Search notes:
subnet masks
Also known as:
netmasks
only 7 possible values for the last octet of a subnet mask: 0, 192, 128, 224, 240, 248 and 252.
dotted decimal format
slash format
available addresses
255.255.255.0
/24
256
255.255.255.128
/25
128
255.255.255.192
/26
64
255.255.255.224
/27
32
255.255.255.240
/28
16
255.255.255.248
/29
8
255.255.255.252
/30
4
Index