Netmasks / Subnetting

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