TCP/IP - Supernetting Chart

Supernetting (CIDR) Chart

CIDR - Classless Inter-Domain Routing.
Note: The Number of Class C networks must be contiguous.
Example. 192.168.0.0/22 represents the following block of addresses;
192.168.0.0, 192.168.1.0, 192.168.2.0 and 192.168.3.0.

Class C
CIDR Block	Supernet Mask	Number of Class Cs	Number of Hosts
/14	255.252.0.0	1024	262144
/15	255.254.0.0	512	131072
/16	255.255.0.0	256	65536
/17	255.255.128.0	128	32768
/18	255.255.192.0	64	16384
/19	255.255.224.0	32	8192
/20	255.255.240.0	16	4096
/21	255.255.248.0	8	2048
/22	255.255.252.0	4	1024
/23	255.255.254.0	2	512
/24	255.255.255.0	1	254
/25	255.255.255.128	1/2	126
/26	255.255.255.192	1/4	62