networks:classes

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Class Start address
A 0.0.0.0 126.255.255.255
B 128.0.0.0 191.255.255.255
C 192.0.0.0 223.255.255.255
D 224.0.0.0 239.255.255.255
E 240.0.0.0 255.255.255.255

Address ranges to be use by private networks are:

Class Start address
A 10.0.0.0 10.255.255.255
B 172.16.0.0 172.31.255.255
C 192.168.0.0 192.168.255.255

Subnets and Masks

Class Address # of Hosts
CIDR /4 240,435,456 240.0.0.0
CIDR /5 134,217,728 248.0.0.0
CIDR /6 67,108,864 252.0.0.0
CIDR /7 33,554,432 254.0.0.0
A /8 16,777,216 255.0.0.0
CIDR /9 8,388,608 255.128.0.0
CIDR /10 4,194,304 255.192.0.0
CIDR /11 2,097,152 255.224.0.0
CIDR /12 1,048,576 255.240.0.0
CIDR /13 524,288 255.248.0.0
CIDR /14 262,144 255.252.0.0
CIDR /15 131,072 255.254.0.0
B /16 65,534 255.255.0.0
CIDR /17 32,768 255.255.128.0
CIDR /18 16,384 255.255.192.0
CIDR /19 8,192 255.255.224.0
CIDR /20 4,096 255.255.240.0
CIDR /21 2,048 255.255.248.0
CIDR /22 1,024 255.255.252.0
CIDR /23 512 255.255.254.0
C /24 256 255.255.255.0
CIDR /25 128 255.255.255.128
CIDR /26 64 255.255.255.192
CIDR /27 32 255.255.255.224
CIDR /28 16 255.255.255.240
CIDR /29 8 255.255.255.248
CIDR /30 4 255.255.255.252
  • networks/classes.txt
  • Last modified: 2018/09/29 16:38
  • by preb