Buy IPsearch $12.99 (as at Jan 2005)
IPsearch lets you search the Internet's IP address space - give it a starting IP address and it sequentially searches for HTTP ports and reports summary HTML content.
IPsearch can also do a complete Whois function and can convert domain names to IP addresses. Results can be saved and printed.
IPsearch comes with a complete Help file.
IPsearch is for Win95/98 and WinNT/2K.
Download from http://www.winsite.com/bin/Info?1000000034160
