Cannot access visual host of some end user!

[kojang]

Sorry for My English, not my native.

I use ubuntu minimal 32bit running ispcp-omega-1.0.7-rc1 on http://173.0.52.18

Direct access domain is http://www.rangsithosting.co.cc

Have problem that not access default page of end user automatic direct to http://www.rangsithosting.co.cc

this is end user domain :
http://www.wpvariety.com
http://www.chamai-skr.co.cc
http://thanyaboon.co.cc // I don't know how this domain has only work...

please help me, thank you for your reply.

Koichi A.

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I forget to say my name server are

ns1.wpvariety.com
ns2.wpvariety.com

they ips are 173.0.52.18