Test any URI, by sending custom HTTP request and checking the HTTP response. TestURI.org is a free web-sniffer.net alternative.

Page URI/URL
HTTP version:  HTTP/1.1   HTTP/1.0
User agent:  
HTTP protocol is descibed in RFC 2616.
Your IP is: 216.73.217.10. Find IP location for: 242.41.248.14, 221.46.207.48, 187.15.187.116, 123.51.174.173, 42.184.205.74, 56.209.204.45, 237.156.156.111, 158.61.97.248, 98.249.98.104, 232.236.15.50, 27.16.203.52.
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