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: 54.145.83.79. Find IP location for: 230.171.139.105, 228.194.35.110, 3.4.30.49, 90.199.72.78, 178.176.20.25, 147.14.179.253, 99.27.86.239, 138.151.23.108, 175.119.32.168, 72.195.68.101, 71.198.181.39.
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