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: 216.73.216.165. Find IP location for: 136.45.19.201, 222.23.145.168, 58.30.214.205, 155.114.168.111, 25.81.83.87, 83.179.134.154, 155.112.89.109, 161.62.210.78, 145.29.144.56, 63.120.137.250, 196.250.204.189.
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