Show network, broadcast, first and last given network address
The "bit format" in the network mask is also called the CIDR format (CIDR=Category Inter-Domain Routing Selection).
IP multicast address range
All multicast addresses can be easily recognized because the homologous mode "1110" begins.
224.0.0.0 - 224.0.0.255 well-known multicast address, control channel
224.0.1.0 - 238.255.255.255 Global (Internet wide) multicast address
239.0.0.0 - 239.255.255.255 Local multicast address
Local area network planning tools, subnet calculation division, subnet mask each partial representation conversion, and IP address partial representation conversion. .