Difference between revisions of "CIDR Notation"

Latest revision as of 09:05, 12 May 2022

Subnet Mask	CIDR Prefix	Total IP Addresses	Usable IP Addresses	Number of /24 networks
255.255.255.255	32	1	1	1/256th
255.255.255.254	31	2	2*	1/128th
255.255.255.252	30	4	2	1/64th
255.255.255.248	29	8	6	1/32nd
255.255.255.240	28	16	14	1/16th
255.255.255.224	27	32	30	1/8th
255.255.255.192	26	64	62	1/4th
255.255.255.128	25	128	126	1 half
255.255.255.0	24	256	254	1
255.255.254.0	23	512	510	2
255.255.252.0	22	1024	1022	4
255.255.248.0	21	2048	2046	8
255.255.240.0	20	4096	4094	16
255.255.224.0	19	8192	8190	32
255.255.192.0	18	16,384	16,382	64
255.255.128.0	17	32,768	32,766	128
255.255.0.0	16	65,536	65,534	256

@@ Line 14: / Line 14: @@
 |- style="background-color:#FCFCFC;"
 | 255.255.255.254
-| /31
+| 31
 | 2
 | 2*
@@ Line 32: / Line 32: @@
 |-
 | 255.255.255.240
-| /28
+| 28
 | 16
 | 14