IPsearch is a Servers & Network software developed by Paul Gerhart. After our trial and test, the software is proved to be official, secure and free. Here is the official description for IPsearch:

Edit by Marydown: 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.