Masques de sous-réseau

Ceci est un pense bête pour les masques sous réseau en IPV4. Le masque permet de restreindre ou d’étendre le pool d’IP disponible d’un réseau informatique.

CIDRNetmaskMasque wildcardBinaireSous-réseauxHôtes
30255.255.255.2520.0.0.311111111.11111111.11111111.111111004.194.3042
29255.255.255.2480.0.0.711111111.11111111.11111111.111110002.097.1526
28255.255.255.2400.0.0.1511111111.11111111.11111111.111100001.048.57614
27255.255.255.2240.0.0.3111111111.11111111.11111111.11100000524.28830
26255.255.255.1920.0.0.6311111111.11111111.11111111.11000000262.14462
25255.255.255.1280.0.0.12711111111.11111111.11111111.10000000131.072126
24255.255.255.00.0.0.25511111111.11111111.11111111.0000000065.536254
23255.255.254.00.0.1.25511111111.11111111.11111110.0000000032.768510
22255.255.252.00.0.3.25511111111.11111111.11111100.0000000016.3841.022
21255.255.248.00.0.7.25511111111.11111111.11111000.000000008.1922.046
20255.255.240.00.0.15.25511111111.11111111.11110000.000000004.0964.094
19255.255.224.00.0.31.25511111111.11111111.11100000.000000002.0488.190
18255.255.192.00.0.63.25511111111.11111111.11000000.000000001.02416.382
17255.255.128.00.0.127.25511111111.11111111.10000000.0000000051232.766
16255.255.0.00.0.255.25511111111.11111111.00000000.0000000025665.534
15255.254.0.00.1.255.25511111111.11111110.00000000.00000000128131.070
14255.252.0.00.3.255.25511111111.11111100.00000000.0000000064262.142
13255.248.0.00.7.255.25511111111.11111000.00000000.0000000032524.286
12255.240.0.00.15.255.25511111111.11110000.00000000.00000000161.048.574
11255.224.0.00.31.255.25511111111.11100000.00000000.0000000082.097.150
10255.192.0.00.63.255.25511111111.11000000.00000000.0000000044.194.302
9255.128.0.00.127.255.25511111111.10000000.00000000.0000000028.388.606
8255.0.0.00.255.255.25511111111.00000000.00000000.00000000116.777.214