Available Hosts per Subnet

This group of pages has my contributions to the Internet community.

For Class B Networks

networknetwork maskhostsnetworkstotal hosts
/count possibleavailable 
16255.255.0.06553665534165534
17255.255.128.03276832766265532
18255.255.192.01638416382465528
19255.255.224.081928190865520
20255.255.240.0409640941665504
21255.255.248.0204820463265472
22255.255.252.0102410226465408
23255.255.254.051251012865280
24255.255.255.025625425665024
25255.255.255.12812812651264512
26255.255.255.1926462102463488
27255.255.255.2243230204861440
28255.255.255.2401614409657344
29255.255.255.24886819248744
30255.255.255.252421638432764

For Class C Networks

networknetwork maskhostsnetworkstotal hosts
/count possibleavailable 
24255.255.255.02562541254
25255.255.255.1281281262252
26255.255.255.19264624248
27255.255.255.22432308240
28255.255.255.240161416224
29255.255.255.2488632192
30255.255.255.2524264128

possible: number of mathematically possible hosts or networks.

available: number of hosts or networks after subtracting all-zeros and all-ones identifiers.

Creative Contributions

Others' Contributions

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Internet FAQs

Code

“How-Tos”

Data

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I am Craig A. Finseth.

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Last modified Tuesday, 2010-03-02T20:27:05-06:00.