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Networking

IP Network masks

In Networking, Uncategorized on 8 March 2011 tagged , ,

Numbers of network addresses available for a given number of network bits… I always forget so… Network bits Mask Number of addresses /20 255.255.240.0 4096 /21 255.255.248.0 2048 /22 255.255.252.0 1024 /23 255.255.254.0 512 /24 255.255.255.0 256 /25 255.255.255.128 128 /26 255.255.255.192 64 /27 255.255.255.224 32 /28 255.255.255.240 16 /29 255.255.255.248 8 /30 255.255.255.252 4


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