Ipv4

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IPV4 SUBNETTING
Subnets
CIDR Subnet Mask Addresses Wildcard Subnet Mask

packetlife.net
Decimal to Binary
Wildcard

/32 255.255.255.255 /31 255.255.255.254 /30 255.255.255.252 /29255.255.255.248 /28 255.255.255.240 /27 255.255.255.224 /26 255.255.255.192 /25 255.255.255.128 /24 255.255.255.0 /23 255.255.254.0 /22 255.255.252.0 /21 255.255.248.0 /20 255.255.240.0 /19 255.255.224.0 /18255.255.192.0 /17 255.255.128.0 /16 255.255.0.0 /15 255.254.0.0 /14 255.252.0.0 /13 255.248.0.0 /12 255.240.0.0 /11 255.224.0.0 /10 255.192.0.0 /9 255.128.0.0 /8 255.0.0.0 /7 254.0.0.0 /6 252.0.0.0 /5248.0.0.0 /4 240.0.0.0 /3 224.0.0.0 /2 192.0.0.0 /1 128.0.0.0 /0 0.0.0.0

1 2 4 8 16 32 64 128 256 512 1,024 2,048 4,096 8,192 16,384 32,768 65,536 131,072 262,144 524,288 1,048,576 2,097,1524,194,304 8,388,608 16,777,216 33,554,432 67,108,864 134,217,728 268,435,456 536,870,912 1,073,741,824 2,147,483,648 4,294,967,296

0.0.0.0 0.0.0.1 0.0.0.3 0.0.0.7 0.0.0.15 0.0.0.31 0.0.0.63 0.0.0.1270.0.0.255 0.0.1.255 0.0.3.255 0.0.7.255 0.0.15.255 0.0.31.255 0.0.63.255 0.0.127.255 0.0.255.255 0.1.255.255 0.3.255.255 0.7.255.255 0.15.255.255 0.31.255.255 0.63.255.255 0.127.255.255 0.255.255.2551.255.255.255 3.255.255.255 7.255.255.255 15.255.255.255 31.255.255.255 63.255.255.255 127.255.255.255 255.255.255.255 Terminology

255 1111 1111 254 1111 1110 252 1111 1100 248 1111 1000 240 1111 0000224 1110 0000 192 1100 0000 128 1000 0000 0 0000 0000

0 0000 0000 1 0000 0001 3 0000 0011 7 0000 0111 15 0000 1111 31 0001 1111 63 0011 1111 127 0111 1111 255 1111 1111

Subnet Proportion

/27/26 /28 /29 /30 /30

/25

Classful Ranges A 0.0.0.0 – 127.255.255.255 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 - 255.255.255.255Reserved Ranges RFC 1918 10.0.0.0 - 10.255.255.255 Localhost 127.0.0.0 - 127.255.255.255 RFC 1918 172.16.0.0 - 172.31.255.255 RFC 1918 192.168.0.0 - 192.168.255.255

CIDR Classless interdomain routing...
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