telnet 206.18.98.175 80
Trying 206.18.98.175...
Connected to 206.18.98.175.
Escape character is '^]'.
GET / HTTP/1.0
HTTP/1.0 504 Web Acceleration Client Error (400.3) - Missing Host Field in Request Header
Content-type: text/html
Content-length: 420
<TITLE>Web Acceleration Client Error (400.3) - Missing Host Field in Request Header</TITLE><B><font face=arial color=#3642a2>Web Acceleration Client Error (400.3) - Missing Host Field in Request Header</font></B><font style=normal face=arial size=2px><P>The Web Acceleration Client received a request whose request header contains a relative URL but the request header does not also contain a valid host field.<P></font>Connection closed by foreign host.