display network, broadcast, The first and last given network address
in netmask "bit format" also known as CIDR format (CIDR=Classless Inter-Domain Routing).
IP multicast address range
All multicast addresses can be easily identified out because the parity pattern "1110" starts.
224.0.0.0 - 224.0.0.255 Well Known Multicast Address, Control Channel
224.0.1.0 - 238.255.255.255 Worldwide (Internet Wide) Multicast Address
239.0.0.0 - 239.255.255.255 local multicast address
LAN Planning Tool, Subnet calculation and division, each system of subnet mask indicates conversion, and the system of IP address indicates conversion.。