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)10.40.232.0/23
network10.40.232.0/23
broadcast10.40.233.255
first host10.40.232.1
last host10.40.233.254
subnet mask255.255.254.0
wildcard0.0.1.255
addresses512
usable hosts510
classA
ipcalc 10.40.232.0/23
address00001010.00101000.11101000.00000000
subnet mask11111111.11111111.11111110.00000000
network00001010.00101000.11101000.00000000
broadcast00001010.00101000.11101001.11111111
green = network part, grey = host part
hex0x0a28e800
decimal170452992
reverse dns0.232.40.10.in-addr.arpa
ipv4-mapped::ffff:a28:e800
/23 split into /31 · 256 subnets
close ×| # | network | host range | broadcast |
|---|---|---|---|
| 1 | 10.40.232.0/31 | 10.40.232.0 – 10.40.232.1 | 10.40.232.1 |
| 2 | 10.40.232.2/31 | 10.40.232.2 – 10.40.232.3 | 10.40.232.3 |
| 3 | 10.40.232.4/31 | 10.40.232.4 – 10.40.232.5 | 10.40.232.5 |
| 4 | 10.40.232.6/31 | 10.40.232.6 – 10.40.232.7 | 10.40.232.7 |
| 5 | 10.40.232.8/31 | 10.40.232.8 – 10.40.232.9 | 10.40.232.9 |
| 6 | 10.40.232.10/31 | 10.40.232.10 – 10.40.232.11 | 10.40.232.11 |
| 7 | 10.40.232.12/31 | 10.40.232.12 – 10.40.232.13 | 10.40.232.13 |
| 8 | 10.40.232.14/31 | 10.40.232.14 – 10.40.232.15 | 10.40.232.15 |
| 9 | 10.40.232.16/31 | 10.40.232.16 – 10.40.232.17 | 10.40.232.17 |
| 10 | 10.40.232.18/31 | 10.40.232.18 – 10.40.232.19 | 10.40.232.19 |
| 11 | 10.40.232.20/31 | 10.40.232.20 – 10.40.232.21 | 10.40.232.21 |
| 12 | 10.40.232.22/31 | 10.40.232.22 – 10.40.232.23 | 10.40.232.23 |
| 13 | 10.40.232.24/31 | 10.40.232.24 – 10.40.232.25 | 10.40.232.25 |
| 14 | 10.40.232.26/31 | 10.40.232.26 – 10.40.232.27 | 10.40.232.27 |
| 15 | 10.40.232.28/31 | 10.40.232.28 – 10.40.232.29 | 10.40.232.29 |
| 16 | 10.40.232.30/31 | 10.40.232.30 – 10.40.232.31 | 10.40.232.31 |
| 17 | 10.40.232.32/31 | 10.40.232.32 – 10.40.232.33 | 10.40.232.33 |
| 18 | 10.40.232.34/31 | 10.40.232.34 – 10.40.232.35 | 10.40.232.35 |
| 19 | 10.40.232.36/31 | 10.40.232.36 – 10.40.232.37 | 10.40.232.37 |
| 20 | 10.40.232.38/31 | 10.40.232.38 – 10.40.232.39 | 10.40.232.39 |
| 21 | 10.40.232.40/31 | 10.40.232.40 – 10.40.232.41 | 10.40.232.41 |
| 22 | 10.40.232.42/31 | 10.40.232.42 – 10.40.232.43 | 10.40.232.43 |
| 23 | 10.40.232.44/31 | 10.40.232.44 – 10.40.232.45 | 10.40.232.45 |
| 24 | 10.40.232.46/31 | 10.40.232.46 – 10.40.232.47 | 10.40.232.47 |
| 25 | 10.40.232.48/31 | 10.40.232.48 – 10.40.232.49 | 10.40.232.49 |
| 26 | 10.40.232.50/31 | 10.40.232.50 – 10.40.232.51 | 10.40.232.51 |
| 27 | 10.40.232.52/31 | 10.40.232.52 – 10.40.232.53 | 10.40.232.53 |
| 28 | 10.40.232.54/31 | 10.40.232.54 – 10.40.232.55 | 10.40.232.55 |
| 29 | 10.40.232.56/31 | 10.40.232.56 – 10.40.232.57 | 10.40.232.57 |
| 30 | 10.40.232.58/31 | 10.40.232.58 – 10.40.232.59 | 10.40.232.59 |
| 31 | 10.40.232.60/31 | 10.40.232.60 – 10.40.232.61 | 10.40.232.61 |
| 32 | 10.40.232.62/31 | 10.40.232.62 – 10.40.232.63 | 10.40.232.63 |
| 33 | 10.40.232.64/31 | 10.40.232.64 – 10.40.232.65 | 10.40.232.65 |
| 34 | 10.40.232.66/31 | 10.40.232.66 – 10.40.232.67 | 10.40.232.67 |
| 35 | 10.40.232.68/31 | 10.40.232.68 – 10.40.232.69 | 10.40.232.69 |
| 36 | 10.40.232.70/31 | 10.40.232.70 – 10.40.232.71 | 10.40.232.71 |
| 37 | 10.40.232.72/31 | 10.40.232.72 – 10.40.232.73 | 10.40.232.73 |
| 38 | 10.40.232.74/31 | 10.40.232.74 – 10.40.232.75 | 10.40.232.75 |
| 39 | 10.40.232.76/31 | 10.40.232.76 – 10.40.232.77 | 10.40.232.77 |
| 40 | 10.40.232.78/31 | 10.40.232.78 – 10.40.232.79 | 10.40.232.79 |
| 41 | 10.40.232.80/31 | 10.40.232.80 – 10.40.232.81 | 10.40.232.81 |
| 42 | 10.40.232.82/31 | 10.40.232.82 – 10.40.232.83 | 10.40.232.83 |
| 43 | 10.40.232.84/31 | 10.40.232.84 – 10.40.232.85 | 10.40.232.85 |
| 44 | 10.40.232.86/31 | 10.40.232.86 – 10.40.232.87 | 10.40.232.87 |
| 45 | 10.40.232.88/31 | 10.40.232.88 – 10.40.232.89 | 10.40.232.89 |
| 46 | 10.40.232.90/31 | 10.40.232.90 – 10.40.232.91 | 10.40.232.91 |
| 47 | 10.40.232.92/31 | 10.40.232.92 – 10.40.232.93 | 10.40.232.93 |
| 48 | 10.40.232.94/31 | 10.40.232.94 – 10.40.232.95 | 10.40.232.95 |
| 49 | 10.40.232.96/31 | 10.40.232.96 – 10.40.232.97 | 10.40.232.97 |
| 50 | 10.40.232.98/31 | 10.40.232.98 – 10.40.232.99 | 10.40.232.99 |
| 51 | 10.40.232.100/31 | 10.40.232.100 – 10.40.232.101 | 10.40.232.101 |
| 52 | 10.40.232.102/31 | 10.40.232.102 – 10.40.232.103 | 10.40.232.103 |
| 53 | 10.40.232.104/31 | 10.40.232.104 – 10.40.232.105 | 10.40.232.105 |
| 54 | 10.40.232.106/31 | 10.40.232.106 – 10.40.232.107 | 10.40.232.107 |
| 55 | 10.40.232.108/31 | 10.40.232.108 – 10.40.232.109 | 10.40.232.109 |
| 56 | 10.40.232.110/31 | 10.40.232.110 – 10.40.232.111 | 10.40.232.111 |
| 57 | 10.40.232.112/31 | 10.40.232.112 – 10.40.232.113 | 10.40.232.113 |
| 58 | 10.40.232.114/31 | 10.40.232.114 – 10.40.232.115 | 10.40.232.115 |
| 59 | 10.40.232.116/31 | 10.40.232.116 – 10.40.232.117 | 10.40.232.117 |
| 60 | 10.40.232.118/31 | 10.40.232.118 – 10.40.232.119 | 10.40.232.119 |
| 61 | 10.40.232.120/31 | 10.40.232.120 – 10.40.232.121 | 10.40.232.121 |
| 62 | 10.40.232.122/31 | 10.40.232.122 – 10.40.232.123 | 10.40.232.123 |
| 63 | 10.40.232.124/31 | 10.40.232.124 – 10.40.232.125 | 10.40.232.125 |
| 64 | 10.40.232.126/31 | 10.40.232.126 – 10.40.232.127 | 10.40.232.127 |
| 65 | 10.40.232.128/31 | 10.40.232.128 – 10.40.232.129 | 10.40.232.129 |
| 66 | 10.40.232.130/31 | 10.40.232.130 – 10.40.232.131 | 10.40.232.131 |
| 67 | 10.40.232.132/31 | 10.40.232.132 – 10.40.232.133 | 10.40.232.133 |
| 68 | 10.40.232.134/31 | 10.40.232.134 – 10.40.232.135 | 10.40.232.135 |
| 69 | 10.40.232.136/31 | 10.40.232.136 – 10.40.232.137 | 10.40.232.137 |
| 70 | 10.40.232.138/31 | 10.40.232.138 – 10.40.232.139 | 10.40.232.139 |
| 71 | 10.40.232.140/31 | 10.40.232.140 – 10.40.232.141 | 10.40.232.141 |
| 72 | 10.40.232.142/31 | 10.40.232.142 – 10.40.232.143 | 10.40.232.143 |
| 73 | 10.40.232.144/31 | 10.40.232.144 – 10.40.232.145 | 10.40.232.145 |
| 74 | 10.40.232.146/31 | 10.40.232.146 – 10.40.232.147 | 10.40.232.147 |
| 75 | 10.40.232.148/31 | 10.40.232.148 – 10.40.232.149 | 10.40.232.149 |
| 76 | 10.40.232.150/31 | 10.40.232.150 – 10.40.232.151 | 10.40.232.151 |
| 77 | 10.40.232.152/31 | 10.40.232.152 – 10.40.232.153 | 10.40.232.153 |
| 78 | 10.40.232.154/31 | 10.40.232.154 – 10.40.232.155 | 10.40.232.155 |
| 79 | 10.40.232.156/31 | 10.40.232.156 – 10.40.232.157 | 10.40.232.157 |
| 80 | 10.40.232.158/31 | 10.40.232.158 – 10.40.232.159 | 10.40.232.159 |
| 81 | 10.40.232.160/31 | 10.40.232.160 – 10.40.232.161 | 10.40.232.161 |
| 82 | 10.40.232.162/31 | 10.40.232.162 – 10.40.232.163 | 10.40.232.163 |
| 83 | 10.40.232.164/31 | 10.40.232.164 – 10.40.232.165 | 10.40.232.165 |
| 84 | 10.40.232.166/31 | 10.40.232.166 – 10.40.232.167 | 10.40.232.167 |
| 85 | 10.40.232.168/31 | 10.40.232.168 – 10.40.232.169 | 10.40.232.169 |
| 86 | 10.40.232.170/31 | 10.40.232.170 – 10.40.232.171 | 10.40.232.171 |
| 87 | 10.40.232.172/31 | 10.40.232.172 – 10.40.232.173 | 10.40.232.173 |
| 88 | 10.40.232.174/31 | 10.40.232.174 – 10.40.232.175 | 10.40.232.175 |
| 89 | 10.40.232.176/31 | 10.40.232.176 – 10.40.232.177 | 10.40.232.177 |
| 90 | 10.40.232.178/31 | 10.40.232.178 – 10.40.232.179 | 10.40.232.179 |
| 91 | 10.40.232.180/31 | 10.40.232.180 – 10.40.232.181 | 10.40.232.181 |
| 92 | 10.40.232.182/31 | 10.40.232.182 – 10.40.232.183 | 10.40.232.183 |
| 93 | 10.40.232.184/31 | 10.40.232.184 – 10.40.232.185 | 10.40.232.185 |
| 94 | 10.40.232.186/31 | 10.40.232.186 – 10.40.232.187 | 10.40.232.187 |
| 95 | 10.40.232.188/31 | 10.40.232.188 – 10.40.232.189 | 10.40.232.189 |
| 96 | 10.40.232.190/31 | 10.40.232.190 – 10.40.232.191 | 10.40.232.191 |
| 97 | 10.40.232.192/31 | 10.40.232.192 – 10.40.232.193 | 10.40.232.193 |
| 98 | 10.40.232.194/31 | 10.40.232.194 – 10.40.232.195 | 10.40.232.195 |
| 99 | 10.40.232.196/31 | 10.40.232.196 – 10.40.232.197 | 10.40.232.197 |
| 100 | 10.40.232.198/31 | 10.40.232.198 – 10.40.232.199 | 10.40.232.199 |
| 101 | 10.40.232.200/31 | 10.40.232.200 – 10.40.232.201 | 10.40.232.201 |
| 102 | 10.40.232.202/31 | 10.40.232.202 – 10.40.232.203 | 10.40.232.203 |
| 103 | 10.40.232.204/31 | 10.40.232.204 – 10.40.232.205 | 10.40.232.205 |
| 104 | 10.40.232.206/31 | 10.40.232.206 – 10.40.232.207 | 10.40.232.207 |
| 105 | 10.40.232.208/31 | 10.40.232.208 – 10.40.232.209 | 10.40.232.209 |
| 106 | 10.40.232.210/31 | 10.40.232.210 – 10.40.232.211 | 10.40.232.211 |
| 107 | 10.40.232.212/31 | 10.40.232.212 – 10.40.232.213 | 10.40.232.213 |
| 108 | 10.40.232.214/31 | 10.40.232.214 – 10.40.232.215 | 10.40.232.215 |
| 109 | 10.40.232.216/31 | 10.40.232.216 – 10.40.232.217 | 10.40.232.217 |
| 110 | 10.40.232.218/31 | 10.40.232.218 – 10.40.232.219 | 10.40.232.219 |
| 111 | 10.40.232.220/31 | 10.40.232.220 – 10.40.232.221 | 10.40.232.221 |
| 112 | 10.40.232.222/31 | 10.40.232.222 – 10.40.232.223 | 10.40.232.223 |
| 113 | 10.40.232.224/31 | 10.40.232.224 – 10.40.232.225 | 10.40.232.225 |
| 114 | 10.40.232.226/31 | 10.40.232.226 – 10.40.232.227 | 10.40.232.227 |
| 115 | 10.40.232.228/31 | 10.40.232.228 – 10.40.232.229 | 10.40.232.229 |
| 116 | 10.40.232.230/31 | 10.40.232.230 – 10.40.232.231 | 10.40.232.231 |
| 117 | 10.40.232.232/31 | 10.40.232.232 – 10.40.232.233 | 10.40.232.233 |
| 118 | 10.40.232.234/31 | 10.40.232.234 – 10.40.232.235 | 10.40.232.235 |
| 119 | 10.40.232.236/31 | 10.40.232.236 – 10.40.232.237 | 10.40.232.237 |
| 120 | 10.40.232.238/31 | 10.40.232.238 – 10.40.232.239 | 10.40.232.239 |
| 121 | 10.40.232.240/31 | 10.40.232.240 – 10.40.232.241 | 10.40.232.241 |
| 122 | 10.40.232.242/31 | 10.40.232.242 – 10.40.232.243 | 10.40.232.243 |
| 123 | 10.40.232.244/31 | 10.40.232.244 – 10.40.232.245 | 10.40.232.245 |
| 124 | 10.40.232.246/31 | 10.40.232.246 – 10.40.232.247 | 10.40.232.247 |
| 125 | 10.40.232.248/31 | 10.40.232.248 – 10.40.232.249 | 10.40.232.249 |
| 126 | 10.40.232.250/31 | 10.40.232.250 – 10.40.232.251 | 10.40.232.251 |
| 127 | 10.40.232.252/31 | 10.40.232.252 – 10.40.232.253 | 10.40.232.253 |
| 128 | 10.40.232.254/31 | 10.40.232.254 – 10.40.232.255 | 10.40.232.255 |
| 129 | 10.40.233.0/31 | 10.40.233.0 – 10.40.233.1 | 10.40.233.1 |
| 130 | 10.40.233.2/31 | 10.40.233.2 – 10.40.233.3 | 10.40.233.3 |
| 131 | 10.40.233.4/31 | 10.40.233.4 – 10.40.233.5 | 10.40.233.5 |
| 132 | 10.40.233.6/31 | 10.40.233.6 – 10.40.233.7 | 10.40.233.7 |
| 133 | 10.40.233.8/31 | 10.40.233.8 – 10.40.233.9 | 10.40.233.9 |
| 134 | 10.40.233.10/31 | 10.40.233.10 – 10.40.233.11 | 10.40.233.11 |
| 135 | 10.40.233.12/31 | 10.40.233.12 – 10.40.233.13 | 10.40.233.13 |
| 136 | 10.40.233.14/31 | 10.40.233.14 – 10.40.233.15 | 10.40.233.15 |
| 137 | 10.40.233.16/31 | 10.40.233.16 – 10.40.233.17 | 10.40.233.17 |
| 138 | 10.40.233.18/31 | 10.40.233.18 – 10.40.233.19 | 10.40.233.19 |
| 139 | 10.40.233.20/31 | 10.40.233.20 – 10.40.233.21 | 10.40.233.21 |
| 140 | 10.40.233.22/31 | 10.40.233.22 – 10.40.233.23 | 10.40.233.23 |
| 141 | 10.40.233.24/31 | 10.40.233.24 – 10.40.233.25 | 10.40.233.25 |
| 142 | 10.40.233.26/31 | 10.40.233.26 – 10.40.233.27 | 10.40.233.27 |
| 143 | 10.40.233.28/31 | 10.40.233.28 – 10.40.233.29 | 10.40.233.29 |
| 144 | 10.40.233.30/31 | 10.40.233.30 – 10.40.233.31 | 10.40.233.31 |
| 145 | 10.40.233.32/31 | 10.40.233.32 – 10.40.233.33 | 10.40.233.33 |
| 146 | 10.40.233.34/31 | 10.40.233.34 – 10.40.233.35 | 10.40.233.35 |
| 147 | 10.40.233.36/31 | 10.40.233.36 – 10.40.233.37 | 10.40.233.37 |
| 148 | 10.40.233.38/31 | 10.40.233.38 – 10.40.233.39 | 10.40.233.39 |
| 149 | 10.40.233.40/31 | 10.40.233.40 – 10.40.233.41 | 10.40.233.41 |
| 150 | 10.40.233.42/31 | 10.40.233.42 – 10.40.233.43 | 10.40.233.43 |
| 151 | 10.40.233.44/31 | 10.40.233.44 – 10.40.233.45 | 10.40.233.45 |
| 152 | 10.40.233.46/31 | 10.40.233.46 – 10.40.233.47 | 10.40.233.47 |
| 153 | 10.40.233.48/31 | 10.40.233.48 – 10.40.233.49 | 10.40.233.49 |
| 154 | 10.40.233.50/31 | 10.40.233.50 – 10.40.233.51 | 10.40.233.51 |
| 155 | 10.40.233.52/31 | 10.40.233.52 – 10.40.233.53 | 10.40.233.53 |
| 156 | 10.40.233.54/31 | 10.40.233.54 – 10.40.233.55 | 10.40.233.55 |
| 157 | 10.40.233.56/31 | 10.40.233.56 – 10.40.233.57 | 10.40.233.57 |
| 158 | 10.40.233.58/31 | 10.40.233.58 – 10.40.233.59 | 10.40.233.59 |
| 159 | 10.40.233.60/31 | 10.40.233.60 – 10.40.233.61 | 10.40.233.61 |
| 160 | 10.40.233.62/31 | 10.40.233.62 – 10.40.233.63 | 10.40.233.63 |
| 161 | 10.40.233.64/31 | 10.40.233.64 – 10.40.233.65 | 10.40.233.65 |
| 162 | 10.40.233.66/31 | 10.40.233.66 – 10.40.233.67 | 10.40.233.67 |
| 163 | 10.40.233.68/31 | 10.40.233.68 – 10.40.233.69 | 10.40.233.69 |
| 164 | 10.40.233.70/31 | 10.40.233.70 – 10.40.233.71 | 10.40.233.71 |
| 165 | 10.40.233.72/31 | 10.40.233.72 – 10.40.233.73 | 10.40.233.73 |
| 166 | 10.40.233.74/31 | 10.40.233.74 – 10.40.233.75 | 10.40.233.75 |
| 167 | 10.40.233.76/31 | 10.40.233.76 – 10.40.233.77 | 10.40.233.77 |
| 168 | 10.40.233.78/31 | 10.40.233.78 – 10.40.233.79 | 10.40.233.79 |
| 169 | 10.40.233.80/31 | 10.40.233.80 – 10.40.233.81 | 10.40.233.81 |
| 170 | 10.40.233.82/31 | 10.40.233.82 – 10.40.233.83 | 10.40.233.83 |
| 171 | 10.40.233.84/31 | 10.40.233.84 – 10.40.233.85 | 10.40.233.85 |
| 172 | 10.40.233.86/31 | 10.40.233.86 – 10.40.233.87 | 10.40.233.87 |
| 173 | 10.40.233.88/31 | 10.40.233.88 – 10.40.233.89 | 10.40.233.89 |
| 174 | 10.40.233.90/31 | 10.40.233.90 – 10.40.233.91 | 10.40.233.91 |
| 175 | 10.40.233.92/31 | 10.40.233.92 – 10.40.233.93 | 10.40.233.93 |
| 176 | 10.40.233.94/31 | 10.40.233.94 – 10.40.233.95 | 10.40.233.95 |
| 177 | 10.40.233.96/31 | 10.40.233.96 – 10.40.233.97 | 10.40.233.97 |
| 178 | 10.40.233.98/31 | 10.40.233.98 – 10.40.233.99 | 10.40.233.99 |
| 179 | 10.40.233.100/31 | 10.40.233.100 – 10.40.233.101 | 10.40.233.101 |
| 180 | 10.40.233.102/31 | 10.40.233.102 – 10.40.233.103 | 10.40.233.103 |
| 181 | 10.40.233.104/31 | 10.40.233.104 – 10.40.233.105 | 10.40.233.105 |
| 182 | 10.40.233.106/31 | 10.40.233.106 – 10.40.233.107 | 10.40.233.107 |
| 183 | 10.40.233.108/31 | 10.40.233.108 – 10.40.233.109 | 10.40.233.109 |
| 184 | 10.40.233.110/31 | 10.40.233.110 – 10.40.233.111 | 10.40.233.111 |
| 185 | 10.40.233.112/31 | 10.40.233.112 – 10.40.233.113 | 10.40.233.113 |
| 186 | 10.40.233.114/31 | 10.40.233.114 – 10.40.233.115 | 10.40.233.115 |
| 187 | 10.40.233.116/31 | 10.40.233.116 – 10.40.233.117 | 10.40.233.117 |
| 188 | 10.40.233.118/31 | 10.40.233.118 – 10.40.233.119 | 10.40.233.119 |
| 189 | 10.40.233.120/31 | 10.40.233.120 – 10.40.233.121 | 10.40.233.121 |
| 190 | 10.40.233.122/31 | 10.40.233.122 – 10.40.233.123 | 10.40.233.123 |
| 191 | 10.40.233.124/31 | 10.40.233.124 – 10.40.233.125 | 10.40.233.125 |
| 192 | 10.40.233.126/31 | 10.40.233.126 – 10.40.233.127 | 10.40.233.127 |
| 193 | 10.40.233.128/31 | 10.40.233.128 – 10.40.233.129 | 10.40.233.129 |
| 194 | 10.40.233.130/31 | 10.40.233.130 – 10.40.233.131 | 10.40.233.131 |
| 195 | 10.40.233.132/31 | 10.40.233.132 – 10.40.233.133 | 10.40.233.133 |
| 196 | 10.40.233.134/31 | 10.40.233.134 – 10.40.233.135 | 10.40.233.135 |
| 197 | 10.40.233.136/31 | 10.40.233.136 – 10.40.233.137 | 10.40.233.137 |
| 198 | 10.40.233.138/31 | 10.40.233.138 – 10.40.233.139 | 10.40.233.139 |
| 199 | 10.40.233.140/31 | 10.40.233.140 – 10.40.233.141 | 10.40.233.141 |
| 200 | 10.40.233.142/31 | 10.40.233.142 – 10.40.233.143 | 10.40.233.143 |
| 201 | 10.40.233.144/31 | 10.40.233.144 – 10.40.233.145 | 10.40.233.145 |
| 202 | 10.40.233.146/31 | 10.40.233.146 – 10.40.233.147 | 10.40.233.147 |
| 203 | 10.40.233.148/31 | 10.40.233.148 – 10.40.233.149 | 10.40.233.149 |
| 204 | 10.40.233.150/31 | 10.40.233.150 – 10.40.233.151 | 10.40.233.151 |
| 205 | 10.40.233.152/31 | 10.40.233.152 – 10.40.233.153 | 10.40.233.153 |
| 206 | 10.40.233.154/31 | 10.40.233.154 – 10.40.233.155 | 10.40.233.155 |
| 207 | 10.40.233.156/31 | 10.40.233.156 – 10.40.233.157 | 10.40.233.157 |
| 208 | 10.40.233.158/31 | 10.40.233.158 – 10.40.233.159 | 10.40.233.159 |
| 209 | 10.40.233.160/31 | 10.40.233.160 – 10.40.233.161 | 10.40.233.161 |
| 210 | 10.40.233.162/31 | 10.40.233.162 – 10.40.233.163 | 10.40.233.163 |
| 211 | 10.40.233.164/31 | 10.40.233.164 – 10.40.233.165 | 10.40.233.165 |
| 212 | 10.40.233.166/31 | 10.40.233.166 – 10.40.233.167 | 10.40.233.167 |
| 213 | 10.40.233.168/31 | 10.40.233.168 – 10.40.233.169 | 10.40.233.169 |
| 214 | 10.40.233.170/31 | 10.40.233.170 – 10.40.233.171 | 10.40.233.171 |
| 215 | 10.40.233.172/31 | 10.40.233.172 – 10.40.233.173 | 10.40.233.173 |
| 216 | 10.40.233.174/31 | 10.40.233.174 – 10.40.233.175 | 10.40.233.175 |
| 217 | 10.40.233.176/31 | 10.40.233.176 – 10.40.233.177 | 10.40.233.177 |
| 218 | 10.40.233.178/31 | 10.40.233.178 – 10.40.233.179 | 10.40.233.179 |
| 219 | 10.40.233.180/31 | 10.40.233.180 – 10.40.233.181 | 10.40.233.181 |
| 220 | 10.40.233.182/31 | 10.40.233.182 – 10.40.233.183 | 10.40.233.183 |
| 221 | 10.40.233.184/31 | 10.40.233.184 – 10.40.233.185 | 10.40.233.185 |
| 222 | 10.40.233.186/31 | 10.40.233.186 – 10.40.233.187 | 10.40.233.187 |
| 223 | 10.40.233.188/31 | 10.40.233.188 – 10.40.233.189 | 10.40.233.189 |
| 224 | 10.40.233.190/31 | 10.40.233.190 – 10.40.233.191 | 10.40.233.191 |
| 225 | 10.40.233.192/31 | 10.40.233.192 – 10.40.233.193 | 10.40.233.193 |
| 226 | 10.40.233.194/31 | 10.40.233.194 – 10.40.233.195 | 10.40.233.195 |
| 227 | 10.40.233.196/31 | 10.40.233.196 – 10.40.233.197 | 10.40.233.197 |
| 228 | 10.40.233.198/31 | 10.40.233.198 – 10.40.233.199 | 10.40.233.199 |
| 229 | 10.40.233.200/31 | 10.40.233.200 – 10.40.233.201 | 10.40.233.201 |
| 230 | 10.40.233.202/31 | 10.40.233.202 – 10.40.233.203 | 10.40.233.203 |
| 231 | 10.40.233.204/31 | 10.40.233.204 – 10.40.233.205 | 10.40.233.205 |
| 232 | 10.40.233.206/31 | 10.40.233.206 – 10.40.233.207 | 10.40.233.207 |
| 233 | 10.40.233.208/31 | 10.40.233.208 – 10.40.233.209 | 10.40.233.209 |
| 234 | 10.40.233.210/31 | 10.40.233.210 – 10.40.233.211 | 10.40.233.211 |
| 235 | 10.40.233.212/31 | 10.40.233.212 – 10.40.233.213 | 10.40.233.213 |
| 236 | 10.40.233.214/31 | 10.40.233.214 – 10.40.233.215 | 10.40.233.215 |
| 237 | 10.40.233.216/31 | 10.40.233.216 – 10.40.233.217 | 10.40.233.217 |
| 238 | 10.40.233.218/31 | 10.40.233.218 – 10.40.233.219 | 10.40.233.219 |
| 239 | 10.40.233.220/31 | 10.40.233.220 – 10.40.233.221 | 10.40.233.221 |
| 240 | 10.40.233.222/31 | 10.40.233.222 – 10.40.233.223 | 10.40.233.223 |
| 241 | 10.40.233.224/31 | 10.40.233.224 – 10.40.233.225 | 10.40.233.225 |
| 242 | 10.40.233.226/31 | 10.40.233.226 – 10.40.233.227 | 10.40.233.227 |
| 243 | 10.40.233.228/31 | 10.40.233.228 – 10.40.233.229 | 10.40.233.229 |
| 244 | 10.40.233.230/31 | 10.40.233.230 – 10.40.233.231 | 10.40.233.231 |
| 245 | 10.40.233.232/31 | 10.40.233.232 – 10.40.233.233 | 10.40.233.233 |
| 246 | 10.40.233.234/31 | 10.40.233.234 – 10.40.233.235 | 10.40.233.235 |
| 247 | 10.40.233.236/31 | 10.40.233.236 – 10.40.233.237 | 10.40.233.237 |
| 248 | 10.40.233.238/31 | 10.40.233.238 – 10.40.233.239 | 10.40.233.239 |
| 249 | 10.40.233.240/31 | 10.40.233.240 – 10.40.233.241 | 10.40.233.241 |
| 250 | 10.40.233.242/31 | 10.40.233.242 – 10.40.233.243 | 10.40.233.243 |
| 251 | 10.40.233.244/31 | 10.40.233.244 – 10.40.233.245 | 10.40.233.245 |
| 252 | 10.40.233.246/31 | 10.40.233.246 – 10.40.233.247 | 10.40.233.247 |
| 253 | 10.40.233.248/31 | 10.40.233.248 – 10.40.233.249 | 10.40.233.249 |
| 254 | 10.40.233.250/31 | 10.40.233.250 – 10.40.233.251 | 10.40.233.251 |
| 255 | 10.40.233.252/31 | 10.40.233.252 – 10.40.233.253 | 10.40.233.253 |
| 256 | 10.40.233.254/31 | 10.40.233.254 – 10.40.233.255 | 10.40.233.255 |
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.