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)10.166.166.0/23
network10.166.166.0/23
broadcast10.166.167.255
first host10.166.166.1
last host10.166.167.254
subnet mask255.255.254.0
wildcard0.0.1.255
addresses512
usable hosts510
classA
ipcalc 10.166.166.0/23
address00001010.10100110.10100110.00000000
subnet mask11111111.11111111.11111110.00000000
network00001010.10100110.10100110.00000000
broadcast00001010.10100110.10100111.11111111
green = network part, grey = host part
hex0x0aa6a600
decimal178693632
reverse dns0.166.166.10.in-addr.arpa
ipv4-mapped::ffff:aa6:a600
/23 split into /31 · 256 subnets
close ×| # | network | host range | broadcast |
|---|---|---|---|
| 1 | 10.166.166.0/31 | 10.166.166.0 – 10.166.166.1 | 10.166.166.1 |
| 2 | 10.166.166.2/31 | 10.166.166.2 – 10.166.166.3 | 10.166.166.3 |
| 3 | 10.166.166.4/31 | 10.166.166.4 – 10.166.166.5 | 10.166.166.5 |
| 4 | 10.166.166.6/31 | 10.166.166.6 – 10.166.166.7 | 10.166.166.7 |
| 5 | 10.166.166.8/31 | 10.166.166.8 – 10.166.166.9 | 10.166.166.9 |
| 6 | 10.166.166.10/31 | 10.166.166.10 – 10.166.166.11 | 10.166.166.11 |
| 7 | 10.166.166.12/31 | 10.166.166.12 – 10.166.166.13 | 10.166.166.13 |
| 8 | 10.166.166.14/31 | 10.166.166.14 – 10.166.166.15 | 10.166.166.15 |
| 9 | 10.166.166.16/31 | 10.166.166.16 – 10.166.166.17 | 10.166.166.17 |
| 10 | 10.166.166.18/31 | 10.166.166.18 – 10.166.166.19 | 10.166.166.19 |
| 11 | 10.166.166.20/31 | 10.166.166.20 – 10.166.166.21 | 10.166.166.21 |
| 12 | 10.166.166.22/31 | 10.166.166.22 – 10.166.166.23 | 10.166.166.23 |
| 13 | 10.166.166.24/31 | 10.166.166.24 – 10.166.166.25 | 10.166.166.25 |
| 14 | 10.166.166.26/31 | 10.166.166.26 – 10.166.166.27 | 10.166.166.27 |
| 15 | 10.166.166.28/31 | 10.166.166.28 – 10.166.166.29 | 10.166.166.29 |
| 16 | 10.166.166.30/31 | 10.166.166.30 – 10.166.166.31 | 10.166.166.31 |
| 17 | 10.166.166.32/31 | 10.166.166.32 – 10.166.166.33 | 10.166.166.33 |
| 18 | 10.166.166.34/31 | 10.166.166.34 – 10.166.166.35 | 10.166.166.35 |
| 19 | 10.166.166.36/31 | 10.166.166.36 – 10.166.166.37 | 10.166.166.37 |
| 20 | 10.166.166.38/31 | 10.166.166.38 – 10.166.166.39 | 10.166.166.39 |
| 21 | 10.166.166.40/31 | 10.166.166.40 – 10.166.166.41 | 10.166.166.41 |
| 22 | 10.166.166.42/31 | 10.166.166.42 – 10.166.166.43 | 10.166.166.43 |
| 23 | 10.166.166.44/31 | 10.166.166.44 – 10.166.166.45 | 10.166.166.45 |
| 24 | 10.166.166.46/31 | 10.166.166.46 – 10.166.166.47 | 10.166.166.47 |
| 25 | 10.166.166.48/31 | 10.166.166.48 – 10.166.166.49 | 10.166.166.49 |
| 26 | 10.166.166.50/31 | 10.166.166.50 – 10.166.166.51 | 10.166.166.51 |
| 27 | 10.166.166.52/31 | 10.166.166.52 – 10.166.166.53 | 10.166.166.53 |
| 28 | 10.166.166.54/31 | 10.166.166.54 – 10.166.166.55 | 10.166.166.55 |
| 29 | 10.166.166.56/31 | 10.166.166.56 – 10.166.166.57 | 10.166.166.57 |
| 30 | 10.166.166.58/31 | 10.166.166.58 – 10.166.166.59 | 10.166.166.59 |
| 31 | 10.166.166.60/31 | 10.166.166.60 – 10.166.166.61 | 10.166.166.61 |
| 32 | 10.166.166.62/31 | 10.166.166.62 – 10.166.166.63 | 10.166.166.63 |
| 33 | 10.166.166.64/31 | 10.166.166.64 – 10.166.166.65 | 10.166.166.65 |
| 34 | 10.166.166.66/31 | 10.166.166.66 – 10.166.166.67 | 10.166.166.67 |
| 35 | 10.166.166.68/31 | 10.166.166.68 – 10.166.166.69 | 10.166.166.69 |
| 36 | 10.166.166.70/31 | 10.166.166.70 – 10.166.166.71 | 10.166.166.71 |
| 37 | 10.166.166.72/31 | 10.166.166.72 – 10.166.166.73 | 10.166.166.73 |
| 38 | 10.166.166.74/31 | 10.166.166.74 – 10.166.166.75 | 10.166.166.75 |
| 39 | 10.166.166.76/31 | 10.166.166.76 – 10.166.166.77 | 10.166.166.77 |
| 40 | 10.166.166.78/31 | 10.166.166.78 – 10.166.166.79 | 10.166.166.79 |
| 41 | 10.166.166.80/31 | 10.166.166.80 – 10.166.166.81 | 10.166.166.81 |
| 42 | 10.166.166.82/31 | 10.166.166.82 – 10.166.166.83 | 10.166.166.83 |
| 43 | 10.166.166.84/31 | 10.166.166.84 – 10.166.166.85 | 10.166.166.85 |
| 44 | 10.166.166.86/31 | 10.166.166.86 – 10.166.166.87 | 10.166.166.87 |
| 45 | 10.166.166.88/31 | 10.166.166.88 – 10.166.166.89 | 10.166.166.89 |
| 46 | 10.166.166.90/31 | 10.166.166.90 – 10.166.166.91 | 10.166.166.91 |
| 47 | 10.166.166.92/31 | 10.166.166.92 – 10.166.166.93 | 10.166.166.93 |
| 48 | 10.166.166.94/31 | 10.166.166.94 – 10.166.166.95 | 10.166.166.95 |
| 49 | 10.166.166.96/31 | 10.166.166.96 – 10.166.166.97 | 10.166.166.97 |
| 50 | 10.166.166.98/31 | 10.166.166.98 – 10.166.166.99 | 10.166.166.99 |
| 51 | 10.166.166.100/31 | 10.166.166.100 – 10.166.166.101 | 10.166.166.101 |
| 52 | 10.166.166.102/31 | 10.166.166.102 – 10.166.166.103 | 10.166.166.103 |
| 53 | 10.166.166.104/31 | 10.166.166.104 – 10.166.166.105 | 10.166.166.105 |
| 54 | 10.166.166.106/31 | 10.166.166.106 – 10.166.166.107 | 10.166.166.107 |
| 55 | 10.166.166.108/31 | 10.166.166.108 – 10.166.166.109 | 10.166.166.109 |
| 56 | 10.166.166.110/31 | 10.166.166.110 – 10.166.166.111 | 10.166.166.111 |
| 57 | 10.166.166.112/31 | 10.166.166.112 – 10.166.166.113 | 10.166.166.113 |
| 58 | 10.166.166.114/31 | 10.166.166.114 – 10.166.166.115 | 10.166.166.115 |
| 59 | 10.166.166.116/31 | 10.166.166.116 – 10.166.166.117 | 10.166.166.117 |
| 60 | 10.166.166.118/31 | 10.166.166.118 – 10.166.166.119 | 10.166.166.119 |
| 61 | 10.166.166.120/31 | 10.166.166.120 – 10.166.166.121 | 10.166.166.121 |
| 62 | 10.166.166.122/31 | 10.166.166.122 – 10.166.166.123 | 10.166.166.123 |
| 63 | 10.166.166.124/31 | 10.166.166.124 – 10.166.166.125 | 10.166.166.125 |
| 64 | 10.166.166.126/31 | 10.166.166.126 – 10.166.166.127 | 10.166.166.127 |
| 65 | 10.166.166.128/31 | 10.166.166.128 – 10.166.166.129 | 10.166.166.129 |
| 66 | 10.166.166.130/31 | 10.166.166.130 – 10.166.166.131 | 10.166.166.131 |
| 67 | 10.166.166.132/31 | 10.166.166.132 – 10.166.166.133 | 10.166.166.133 |
| 68 | 10.166.166.134/31 | 10.166.166.134 – 10.166.166.135 | 10.166.166.135 |
| 69 | 10.166.166.136/31 | 10.166.166.136 – 10.166.166.137 | 10.166.166.137 |
| 70 | 10.166.166.138/31 | 10.166.166.138 – 10.166.166.139 | 10.166.166.139 |
| 71 | 10.166.166.140/31 | 10.166.166.140 – 10.166.166.141 | 10.166.166.141 |
| 72 | 10.166.166.142/31 | 10.166.166.142 – 10.166.166.143 | 10.166.166.143 |
| 73 | 10.166.166.144/31 | 10.166.166.144 – 10.166.166.145 | 10.166.166.145 |
| 74 | 10.166.166.146/31 | 10.166.166.146 – 10.166.166.147 | 10.166.166.147 |
| 75 | 10.166.166.148/31 | 10.166.166.148 – 10.166.166.149 | 10.166.166.149 |
| 76 | 10.166.166.150/31 | 10.166.166.150 – 10.166.166.151 | 10.166.166.151 |
| 77 | 10.166.166.152/31 | 10.166.166.152 – 10.166.166.153 | 10.166.166.153 |
| 78 | 10.166.166.154/31 | 10.166.166.154 – 10.166.166.155 | 10.166.166.155 |
| 79 | 10.166.166.156/31 | 10.166.166.156 – 10.166.166.157 | 10.166.166.157 |
| 80 | 10.166.166.158/31 | 10.166.166.158 – 10.166.166.159 | 10.166.166.159 |
| 81 | 10.166.166.160/31 | 10.166.166.160 – 10.166.166.161 | 10.166.166.161 |
| 82 | 10.166.166.162/31 | 10.166.166.162 – 10.166.166.163 | 10.166.166.163 |
| 83 | 10.166.166.164/31 | 10.166.166.164 – 10.166.166.165 | 10.166.166.165 |
| 84 | 10.166.166.166/31 | 10.166.166.166 – 10.166.166.167 | 10.166.166.167 |
| 85 | 10.166.166.168/31 | 10.166.166.168 – 10.166.166.169 | 10.166.166.169 |
| 86 | 10.166.166.170/31 | 10.166.166.170 – 10.166.166.171 | 10.166.166.171 |
| 87 | 10.166.166.172/31 | 10.166.166.172 – 10.166.166.173 | 10.166.166.173 |
| 88 | 10.166.166.174/31 | 10.166.166.174 – 10.166.166.175 | 10.166.166.175 |
| 89 | 10.166.166.176/31 | 10.166.166.176 – 10.166.166.177 | 10.166.166.177 |
| 90 | 10.166.166.178/31 | 10.166.166.178 – 10.166.166.179 | 10.166.166.179 |
| 91 | 10.166.166.180/31 | 10.166.166.180 – 10.166.166.181 | 10.166.166.181 |
| 92 | 10.166.166.182/31 | 10.166.166.182 – 10.166.166.183 | 10.166.166.183 |
| 93 | 10.166.166.184/31 | 10.166.166.184 – 10.166.166.185 | 10.166.166.185 |
| 94 | 10.166.166.186/31 | 10.166.166.186 – 10.166.166.187 | 10.166.166.187 |
| 95 | 10.166.166.188/31 | 10.166.166.188 – 10.166.166.189 | 10.166.166.189 |
| 96 | 10.166.166.190/31 | 10.166.166.190 – 10.166.166.191 | 10.166.166.191 |
| 97 | 10.166.166.192/31 | 10.166.166.192 – 10.166.166.193 | 10.166.166.193 |
| 98 | 10.166.166.194/31 | 10.166.166.194 – 10.166.166.195 | 10.166.166.195 |
| 99 | 10.166.166.196/31 | 10.166.166.196 – 10.166.166.197 | 10.166.166.197 |
| 100 | 10.166.166.198/31 | 10.166.166.198 – 10.166.166.199 | 10.166.166.199 |
| 101 | 10.166.166.200/31 | 10.166.166.200 – 10.166.166.201 | 10.166.166.201 |
| 102 | 10.166.166.202/31 | 10.166.166.202 – 10.166.166.203 | 10.166.166.203 |
| 103 | 10.166.166.204/31 | 10.166.166.204 – 10.166.166.205 | 10.166.166.205 |
| 104 | 10.166.166.206/31 | 10.166.166.206 – 10.166.166.207 | 10.166.166.207 |
| 105 | 10.166.166.208/31 | 10.166.166.208 – 10.166.166.209 | 10.166.166.209 |
| 106 | 10.166.166.210/31 | 10.166.166.210 – 10.166.166.211 | 10.166.166.211 |
| 107 | 10.166.166.212/31 | 10.166.166.212 – 10.166.166.213 | 10.166.166.213 |
| 108 | 10.166.166.214/31 | 10.166.166.214 – 10.166.166.215 | 10.166.166.215 |
| 109 | 10.166.166.216/31 | 10.166.166.216 – 10.166.166.217 | 10.166.166.217 |
| 110 | 10.166.166.218/31 | 10.166.166.218 – 10.166.166.219 | 10.166.166.219 |
| 111 | 10.166.166.220/31 | 10.166.166.220 – 10.166.166.221 | 10.166.166.221 |
| 112 | 10.166.166.222/31 | 10.166.166.222 – 10.166.166.223 | 10.166.166.223 |
| 113 | 10.166.166.224/31 | 10.166.166.224 – 10.166.166.225 | 10.166.166.225 |
| 114 | 10.166.166.226/31 | 10.166.166.226 – 10.166.166.227 | 10.166.166.227 |
| 115 | 10.166.166.228/31 | 10.166.166.228 – 10.166.166.229 | 10.166.166.229 |
| 116 | 10.166.166.230/31 | 10.166.166.230 – 10.166.166.231 | 10.166.166.231 |
| 117 | 10.166.166.232/31 | 10.166.166.232 – 10.166.166.233 | 10.166.166.233 |
| 118 | 10.166.166.234/31 | 10.166.166.234 – 10.166.166.235 | 10.166.166.235 |
| 119 | 10.166.166.236/31 | 10.166.166.236 – 10.166.166.237 | 10.166.166.237 |
| 120 | 10.166.166.238/31 | 10.166.166.238 – 10.166.166.239 | 10.166.166.239 |
| 121 | 10.166.166.240/31 | 10.166.166.240 – 10.166.166.241 | 10.166.166.241 |
| 122 | 10.166.166.242/31 | 10.166.166.242 – 10.166.166.243 | 10.166.166.243 |
| 123 | 10.166.166.244/31 | 10.166.166.244 – 10.166.166.245 | 10.166.166.245 |
| 124 | 10.166.166.246/31 | 10.166.166.246 – 10.166.166.247 | 10.166.166.247 |
| 125 | 10.166.166.248/31 | 10.166.166.248 – 10.166.166.249 | 10.166.166.249 |
| 126 | 10.166.166.250/31 | 10.166.166.250 – 10.166.166.251 | 10.166.166.251 |
| 127 | 10.166.166.252/31 | 10.166.166.252 – 10.166.166.253 | 10.166.166.253 |
| 128 | 10.166.166.254/31 | 10.166.166.254 – 10.166.166.255 | 10.166.166.255 |
| 129 | 10.166.167.0/31 | 10.166.167.0 – 10.166.167.1 | 10.166.167.1 |
| 130 | 10.166.167.2/31 | 10.166.167.2 – 10.166.167.3 | 10.166.167.3 |
| 131 | 10.166.167.4/31 | 10.166.167.4 – 10.166.167.5 | 10.166.167.5 |
| 132 | 10.166.167.6/31 | 10.166.167.6 – 10.166.167.7 | 10.166.167.7 |
| 133 | 10.166.167.8/31 | 10.166.167.8 – 10.166.167.9 | 10.166.167.9 |
| 134 | 10.166.167.10/31 | 10.166.167.10 – 10.166.167.11 | 10.166.167.11 |
| 135 | 10.166.167.12/31 | 10.166.167.12 – 10.166.167.13 | 10.166.167.13 |
| 136 | 10.166.167.14/31 | 10.166.167.14 – 10.166.167.15 | 10.166.167.15 |
| 137 | 10.166.167.16/31 | 10.166.167.16 – 10.166.167.17 | 10.166.167.17 |
| 138 | 10.166.167.18/31 | 10.166.167.18 – 10.166.167.19 | 10.166.167.19 |
| 139 | 10.166.167.20/31 | 10.166.167.20 – 10.166.167.21 | 10.166.167.21 |
| 140 | 10.166.167.22/31 | 10.166.167.22 – 10.166.167.23 | 10.166.167.23 |
| 141 | 10.166.167.24/31 | 10.166.167.24 – 10.166.167.25 | 10.166.167.25 |
| 142 | 10.166.167.26/31 | 10.166.167.26 – 10.166.167.27 | 10.166.167.27 |
| 143 | 10.166.167.28/31 | 10.166.167.28 – 10.166.167.29 | 10.166.167.29 |
| 144 | 10.166.167.30/31 | 10.166.167.30 – 10.166.167.31 | 10.166.167.31 |
| 145 | 10.166.167.32/31 | 10.166.167.32 – 10.166.167.33 | 10.166.167.33 |
| 146 | 10.166.167.34/31 | 10.166.167.34 – 10.166.167.35 | 10.166.167.35 |
| 147 | 10.166.167.36/31 | 10.166.167.36 – 10.166.167.37 | 10.166.167.37 |
| 148 | 10.166.167.38/31 | 10.166.167.38 – 10.166.167.39 | 10.166.167.39 |
| 149 | 10.166.167.40/31 | 10.166.167.40 – 10.166.167.41 | 10.166.167.41 |
| 150 | 10.166.167.42/31 | 10.166.167.42 – 10.166.167.43 | 10.166.167.43 |
| 151 | 10.166.167.44/31 | 10.166.167.44 – 10.166.167.45 | 10.166.167.45 |
| 152 | 10.166.167.46/31 | 10.166.167.46 – 10.166.167.47 | 10.166.167.47 |
| 153 | 10.166.167.48/31 | 10.166.167.48 – 10.166.167.49 | 10.166.167.49 |
| 154 | 10.166.167.50/31 | 10.166.167.50 – 10.166.167.51 | 10.166.167.51 |
| 155 | 10.166.167.52/31 | 10.166.167.52 – 10.166.167.53 | 10.166.167.53 |
| 156 | 10.166.167.54/31 | 10.166.167.54 – 10.166.167.55 | 10.166.167.55 |
| 157 | 10.166.167.56/31 | 10.166.167.56 – 10.166.167.57 | 10.166.167.57 |
| 158 | 10.166.167.58/31 | 10.166.167.58 – 10.166.167.59 | 10.166.167.59 |
| 159 | 10.166.167.60/31 | 10.166.167.60 – 10.166.167.61 | 10.166.167.61 |
| 160 | 10.166.167.62/31 | 10.166.167.62 – 10.166.167.63 | 10.166.167.63 |
| 161 | 10.166.167.64/31 | 10.166.167.64 – 10.166.167.65 | 10.166.167.65 |
| 162 | 10.166.167.66/31 | 10.166.167.66 – 10.166.167.67 | 10.166.167.67 |
| 163 | 10.166.167.68/31 | 10.166.167.68 – 10.166.167.69 | 10.166.167.69 |
| 164 | 10.166.167.70/31 | 10.166.167.70 – 10.166.167.71 | 10.166.167.71 |
| 165 | 10.166.167.72/31 | 10.166.167.72 – 10.166.167.73 | 10.166.167.73 |
| 166 | 10.166.167.74/31 | 10.166.167.74 – 10.166.167.75 | 10.166.167.75 |
| 167 | 10.166.167.76/31 | 10.166.167.76 – 10.166.167.77 | 10.166.167.77 |
| 168 | 10.166.167.78/31 | 10.166.167.78 – 10.166.167.79 | 10.166.167.79 |
| 169 | 10.166.167.80/31 | 10.166.167.80 – 10.166.167.81 | 10.166.167.81 |
| 170 | 10.166.167.82/31 | 10.166.167.82 – 10.166.167.83 | 10.166.167.83 |
| 171 | 10.166.167.84/31 | 10.166.167.84 – 10.166.167.85 | 10.166.167.85 |
| 172 | 10.166.167.86/31 | 10.166.167.86 – 10.166.167.87 | 10.166.167.87 |
| 173 | 10.166.167.88/31 | 10.166.167.88 – 10.166.167.89 | 10.166.167.89 |
| 174 | 10.166.167.90/31 | 10.166.167.90 – 10.166.167.91 | 10.166.167.91 |
| 175 | 10.166.167.92/31 | 10.166.167.92 – 10.166.167.93 | 10.166.167.93 |
| 176 | 10.166.167.94/31 | 10.166.167.94 – 10.166.167.95 | 10.166.167.95 |
| 177 | 10.166.167.96/31 | 10.166.167.96 – 10.166.167.97 | 10.166.167.97 |
| 178 | 10.166.167.98/31 | 10.166.167.98 – 10.166.167.99 | 10.166.167.99 |
| 179 | 10.166.167.100/31 | 10.166.167.100 – 10.166.167.101 | 10.166.167.101 |
| 180 | 10.166.167.102/31 | 10.166.167.102 – 10.166.167.103 | 10.166.167.103 |
| 181 | 10.166.167.104/31 | 10.166.167.104 – 10.166.167.105 | 10.166.167.105 |
| 182 | 10.166.167.106/31 | 10.166.167.106 – 10.166.167.107 | 10.166.167.107 |
| 183 | 10.166.167.108/31 | 10.166.167.108 – 10.166.167.109 | 10.166.167.109 |
| 184 | 10.166.167.110/31 | 10.166.167.110 – 10.166.167.111 | 10.166.167.111 |
| 185 | 10.166.167.112/31 | 10.166.167.112 – 10.166.167.113 | 10.166.167.113 |
| 186 | 10.166.167.114/31 | 10.166.167.114 – 10.166.167.115 | 10.166.167.115 |
| 187 | 10.166.167.116/31 | 10.166.167.116 – 10.166.167.117 | 10.166.167.117 |
| 188 | 10.166.167.118/31 | 10.166.167.118 – 10.166.167.119 | 10.166.167.119 |
| 189 | 10.166.167.120/31 | 10.166.167.120 – 10.166.167.121 | 10.166.167.121 |
| 190 | 10.166.167.122/31 | 10.166.167.122 – 10.166.167.123 | 10.166.167.123 |
| 191 | 10.166.167.124/31 | 10.166.167.124 – 10.166.167.125 | 10.166.167.125 |
| 192 | 10.166.167.126/31 | 10.166.167.126 – 10.166.167.127 | 10.166.167.127 |
| 193 | 10.166.167.128/31 | 10.166.167.128 – 10.166.167.129 | 10.166.167.129 |
| 194 | 10.166.167.130/31 | 10.166.167.130 – 10.166.167.131 | 10.166.167.131 |
| 195 | 10.166.167.132/31 | 10.166.167.132 – 10.166.167.133 | 10.166.167.133 |
| 196 | 10.166.167.134/31 | 10.166.167.134 – 10.166.167.135 | 10.166.167.135 |
| 197 | 10.166.167.136/31 | 10.166.167.136 – 10.166.167.137 | 10.166.167.137 |
| 198 | 10.166.167.138/31 | 10.166.167.138 – 10.166.167.139 | 10.166.167.139 |
| 199 | 10.166.167.140/31 | 10.166.167.140 – 10.166.167.141 | 10.166.167.141 |
| 200 | 10.166.167.142/31 | 10.166.167.142 – 10.166.167.143 | 10.166.167.143 |
| 201 | 10.166.167.144/31 | 10.166.167.144 – 10.166.167.145 | 10.166.167.145 |
| 202 | 10.166.167.146/31 | 10.166.167.146 – 10.166.167.147 | 10.166.167.147 |
| 203 | 10.166.167.148/31 | 10.166.167.148 – 10.166.167.149 | 10.166.167.149 |
| 204 | 10.166.167.150/31 | 10.166.167.150 – 10.166.167.151 | 10.166.167.151 |
| 205 | 10.166.167.152/31 | 10.166.167.152 – 10.166.167.153 | 10.166.167.153 |
| 206 | 10.166.167.154/31 | 10.166.167.154 – 10.166.167.155 | 10.166.167.155 |
| 207 | 10.166.167.156/31 | 10.166.167.156 – 10.166.167.157 | 10.166.167.157 |
| 208 | 10.166.167.158/31 | 10.166.167.158 – 10.166.167.159 | 10.166.167.159 |
| 209 | 10.166.167.160/31 | 10.166.167.160 – 10.166.167.161 | 10.166.167.161 |
| 210 | 10.166.167.162/31 | 10.166.167.162 – 10.166.167.163 | 10.166.167.163 |
| 211 | 10.166.167.164/31 | 10.166.167.164 – 10.166.167.165 | 10.166.167.165 |
| 212 | 10.166.167.166/31 | 10.166.167.166 – 10.166.167.167 | 10.166.167.167 |
| 213 | 10.166.167.168/31 | 10.166.167.168 – 10.166.167.169 | 10.166.167.169 |
| 214 | 10.166.167.170/31 | 10.166.167.170 – 10.166.167.171 | 10.166.167.171 |
| 215 | 10.166.167.172/31 | 10.166.167.172 – 10.166.167.173 | 10.166.167.173 |
| 216 | 10.166.167.174/31 | 10.166.167.174 – 10.166.167.175 | 10.166.167.175 |
| 217 | 10.166.167.176/31 | 10.166.167.176 – 10.166.167.177 | 10.166.167.177 |
| 218 | 10.166.167.178/31 | 10.166.167.178 – 10.166.167.179 | 10.166.167.179 |
| 219 | 10.166.167.180/31 | 10.166.167.180 – 10.166.167.181 | 10.166.167.181 |
| 220 | 10.166.167.182/31 | 10.166.167.182 – 10.166.167.183 | 10.166.167.183 |
| 221 | 10.166.167.184/31 | 10.166.167.184 – 10.166.167.185 | 10.166.167.185 |
| 222 | 10.166.167.186/31 | 10.166.167.186 – 10.166.167.187 | 10.166.167.187 |
| 223 | 10.166.167.188/31 | 10.166.167.188 – 10.166.167.189 | 10.166.167.189 |
| 224 | 10.166.167.190/31 | 10.166.167.190 – 10.166.167.191 | 10.166.167.191 |
| 225 | 10.166.167.192/31 | 10.166.167.192 – 10.166.167.193 | 10.166.167.193 |
| 226 | 10.166.167.194/31 | 10.166.167.194 – 10.166.167.195 | 10.166.167.195 |
| 227 | 10.166.167.196/31 | 10.166.167.196 – 10.166.167.197 | 10.166.167.197 |
| 228 | 10.166.167.198/31 | 10.166.167.198 – 10.166.167.199 | 10.166.167.199 |
| 229 | 10.166.167.200/31 | 10.166.167.200 – 10.166.167.201 | 10.166.167.201 |
| 230 | 10.166.167.202/31 | 10.166.167.202 – 10.166.167.203 | 10.166.167.203 |
| 231 | 10.166.167.204/31 | 10.166.167.204 – 10.166.167.205 | 10.166.167.205 |
| 232 | 10.166.167.206/31 | 10.166.167.206 – 10.166.167.207 | 10.166.167.207 |
| 233 | 10.166.167.208/31 | 10.166.167.208 – 10.166.167.209 | 10.166.167.209 |
| 234 | 10.166.167.210/31 | 10.166.167.210 – 10.166.167.211 | 10.166.167.211 |
| 235 | 10.166.167.212/31 | 10.166.167.212 – 10.166.167.213 | 10.166.167.213 |
| 236 | 10.166.167.214/31 | 10.166.167.214 – 10.166.167.215 | 10.166.167.215 |
| 237 | 10.166.167.216/31 | 10.166.167.216 – 10.166.167.217 | 10.166.167.217 |
| 238 | 10.166.167.218/31 | 10.166.167.218 – 10.166.167.219 | 10.166.167.219 |
| 239 | 10.166.167.220/31 | 10.166.167.220 – 10.166.167.221 | 10.166.167.221 |
| 240 | 10.166.167.222/31 | 10.166.167.222 – 10.166.167.223 | 10.166.167.223 |
| 241 | 10.166.167.224/31 | 10.166.167.224 – 10.166.167.225 | 10.166.167.225 |
| 242 | 10.166.167.226/31 | 10.166.167.226 – 10.166.167.227 | 10.166.167.227 |
| 243 | 10.166.167.228/31 | 10.166.167.228 – 10.166.167.229 | 10.166.167.229 |
| 244 | 10.166.167.230/31 | 10.166.167.230 – 10.166.167.231 | 10.166.167.231 |
| 245 | 10.166.167.232/31 | 10.166.167.232 – 10.166.167.233 | 10.166.167.233 |
| 246 | 10.166.167.234/31 | 10.166.167.234 – 10.166.167.235 | 10.166.167.235 |
| 247 | 10.166.167.236/31 | 10.166.167.236 – 10.166.167.237 | 10.166.167.237 |
| 248 | 10.166.167.238/31 | 10.166.167.238 – 10.166.167.239 | 10.166.167.239 |
| 249 | 10.166.167.240/31 | 10.166.167.240 – 10.166.167.241 | 10.166.167.241 |
| 250 | 10.166.167.242/31 | 10.166.167.242 – 10.166.167.243 | 10.166.167.243 |
| 251 | 10.166.167.244/31 | 10.166.167.244 – 10.166.167.245 | 10.166.167.245 |
| 252 | 10.166.167.246/31 | 10.166.167.246 – 10.166.167.247 | 10.166.167.247 |
| 253 | 10.166.167.248/31 | 10.166.167.248 – 10.166.167.249 | 10.166.167.249 |
| 254 | 10.166.167.250/31 | 10.166.167.250 – 10.166.167.251 | 10.166.167.251 |
| 255 | 10.166.167.252/31 | 10.166.167.252 – 10.166.167.253 | 10.166.167.253 |
| 256 | 10.166.167.254/31 | 10.166.167.254 – 10.166.167.255 | 10.166.167.255 |
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 /23 |
|---|---|---|---|---|
| /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 | 1 |
| /24 | 255.255.255.0 | 256 | 254 | 2 split → |
| /25 | 255.255.255.128 | 128 | 126 | 4 split → |
| /26 | 255.255.255.192 | 64 | 62 | 8 split → |
| /27 | 255.255.255.224 | 32 | 30 | 16 split → |
| /28 | 255.255.255.240 | 16 | 14 | 32 split → |
| /29 | 255.255.255.248 | 8 | 6 | 64 split → |
| /30 | 255.255.255.252 | 4 | 2 | 128 split → |
| /31 | 255.255.255.254 | 2 | 2 | 256 split → |
| /32 | 255.255.255.255 | 1 | 1 | 512 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.