www.pcwdld.com
download.cnet.com
advanced-ip-address-calculator.en.softonic.com
www.baixaki.com.br
advanced-ip-address-calculator.en.uptodown.com
ip-calculator.soft112.com
www.calculator.net
www.ilovefreesoftware.com
Free. Windows. Administration of large networks could be a very time-consuming work. So this program should represent a comfortable solution for calculating subnets in IPv4-networks.
sourceforge.net