IPv4 Subnet Calculator
Enter an IP with a CIDR prefix or a subnet mask to see its network, broadcast, host range, and host count. You can also split the network into smaller subnets.
private IP (RFC 1918)10.166.121.0/24
network10.166.121.0/24
broadcast10.166.121.255
first host10.166.121.1
last host10.166.121.254
subnet mask255.255.255.0
wildcard0.0.0.255
addresses256
usable hosts254
classA
ipcalc 10.166.121.0/24
address00001010.10100110.01111001.00000000
subnet mask11111111.11111111.11111111.00000000
network00001010.10100110.01111001.00000000
broadcast00001010.10100110.01111001.11111111
green = network part, grey = host part
hex0x0aa67900
decimal178682112
reverse dns0.121.166.10.in-addr.arpa
ipv4-mapped::ffff:aa6:7900
/24 split into /32 · 256 subnets
close ×| # | network | host range | broadcast |
|---|---|---|---|
| 1 | 10.166.121.0/32 | 10.166.121.0 – 10.166.121.0 | 10.166.121.0 |
| 2 | 10.166.121.1/32 | 10.166.121.1 – 10.166.121.1 | 10.166.121.1 |
| 3 | 10.166.121.2/32 | 10.166.121.2 – 10.166.121.2 | 10.166.121.2 |
| 4 | 10.166.121.3/32 | 10.166.121.3 – 10.166.121.3 | 10.166.121.3 |
| 5 | 10.166.121.4/32 | 10.166.121.4 – 10.166.121.4 | 10.166.121.4 |
| 6 | 10.166.121.5/32 | 10.166.121.5 – 10.166.121.5 | 10.166.121.5 |
| 7 | 10.166.121.6/32 | 10.166.121.6 – 10.166.121.6 | 10.166.121.6 |
| 8 | 10.166.121.7/32 | 10.166.121.7 – 10.166.121.7 | 10.166.121.7 |
| 9 | 10.166.121.8/32 | 10.166.121.8 – 10.166.121.8 | 10.166.121.8 |
| 10 | 10.166.121.9/32 | 10.166.121.9 – 10.166.121.9 | 10.166.121.9 |
| 11 | 10.166.121.10/32 | 10.166.121.10 – 10.166.121.10 | 10.166.121.10 |
| 12 | 10.166.121.11/32 | 10.166.121.11 – 10.166.121.11 | 10.166.121.11 |
| 13 | 10.166.121.12/32 | 10.166.121.12 – 10.166.121.12 | 10.166.121.12 |
| 14 | 10.166.121.13/32 | 10.166.121.13 – 10.166.121.13 | 10.166.121.13 |
| 15 | 10.166.121.14/32 | 10.166.121.14 – 10.166.121.14 | 10.166.121.14 |
| 16 | 10.166.121.15/32 | 10.166.121.15 – 10.166.121.15 | 10.166.121.15 |
| 17 | 10.166.121.16/32 | 10.166.121.16 – 10.166.121.16 | 10.166.121.16 |
| 18 | 10.166.121.17/32 | 10.166.121.17 – 10.166.121.17 | 10.166.121.17 |
| 19 | 10.166.121.18/32 | 10.166.121.18 – 10.166.121.18 | 10.166.121.18 |
| 20 | 10.166.121.19/32 | 10.166.121.19 – 10.166.121.19 | 10.166.121.19 |
| 21 | 10.166.121.20/32 | 10.166.121.20 – 10.166.121.20 | 10.166.121.20 |
| 22 | 10.166.121.21/32 | 10.166.121.21 – 10.166.121.21 | 10.166.121.21 |
| 23 | 10.166.121.22/32 | 10.166.121.22 – 10.166.121.22 | 10.166.121.22 |
| 24 | 10.166.121.23/32 | 10.166.121.23 – 10.166.121.23 | 10.166.121.23 |
| 25 | 10.166.121.24/32 | 10.166.121.24 – 10.166.121.24 | 10.166.121.24 |
| 26 | 10.166.121.25/32 | 10.166.121.25 – 10.166.121.25 | 10.166.121.25 |
| 27 | 10.166.121.26/32 | 10.166.121.26 – 10.166.121.26 | 10.166.121.26 |
| 28 | 10.166.121.27/32 | 10.166.121.27 – 10.166.121.27 | 10.166.121.27 |
| 29 | 10.166.121.28/32 | 10.166.121.28 – 10.166.121.28 | 10.166.121.28 |
| 30 | 10.166.121.29/32 | 10.166.121.29 – 10.166.121.29 | 10.166.121.29 |
| 31 | 10.166.121.30/32 | 10.166.121.30 – 10.166.121.30 | 10.166.121.30 |
| 32 | 10.166.121.31/32 | 10.166.121.31 – 10.166.121.31 | 10.166.121.31 |
| 33 | 10.166.121.32/32 | 10.166.121.32 – 10.166.121.32 | 10.166.121.32 |
| 34 | 10.166.121.33/32 | 10.166.121.33 – 10.166.121.33 | 10.166.121.33 |
| 35 | 10.166.121.34/32 | 10.166.121.34 – 10.166.121.34 | 10.166.121.34 |
| 36 | 10.166.121.35/32 | 10.166.121.35 – 10.166.121.35 | 10.166.121.35 |
| 37 | 10.166.121.36/32 | 10.166.121.36 – 10.166.121.36 | 10.166.121.36 |
| 38 | 10.166.121.37/32 | 10.166.121.37 – 10.166.121.37 | 10.166.121.37 |
| 39 | 10.166.121.38/32 | 10.166.121.38 – 10.166.121.38 | 10.166.121.38 |
| 40 | 10.166.121.39/32 | 10.166.121.39 – 10.166.121.39 | 10.166.121.39 |
| 41 | 10.166.121.40/32 | 10.166.121.40 – 10.166.121.40 | 10.166.121.40 |
| 42 | 10.166.121.41/32 | 10.166.121.41 – 10.166.121.41 | 10.166.121.41 |
| 43 | 10.166.121.42/32 | 10.166.121.42 – 10.166.121.42 | 10.166.121.42 |
| 44 | 10.166.121.43/32 | 10.166.121.43 – 10.166.121.43 | 10.166.121.43 |
| 45 | 10.166.121.44/32 | 10.166.121.44 – 10.166.121.44 | 10.166.121.44 |
| 46 | 10.166.121.45/32 | 10.166.121.45 – 10.166.121.45 | 10.166.121.45 |
| 47 | 10.166.121.46/32 | 10.166.121.46 – 10.166.121.46 | 10.166.121.46 |
| 48 | 10.166.121.47/32 | 10.166.121.47 – 10.166.121.47 | 10.166.121.47 |
| 49 | 10.166.121.48/32 | 10.166.121.48 – 10.166.121.48 | 10.166.121.48 |
| 50 | 10.166.121.49/32 | 10.166.121.49 – 10.166.121.49 | 10.166.121.49 |
| 51 | 10.166.121.50/32 | 10.166.121.50 – 10.166.121.50 | 10.166.121.50 |
| 52 | 10.166.121.51/32 | 10.166.121.51 – 10.166.121.51 | 10.166.121.51 |
| 53 | 10.166.121.52/32 | 10.166.121.52 – 10.166.121.52 | 10.166.121.52 |
| 54 | 10.166.121.53/32 | 10.166.121.53 – 10.166.121.53 | 10.166.121.53 |
| 55 | 10.166.121.54/32 | 10.166.121.54 – 10.166.121.54 | 10.166.121.54 |
| 56 | 10.166.121.55/32 | 10.166.121.55 – 10.166.121.55 | 10.166.121.55 |
| 57 | 10.166.121.56/32 | 10.166.121.56 – 10.166.121.56 | 10.166.121.56 |
| 58 | 10.166.121.57/32 | 10.166.121.57 – 10.166.121.57 | 10.166.121.57 |
| 59 | 10.166.121.58/32 | 10.166.121.58 – 10.166.121.58 | 10.166.121.58 |
| 60 | 10.166.121.59/32 | 10.166.121.59 – 10.166.121.59 | 10.166.121.59 |
| 61 | 10.166.121.60/32 | 10.166.121.60 – 10.166.121.60 | 10.166.121.60 |
| 62 | 10.166.121.61/32 | 10.166.121.61 – 10.166.121.61 | 10.166.121.61 |
| 63 | 10.166.121.62/32 | 10.166.121.62 – 10.166.121.62 | 10.166.121.62 |
| 64 | 10.166.121.63/32 | 10.166.121.63 – 10.166.121.63 | 10.166.121.63 |
| 65 | 10.166.121.64/32 | 10.166.121.64 – 10.166.121.64 | 10.166.121.64 |
| 66 | 10.166.121.65/32 | 10.166.121.65 – 10.166.121.65 | 10.166.121.65 |
| 67 | 10.166.121.66/32 | 10.166.121.66 – 10.166.121.66 | 10.166.121.66 |
| 68 | 10.166.121.67/32 | 10.166.121.67 – 10.166.121.67 | 10.166.121.67 |
| 69 | 10.166.121.68/32 | 10.166.121.68 – 10.166.121.68 | 10.166.121.68 |
| 70 | 10.166.121.69/32 | 10.166.121.69 – 10.166.121.69 | 10.166.121.69 |
| 71 | 10.166.121.70/32 | 10.166.121.70 – 10.166.121.70 | 10.166.121.70 |
| 72 | 10.166.121.71/32 | 10.166.121.71 – 10.166.121.71 | 10.166.121.71 |
| 73 | 10.166.121.72/32 | 10.166.121.72 – 10.166.121.72 | 10.166.121.72 |
| 74 | 10.166.121.73/32 | 10.166.121.73 – 10.166.121.73 | 10.166.121.73 |
| 75 | 10.166.121.74/32 | 10.166.121.74 – 10.166.121.74 | 10.166.121.74 |
| 76 | 10.166.121.75/32 | 10.166.121.75 – 10.166.121.75 | 10.166.121.75 |
| 77 | 10.166.121.76/32 | 10.166.121.76 – 10.166.121.76 | 10.166.121.76 |
| 78 | 10.166.121.77/32 | 10.166.121.77 – 10.166.121.77 | 10.166.121.77 |
| 79 | 10.166.121.78/32 | 10.166.121.78 – 10.166.121.78 | 10.166.121.78 |
| 80 | 10.166.121.79/32 | 10.166.121.79 – 10.166.121.79 | 10.166.121.79 |
| 81 | 10.166.121.80/32 | 10.166.121.80 – 10.166.121.80 | 10.166.121.80 |
| 82 | 10.166.121.81/32 | 10.166.121.81 – 10.166.121.81 | 10.166.121.81 |
| 83 | 10.166.121.82/32 | 10.166.121.82 – 10.166.121.82 | 10.166.121.82 |
| 84 | 10.166.121.83/32 | 10.166.121.83 – 10.166.121.83 | 10.166.121.83 |
| 85 | 10.166.121.84/32 | 10.166.121.84 – 10.166.121.84 | 10.166.121.84 |
| 86 | 10.166.121.85/32 | 10.166.121.85 – 10.166.121.85 | 10.166.121.85 |
| 87 | 10.166.121.86/32 | 10.166.121.86 – 10.166.121.86 | 10.166.121.86 |
| 88 | 10.166.121.87/32 | 10.166.121.87 – 10.166.121.87 | 10.166.121.87 |
| 89 | 10.166.121.88/32 | 10.166.121.88 – 10.166.121.88 | 10.166.121.88 |
| 90 | 10.166.121.89/32 | 10.166.121.89 – 10.166.121.89 | 10.166.121.89 |
| 91 | 10.166.121.90/32 | 10.166.121.90 – 10.166.121.90 | 10.166.121.90 |
| 92 | 10.166.121.91/32 | 10.166.121.91 – 10.166.121.91 | 10.166.121.91 |
| 93 | 10.166.121.92/32 | 10.166.121.92 – 10.166.121.92 | 10.166.121.92 |
| 94 | 10.166.121.93/32 | 10.166.121.93 – 10.166.121.93 | 10.166.121.93 |
| 95 | 10.166.121.94/32 | 10.166.121.94 – 10.166.121.94 | 10.166.121.94 |
| 96 | 10.166.121.95/32 | 10.166.121.95 – 10.166.121.95 | 10.166.121.95 |
| 97 | 10.166.121.96/32 | 10.166.121.96 – 10.166.121.96 | 10.166.121.96 |
| 98 | 10.166.121.97/32 | 10.166.121.97 – 10.166.121.97 | 10.166.121.97 |
| 99 | 10.166.121.98/32 | 10.166.121.98 – 10.166.121.98 | 10.166.121.98 |
| 100 | 10.166.121.99/32 | 10.166.121.99 – 10.166.121.99 | 10.166.121.99 |
| 101 | 10.166.121.100/32 | 10.166.121.100 – 10.166.121.100 | 10.166.121.100 |
| 102 | 10.166.121.101/32 | 10.166.121.101 – 10.166.121.101 | 10.166.121.101 |
| 103 | 10.166.121.102/32 | 10.166.121.102 – 10.166.121.102 | 10.166.121.102 |
| 104 | 10.166.121.103/32 | 10.166.121.103 – 10.166.121.103 | 10.166.121.103 |
| 105 | 10.166.121.104/32 | 10.166.121.104 – 10.166.121.104 | 10.166.121.104 |
| 106 | 10.166.121.105/32 | 10.166.121.105 – 10.166.121.105 | 10.166.121.105 |
| 107 | 10.166.121.106/32 | 10.166.121.106 – 10.166.121.106 | 10.166.121.106 |
| 108 | 10.166.121.107/32 | 10.166.121.107 – 10.166.121.107 | 10.166.121.107 |
| 109 | 10.166.121.108/32 | 10.166.121.108 – 10.166.121.108 | 10.166.121.108 |
| 110 | 10.166.121.109/32 | 10.166.121.109 – 10.166.121.109 | 10.166.121.109 |
| 111 | 10.166.121.110/32 | 10.166.121.110 – 10.166.121.110 | 10.166.121.110 |
| 112 | 10.166.121.111/32 | 10.166.121.111 – 10.166.121.111 | 10.166.121.111 |
| 113 | 10.166.121.112/32 | 10.166.121.112 – 10.166.121.112 | 10.166.121.112 |
| 114 | 10.166.121.113/32 | 10.166.121.113 – 10.166.121.113 | 10.166.121.113 |
| 115 | 10.166.121.114/32 | 10.166.121.114 – 10.166.121.114 | 10.166.121.114 |
| 116 | 10.166.121.115/32 | 10.166.121.115 – 10.166.121.115 | 10.166.121.115 |
| 117 | 10.166.121.116/32 | 10.166.121.116 – 10.166.121.116 | 10.166.121.116 |
| 118 | 10.166.121.117/32 | 10.166.121.117 – 10.166.121.117 | 10.166.121.117 |
| 119 | 10.166.121.118/32 | 10.166.121.118 – 10.166.121.118 | 10.166.121.118 |
| 120 | 10.166.121.119/32 | 10.166.121.119 – 10.166.121.119 | 10.166.121.119 |
| 121 | 10.166.121.120/32 | 10.166.121.120 – 10.166.121.120 | 10.166.121.120 |
| 122 | 10.166.121.121/32 | 10.166.121.121 – 10.166.121.121 | 10.166.121.121 |
| 123 | 10.166.121.122/32 | 10.166.121.122 – 10.166.121.122 | 10.166.121.122 |
| 124 | 10.166.121.123/32 | 10.166.121.123 – 10.166.121.123 | 10.166.121.123 |
| 125 | 10.166.121.124/32 | 10.166.121.124 – 10.166.121.124 | 10.166.121.124 |
| 126 | 10.166.121.125/32 | 10.166.121.125 – 10.166.121.125 | 10.166.121.125 |
| 127 | 10.166.121.126/32 | 10.166.121.126 – 10.166.121.126 | 10.166.121.126 |
| 128 | 10.166.121.127/32 | 10.166.121.127 – 10.166.121.127 | 10.166.121.127 |
| 129 | 10.166.121.128/32 | 10.166.121.128 – 10.166.121.128 | 10.166.121.128 |
| 130 | 10.166.121.129/32 | 10.166.121.129 – 10.166.121.129 | 10.166.121.129 |
| 131 | 10.166.121.130/32 | 10.166.121.130 – 10.166.121.130 | 10.166.121.130 |
| 132 | 10.166.121.131/32 | 10.166.121.131 – 10.166.121.131 | 10.166.121.131 |
| 133 | 10.166.121.132/32 | 10.166.121.132 – 10.166.121.132 | 10.166.121.132 |
| 134 | 10.166.121.133/32 | 10.166.121.133 – 10.166.121.133 | 10.166.121.133 |
| 135 | 10.166.121.134/32 | 10.166.121.134 – 10.166.121.134 | 10.166.121.134 |
| 136 | 10.166.121.135/32 | 10.166.121.135 – 10.166.121.135 | 10.166.121.135 |
| 137 | 10.166.121.136/32 | 10.166.121.136 – 10.166.121.136 | 10.166.121.136 |
| 138 | 10.166.121.137/32 | 10.166.121.137 – 10.166.121.137 | 10.166.121.137 |
| 139 | 10.166.121.138/32 | 10.166.121.138 – 10.166.121.138 | 10.166.121.138 |
| 140 | 10.166.121.139/32 | 10.166.121.139 – 10.166.121.139 | 10.166.121.139 |
| 141 | 10.166.121.140/32 | 10.166.121.140 – 10.166.121.140 | 10.166.121.140 |
| 142 | 10.166.121.141/32 | 10.166.121.141 – 10.166.121.141 | 10.166.121.141 |
| 143 | 10.166.121.142/32 | 10.166.121.142 – 10.166.121.142 | 10.166.121.142 |
| 144 | 10.166.121.143/32 | 10.166.121.143 – 10.166.121.143 | 10.166.121.143 |
| 145 | 10.166.121.144/32 | 10.166.121.144 – 10.166.121.144 | 10.166.121.144 |
| 146 | 10.166.121.145/32 | 10.166.121.145 – 10.166.121.145 | 10.166.121.145 |
| 147 | 10.166.121.146/32 | 10.166.121.146 – 10.166.121.146 | 10.166.121.146 |
| 148 | 10.166.121.147/32 | 10.166.121.147 – 10.166.121.147 | 10.166.121.147 |
| 149 | 10.166.121.148/32 | 10.166.121.148 – 10.166.121.148 | 10.166.121.148 |
| 150 | 10.166.121.149/32 | 10.166.121.149 – 10.166.121.149 | 10.166.121.149 |
| 151 | 10.166.121.150/32 | 10.166.121.150 – 10.166.121.150 | 10.166.121.150 |
| 152 | 10.166.121.151/32 | 10.166.121.151 – 10.166.121.151 | 10.166.121.151 |
| 153 | 10.166.121.152/32 | 10.166.121.152 – 10.166.121.152 | 10.166.121.152 |
| 154 | 10.166.121.153/32 | 10.166.121.153 – 10.166.121.153 | 10.166.121.153 |
| 155 | 10.166.121.154/32 | 10.166.121.154 – 10.166.121.154 | 10.166.121.154 |
| 156 | 10.166.121.155/32 | 10.166.121.155 – 10.166.121.155 | 10.166.121.155 |
| 157 | 10.166.121.156/32 | 10.166.121.156 – 10.166.121.156 | 10.166.121.156 |
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| 159 | 10.166.121.158/32 | 10.166.121.158 – 10.166.121.158 | 10.166.121.158 |
| 160 | 10.166.121.159/32 | 10.166.121.159 – 10.166.121.159 | 10.166.121.159 |
| 161 | 10.166.121.160/32 | 10.166.121.160 – 10.166.121.160 | 10.166.121.160 |
| 162 | 10.166.121.161/32 | 10.166.121.161 – 10.166.121.161 | 10.166.121.161 |
| 163 | 10.166.121.162/32 | 10.166.121.162 – 10.166.121.162 | 10.166.121.162 |
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| 165 | 10.166.121.164/32 | 10.166.121.164 – 10.166.121.164 | 10.166.121.164 |
| 166 | 10.166.121.165/32 | 10.166.121.165 – 10.166.121.165 | 10.166.121.165 |
| 167 | 10.166.121.166/32 | 10.166.121.166 – 10.166.121.166 | 10.166.121.166 |
| 168 | 10.166.121.167/32 | 10.166.121.167 – 10.166.121.167 | 10.166.121.167 |
| 169 | 10.166.121.168/32 | 10.166.121.168 – 10.166.121.168 | 10.166.121.168 |
| 170 | 10.166.121.169/32 | 10.166.121.169 – 10.166.121.169 | 10.166.121.169 |
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| 200 | 10.166.121.199/32 | 10.166.121.199 – 10.166.121.199 | 10.166.121.199 |
| 201 | 10.166.121.200/32 | 10.166.121.200 – 10.166.121.200 | 10.166.121.200 |
| 202 | 10.166.121.201/32 | 10.166.121.201 – 10.166.121.201 | 10.166.121.201 |
| 203 | 10.166.121.202/32 | 10.166.121.202 – 10.166.121.202 | 10.166.121.202 |
| 204 | 10.166.121.203/32 | 10.166.121.203 – 10.166.121.203 | 10.166.121.203 |
| 205 | 10.166.121.204/32 | 10.166.121.204 – 10.166.121.204 | 10.166.121.204 |
| 206 | 10.166.121.205/32 | 10.166.121.205 – 10.166.121.205 | 10.166.121.205 |
| 207 | 10.166.121.206/32 | 10.166.121.206 – 10.166.121.206 | 10.166.121.206 |
| 208 | 10.166.121.207/32 | 10.166.121.207 – 10.166.121.207 | 10.166.121.207 |
| 209 | 10.166.121.208/32 | 10.166.121.208 – 10.166.121.208 | 10.166.121.208 |
| 210 | 10.166.121.209/32 | 10.166.121.209 – 10.166.121.209 | 10.166.121.209 |
| 211 | 10.166.121.210/32 | 10.166.121.210 – 10.166.121.210 | 10.166.121.210 |
| 212 | 10.166.121.211/32 | 10.166.121.211 – 10.166.121.211 | 10.166.121.211 |
| 213 | 10.166.121.212/32 | 10.166.121.212 – 10.166.121.212 | 10.166.121.212 |
| 214 | 10.166.121.213/32 | 10.166.121.213 – 10.166.121.213 | 10.166.121.213 |
| 215 | 10.166.121.214/32 | 10.166.121.214 – 10.166.121.214 | 10.166.121.214 |
| 216 | 10.166.121.215/32 | 10.166.121.215 – 10.166.121.215 | 10.166.121.215 |
| 217 | 10.166.121.216/32 | 10.166.121.216 – 10.166.121.216 | 10.166.121.216 |
| 218 | 10.166.121.217/32 | 10.166.121.217 – 10.166.121.217 | 10.166.121.217 |
| 219 | 10.166.121.218/32 | 10.166.121.218 – 10.166.121.218 | 10.166.121.218 |
| 220 | 10.166.121.219/32 | 10.166.121.219 – 10.166.121.219 | 10.166.121.219 |
| 221 | 10.166.121.220/32 | 10.166.121.220 – 10.166.121.220 | 10.166.121.220 |
| 222 | 10.166.121.221/32 | 10.166.121.221 – 10.166.121.221 | 10.166.121.221 |
| 223 | 10.166.121.222/32 | 10.166.121.222 – 10.166.121.222 | 10.166.121.222 |
| 224 | 10.166.121.223/32 | 10.166.121.223 – 10.166.121.223 | 10.166.121.223 |
| 225 | 10.166.121.224/32 | 10.166.121.224 – 10.166.121.224 | 10.166.121.224 |
| 226 | 10.166.121.225/32 | 10.166.121.225 – 10.166.121.225 | 10.166.121.225 |
| 227 | 10.166.121.226/32 | 10.166.121.226 – 10.166.121.226 | 10.166.121.226 |
| 228 | 10.166.121.227/32 | 10.166.121.227 – 10.166.121.227 | 10.166.121.227 |
| 229 | 10.166.121.228/32 | 10.166.121.228 – 10.166.121.228 | 10.166.121.228 |
| 230 | 10.166.121.229/32 | 10.166.121.229 – 10.166.121.229 | 10.166.121.229 |
| 231 | 10.166.121.230/32 | 10.166.121.230 – 10.166.121.230 | 10.166.121.230 |
| 232 | 10.166.121.231/32 | 10.166.121.231 – 10.166.121.231 | 10.166.121.231 |
| 233 | 10.166.121.232/32 | 10.166.121.232 – 10.166.121.232 | 10.166.121.232 |
| 234 | 10.166.121.233/32 | 10.166.121.233 – 10.166.121.233 | 10.166.121.233 |
| 235 | 10.166.121.234/32 | 10.166.121.234 – 10.166.121.234 | 10.166.121.234 |
| 236 | 10.166.121.235/32 | 10.166.121.235 – 10.166.121.235 | 10.166.121.235 |
| 237 | 10.166.121.236/32 | 10.166.121.236 – 10.166.121.236 | 10.166.121.236 |
| 238 | 10.166.121.237/32 | 10.166.121.237 – 10.166.121.237 | 10.166.121.237 |
| 239 | 10.166.121.238/32 | 10.166.121.238 – 10.166.121.238 | 10.166.121.238 |
| 240 | 10.166.121.239/32 | 10.166.121.239 – 10.166.121.239 | 10.166.121.239 |
| 241 | 10.166.121.240/32 | 10.166.121.240 – 10.166.121.240 | 10.166.121.240 |
| 242 | 10.166.121.241/32 | 10.166.121.241 – 10.166.121.241 | 10.166.121.241 |
| 243 | 10.166.121.242/32 | 10.166.121.242 – 10.166.121.242 | 10.166.121.242 |
| 244 | 10.166.121.243/32 | 10.166.121.243 – 10.166.121.243 | 10.166.121.243 |
| 245 | 10.166.121.244/32 | 10.166.121.244 – 10.166.121.244 | 10.166.121.244 |
| 246 | 10.166.121.245/32 | 10.166.121.245 – 10.166.121.245 | 10.166.121.245 |
| 247 | 10.166.121.246/32 | 10.166.121.246 – 10.166.121.246 | 10.166.121.246 |
| 248 | 10.166.121.247/32 | 10.166.121.247 – 10.166.121.247 | 10.166.121.247 |
| 249 | 10.166.121.248/32 | 10.166.121.248 – 10.166.121.248 | 10.166.121.248 |
| 250 | 10.166.121.249/32 | 10.166.121.249 – 10.166.121.249 | 10.166.121.249 |
| 251 | 10.166.121.250/32 | 10.166.121.250 – 10.166.121.250 | 10.166.121.250 |
| 252 | 10.166.121.251/32 | 10.166.121.251 – 10.166.121.251 | 10.166.121.251 |
| 253 | 10.166.121.252/32 | 10.166.121.252 – 10.166.121.252 | 10.166.121.252 |
| 254 | 10.166.121.253/32 | 10.166.121.253 – 10.166.121.253 | 10.166.121.253 |
| 255 | 10.166.121.254/32 | 10.166.121.254 – 10.166.121.254 | 10.166.121.254 |
| 256 | 10.166.121.255/32 | 10.166.121.255 – 10.166.121.255 | 10.166.121.255 |
01 / table
IPv4 CIDR prefix table.
Click a prefix longer than your network to split it into subnets.
| prefix | subnet mask | addresses | hosts | in your /24 |
|---|---|---|---|---|
| /0 | 0.0.0.0 | 4,294,967,296 | 4,294,967,294 | - |
| /1 | 128.0.0.0 | 2,147,483,648 | 2,147,483,646 | - |
| /2 | 192.0.0.0 | 1,073,741,824 | 1,073,741,822 | - |
| /3 | 224.0.0.0 | 536,870,912 | 536,870,910 | - |
| /4 | 240.0.0.0 | 268,435,456 | 268,435,454 | - |
| /5 | 248.0.0.0 | 134,217,728 | 134,217,726 | - |
| /6 | 252.0.0.0 | 67,108,864 | 67,108,862 | - |
| /7 | 254.0.0.0 | 33,554,432 | 33,554,430 | - |
| /8 | 255.0.0.0 | 16,777,216 | 16,777,214 | - |
| /9 | 255.128.0.0 | 8,388,608 | 8,388,606 | - |
| /10 | 255.192.0.0 | 4,194,304 | 4,194,302 | - |
| /11 | 255.224.0.0 | 2,097,152 | 2,097,150 | - |
| /12 | 255.240.0.0 | 1,048,576 | 1,048,574 | - |
| /13 | 255.248.0.0 | 524,288 | 524,286 | - |
| /14 | 255.252.0.0 | 262,144 | 262,142 | - |
| /15 | 255.254.0.0 | 131,072 | 131,070 | - |
| /16 | 255.255.0.0 | 65,536 | 65,534 | - |
| /17 | 255.255.128.0 | 32,768 | 32,766 | - |
| /18 | 255.255.192.0 | 16,384 | 16,382 | - |
| /19 | 255.255.224.0 | 8,192 | 8,190 | - |
| /20 | 255.255.240.0 | 4,096 | 4,094 | - |
| /21 | 255.255.248.0 | 2,048 | 2,046 | - |
| /22 | 255.255.252.0 | 1,024 | 1,022 | - |
| /23 | 255.255.254.0 | 512 | 510 | - |
| /24 | 255.255.255.0 | 256 | 254 | 1 |
| /25 | 255.255.255.128 | 128 | 126 | 2 split → |
| /26 | 255.255.255.192 | 64 | 62 | 4 split → |
| /27 | 255.255.255.224 | 32 | 30 | 8 split → |
| /28 | 255.255.255.240 | 16 | 14 | 16 split → |
| /29 | 255.255.255.248 | 8 | 6 | 32 split → |
| /30 | 255.255.255.252 | 4 | 2 | 64 split → |
| /31 | 255.255.255.254 | 2 | 2 | 128 split → |
| /32 | 255.255.255.255 | 1 | 1 | 256 split → |
02 / faq
About this calculator.
How do I use this subnet calculator?
▼
Type an IP address followed by a prefix, like 192.168.1.10/24, or by a subnet mask, like 192.168.1.10 255.255.255.0. Without a prefix it uses /24. Click a row in the table to split the network into smaller subnets.
Why are usable hosts always 2 fewer?
▼
The first address in a subnet is the network address and the last is the broadcast address, so neither can go to a device. The exceptions are /31 (point-to-point links, RFC 3021) and /32 (a single address), which use every address.
Can I use it from a terminal?
▼
Yes. curl 'ipku.in/en/tools/ipv4-subnet-calculator?q=192.168.1.10/24' returns the result as plain text.