Subnetting Calculator.NET

Subnetting Calculator.NET was designed with network administrators in mind. Just enter in the the IP address or Network address and the select the Subnetmask. You will then know what network the address is on, all other networks available.
Ссылка: http://camalotd..pts/download/?id=c1e2c181-08ec-40ef-84ad-8594a9ca90e2