Thursday, 29 November 2018

Subnet Mask Cheat Sheet


Addresses
Hosts
Netmask
Amount of a Class C
/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