VLSM Table

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Variable Length Subnet Mask Table

Prefix Add-on Octet Hosts Subnet
/30 +4 4th byte 2 255.255.255.252
/29 +8 4th byte 6 255.255.255.248
/28 +16 4th byte 14 255.255.255.240
/27 +32 4th byte 30 255.255.255.224
/26 +64 4th byte 62 255.255.255.192
/25 +128 4th byte 126 255.255.255.128
/24 +1 3rd byte 254 255.255.255.0
/23 +2 3rd byte 510 255.255.254.0
/22 +4 3rd byte 1022 255.255.252.0
/21 +8 3rd byte 2046 255.255.248.0
/20 +16 3rd byte 4094 255.255.240.0
/19 +32 3rd byte 8190 255.255.224.0
/18 +64 3rd byte 16382 255.255.192.0
/17 +128 3rd byte 32766 255.255.128.0
/16 +1 2nd byte 65534 255.255.0.0

Download PDF file: Variable Length Subnet Mask Table (895)




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