Netmasks / Subnetting

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Network Classes Private Ranges

Class	Short noted	Address Range	Default Subnet Mask	Available Hosts
A	10/8	10.0.0.0 - 10.255.255.255	255.0.0.0 (/8)	16.777.214
B	172.16/12	172.16.0.0 - 172.31.255.255	255.240.0.0 (/12)	1.048.574
C	192.168/16	192.168.0.0 - 192.168.255.255	255.255.0.0 (/16)	65.534
LOCALHOST	-	127.0.0.0 - 127.255.255.255	-	-
CGNAT	-	100.64.0.0 - 100.127.255.255	255.192.0.0 (/10)	4.194.302

Network Classes Public Ranges

Class	Short noted	Address Range	Default Subnet Mask	Networks	Available Hosts Per Network
A	10/8	1.0.0.0 - 9.255.255.255 / 11.0.0.0 - 126.255.255.255	255.0.0.0 (/8)	126	16.777.214
B	128/16	128.0.0.0 - 172.15.255.255 / 172.32.0.0 - 191.255.255.255	255.255.0.0 (/16)	16.384	65.534
C		192.0.0.0 - 192.167.255.255 / 192.169.0.0 - 223.255.255.255	255.255.255.0 (/24)	2.097.152	254

Netmasks / Subnetting

Overview of network CIDR, Addresses, Hosts, Netmask and amount of clients

CIDR	Addresses	Hosts	Netmask	Amount of a Class C
/32	1	1	255.255.255.255	-
/31	2	2	255.255.255.254	-
/30	4	2	255.255.255.252	1/64
/29	8	6	255.255.255.248	1/32
/28	16	14	255.255.255.240	1/16
/27	32	30	255.255.255.224	1/8
/26	64	62	255.255.255.192	1/4
/25	128	126	255.255.255.128	1/2
/24	256	254	255.255.255.0	1
/23	512	510	255.255.254.0	2
/22	1024	1022	255.255.252.0	4
/21	2048	2046	255.255.248.0	8
/20	4096	4094	255.255.240.0	16
/19	8192	8190	255.255.224.0	32
/18	16384	16382	255.255.192.0	64
/17	32768	32766	255.255.128.0	128
/16	65536	65534	255.255.0.0	256
/15	131072	131070	255.254.0.0	512
/14	262144	262142	255.252.0.0	1024
/13	524288	524286	255.248.0.0	2048
/12	1048576	1048574	255.240.0.0	4096
/11	2097152	2097150	255.224.0.0	8192
/10	4194304	4194302	255.192.0.0	16384
/9	8388608	8388606	255.128.0.0	32768
/8	16777216	16777214	255.0.0.0	65536