On a sunny day (Wed, 16 Dec 2009 23:01:05 -0000) it happened "markp" wrote in :
grml: ~ # telnet 121.199.253.175 80 Trying 121.199.253.175... Connected to 121.199.253.175. Escape character is '^]'
(Typed anything, wrong request) http:
501 Method Not Implemented
Method Not Implemented http: to /index.php not supported.
Apache/2.0.46 (Red Hat) Server at url4.hichina.com Port 80
Connection closed by foreign host.
All of China runs Linux :-)
You can see teeh server is url4.hichina.com, so hichina.com could be the ISP.
So do a whois hichina.com and you know all about it.
(I just did, but think I should not publish it here, Verisign has lost of legal text in the reply...).