twimg.com/profile_images/378800000005095252/6fd76c3bd2acb91b6469ba1f35b3ea46_bigger.jpeg"
HTTP/1.1 200 OK
Accept-Ranges: bytes
content-md5: 5iIHN/Dk6J5tRPG6Uzklag==
Content-Type: image/jpeg
Date: Fri, 14 Feb 2014 04:11:55 GMT
Etag: "5iIHN/Dk6J5tRPG6Uzklag=="
expires: Fri, 21 Feb 2014 04:11:55 GMT
Last-Modified: Mon, 02 Sep 2013 05:35:53 GMT
Server: ECS (fll/0767)
X-Cache: HIT
Content-Length: 2083

root@padme:~# curl -I "https://pbs.twimg.com/profile_images/378800000005095252/6fd76c3bd2acb91b6469ba1f35b3ea46_bigger.jpeg"
HTTP/1.1 200 OK
Accept-Ranges: bytes
content-md5: 5iIHN/Dk6J5tRPG6Uzklag==
Content-Type: image/jpeg
Date: Fri, 14 Feb 2014 04:12:01 GMT
Etag: "5iIHN/Dk6J5tRPG6Uzklag=="
expires: Fri, 21 Feb 2014 04:12:01 GMT
Last-Modified: Mon, 02 Sep 2013 05:35:53 GMT
Server: ECS (fll/075B)
X-Cache: HIT
Content-Length: 2083

root@padme:~# traceroute -n pbs.twimg.com
traceroute to pbs.twimg.com (93.184.216.139), 30 hops max, 60 byte packets
 1  * * *
 2  10.1.236.37  83.702 ms  83.779 ms  83.840 ms
 3  10.1.230.141  82.439 ms  82.535 ms  83.433 ms
 4  10.1.230.38  85.426 ms  85.544 ms  85.821 ms
 5  10.1.230.58  83.924 ms  84.761 ms  84.857 ms
 6  64.215.248.93  582.528 ms  505.852 ms  506.005 ms
 7  213.248.76.189  500.377 ms  500.383 ms  500.411 ms
 8  62.115.33.130  503.461 ms 62.115.33.126  503.441 ms 80.239.128.250  501.347 ms
 9  93.184.216.139  501.120 ms  498.898 ms  500.538 ms