写的很简单，只是实现了功能

<%
Function formaturl(yes)
If mid(yes,5,1)<>"" then
yes1 = left(yes,3)
yes2 = right(yes,cint(len(yes))-3)
formaturl = yes1 & "." & yes2
else
formaturl=yes
end if
End Function
\'取得远程网页二进制源代码
Function getBoy(url)
\'on error resume next
Set objXml = Server.CreateObject("Microsoft.XmlHttp")
with objXml
.open "get",url,false,"",""
.send
getBoy = .responsebody
end with
getBoy = BytesToBstr(GetBoy,"GB2312")
Set objXml = nothing
end function

\'处理二进制流代码
Function BytesToBstr(strBody,CodeBase)
dim objStream
set objStream = Server.CreateObject("Adodb.Stream")
objStream.Type = 1
objStream.Mode =3
objStream.Open
objStream.Write strBody
objStream.Position = 0
objStream.Type = 2
objStream.Charset = CodeBase
BytesToBstr = objStream.ReadText
objStream.Close
set objStream = nothing
End Function
%>
未注册的域名如下
<%
If Request.Form("yes") <> "" Then
yes = replace(Request.Form("yes")," ","") \'去除复选框字符串中的空格
yes = split(yes,",") \'实例化一个数组yes，将用逗号隔开的yes数组赋值给yes新数组

For i = 0 to ubound(yes) \'遍历数组循环开始
url = "http://panda.www.net.cn/cgi-bin/Check.cgi?domain="&Request.Form("domain")&"&ext="&yes(i)
wstr = getBoy(url) \'获取查询后的源代码
If instr(wstr,"未被注册的域名") <> 0 Then \'判断是否为已经注册的域名
Response.Write Request.Form("domain")&"."&formaturl(yes(i))&"<br><br><br><br>" \'列出未注册的域名
End If
Next
response.Write "<p><p><p>已注册的域名如下：<br>"
For i = 0 to ubound(yes) \'遍历数组循环开始
url = "http://panda.www.net.cn/cgi-bin/Check.cgi?domain="&Request.Form("domain")&"&ext="&yes(i)
wstr = getBoy(url) \'获取查询后的源代码
If instr(wstr,"已被注册的域名") <> 0 Then \'判断是否为已经注册的域名
Response.Write Request.Form("domain")&"."&formaturl(yes(i))&"<br><br><br><br>" \'列出已注册的域名
End If
Next

Else

%>
<form name="form1" method="post" action="">
<p>
<input name="domain" type="text" id="domain">
<input type="submit" name="Submit" value="查询">
</p>
<p>
<input name="yes" type="checkbox" id="yes" value="com">
.com
<input name="yes" type="checkbox" id="yes" value="net">
.net
<input name="yes" type="checkbox" id="yes" value="org">
.org </p>
<p>
<input name="yes" type="checkbox" id="yes" value="comcn">
.com.cn
<input name="yes" type="checkbox" id="yes" value="netcn">
.net.cn
<input name="yes" type="checkbox" id="yes" value="orgcn">
org.cn
<input name="yes" type="checkbox" id="yes" value="govcn">
gov.cn </p>
<p>
<input name="yes" type="checkbox" id="yes" value="info">
.info
<input name="yes" type="checkbox" id="yes" value="biz">
.biz
<input name="yes" type="checkbox" id="yes" value="tv">
.tv
<input name="yes" type="checkbox" id="yes" value="cc">
.cc</p>
<p>
<input name="yes" type="checkbox" id="yes" value="cn">
.cn
<input name="yes" type="checkbox" id="yes" value="name">
.name </p>
</form>
<%
End If
%>