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)10.158.232.0/23
network10.158.232.0/23
broadcast10.158.233.255
first host10.158.232.1
last host10.158.233.254
subnet mask255.255.254.0
wildcard0.0.1.255
addresses512
usable hosts510
classA
ipcalc 10.158.232.0/23
address00001010.10011110.11101000.00000000
subnet mask11111111.11111111.11111110.00000000
network00001010.10011110.11101000.00000000
broadcast00001010.10011110.11101001.11111111
green = network part, grey = host part
hex0x0a9ee800
decimal178186240
reverse dns0.232.158.10.in-addr.arpa
ipv4-mapped::ffff:a9e:e800
/23 split into /30 · 128 subnets
close ×| # | network | host range | broadcast |
|---|---|---|---|
| 1 | 10.158.232.0/30 | 10.158.232.1 – 10.158.232.2 | 10.158.232.3 |
| 2 | 10.158.232.4/30 | 10.158.232.5 – 10.158.232.6 | 10.158.232.7 |
| 3 | 10.158.232.8/30 | 10.158.232.9 – 10.158.232.10 | 10.158.232.11 |
| 4 | 10.158.232.12/30 | 10.158.232.13 – 10.158.232.14 | 10.158.232.15 |
| 5 | 10.158.232.16/30 | 10.158.232.17 – 10.158.232.18 | 10.158.232.19 |
| 6 | 10.158.232.20/30 | 10.158.232.21 – 10.158.232.22 | 10.158.232.23 |
| 7 | 10.158.232.24/30 | 10.158.232.25 – 10.158.232.26 | 10.158.232.27 |
| 8 | 10.158.232.28/30 | 10.158.232.29 – 10.158.232.30 | 10.158.232.31 |
| 9 | 10.158.232.32/30 | 10.158.232.33 – 10.158.232.34 | 10.158.232.35 |
| 10 | 10.158.232.36/30 | 10.158.232.37 – 10.158.232.38 | 10.158.232.39 |
| 11 | 10.158.232.40/30 | 10.158.232.41 – 10.158.232.42 | 10.158.232.43 |
| 12 | 10.158.232.44/30 | 10.158.232.45 – 10.158.232.46 | 10.158.232.47 |
| 13 | 10.158.232.48/30 | 10.158.232.49 – 10.158.232.50 | 10.158.232.51 |
| 14 | 10.158.232.52/30 | 10.158.232.53 – 10.158.232.54 | 10.158.232.55 |
| 15 | 10.158.232.56/30 | 10.158.232.57 – 10.158.232.58 | 10.158.232.59 |
| 16 | 10.158.232.60/30 | 10.158.232.61 – 10.158.232.62 | 10.158.232.63 |
| 17 | 10.158.232.64/30 | 10.158.232.65 – 10.158.232.66 | 10.158.232.67 |
| 18 | 10.158.232.68/30 | 10.158.232.69 – 10.158.232.70 | 10.158.232.71 |
| 19 | 10.158.232.72/30 | 10.158.232.73 – 10.158.232.74 | 10.158.232.75 |
| 20 | 10.158.232.76/30 | 10.158.232.77 – 10.158.232.78 | 10.158.232.79 |
| 21 | 10.158.232.80/30 | 10.158.232.81 – 10.158.232.82 | 10.158.232.83 |
| 22 | 10.158.232.84/30 | 10.158.232.85 – 10.158.232.86 | 10.158.232.87 |
| 23 | 10.158.232.88/30 | 10.158.232.89 – 10.158.232.90 | 10.158.232.91 |
| 24 | 10.158.232.92/30 | 10.158.232.93 – 10.158.232.94 | 10.158.232.95 |
| 25 | 10.158.232.96/30 | 10.158.232.97 – 10.158.232.98 | 10.158.232.99 |
| 26 | 10.158.232.100/30 | 10.158.232.101 – 10.158.232.102 | 10.158.232.103 |
| 27 | 10.158.232.104/30 | 10.158.232.105 – 10.158.232.106 | 10.158.232.107 |
| 28 | 10.158.232.108/30 | 10.158.232.109 – 10.158.232.110 | 10.158.232.111 |
| 29 | 10.158.232.112/30 | 10.158.232.113 – 10.158.232.114 | 10.158.232.115 |
| 30 | 10.158.232.116/30 | 10.158.232.117 – 10.158.232.118 | 10.158.232.119 |
| 31 | 10.158.232.120/30 | 10.158.232.121 – 10.158.232.122 | 10.158.232.123 |
| 32 | 10.158.232.124/30 | 10.158.232.125 – 10.158.232.126 | 10.158.232.127 |
| 33 | 10.158.232.128/30 | 10.158.232.129 – 10.158.232.130 | 10.158.232.131 |
| 34 | 10.158.232.132/30 | 10.158.232.133 – 10.158.232.134 | 10.158.232.135 |
| 35 | 10.158.232.136/30 | 10.158.232.137 – 10.158.232.138 | 10.158.232.139 |
| 36 | 10.158.232.140/30 | 10.158.232.141 – 10.158.232.142 | 10.158.232.143 |
| 37 | 10.158.232.144/30 | 10.158.232.145 – 10.158.232.146 | 10.158.232.147 |
| 38 | 10.158.232.148/30 | 10.158.232.149 – 10.158.232.150 | 10.158.232.151 |
| 39 | 10.158.232.152/30 | 10.158.232.153 – 10.158.232.154 | 10.158.232.155 |
| 40 | 10.158.232.156/30 | 10.158.232.157 – 10.158.232.158 | 10.158.232.159 |
| 41 | 10.158.232.160/30 | 10.158.232.161 – 10.158.232.162 | 10.158.232.163 |
| 42 | 10.158.232.164/30 | 10.158.232.165 – 10.158.232.166 | 10.158.232.167 |
| 43 | 10.158.232.168/30 | 10.158.232.169 – 10.158.232.170 | 10.158.232.171 |
| 44 | 10.158.232.172/30 | 10.158.232.173 – 10.158.232.174 | 10.158.232.175 |
| 45 | 10.158.232.176/30 | 10.158.232.177 – 10.158.232.178 | 10.158.232.179 |
| 46 | 10.158.232.180/30 | 10.158.232.181 – 10.158.232.182 | 10.158.232.183 |
| 47 | 10.158.232.184/30 | 10.158.232.185 – 10.158.232.186 | 10.158.232.187 |
| 48 | 10.158.232.188/30 | 10.158.232.189 – 10.158.232.190 | 10.158.232.191 |
| 49 | 10.158.232.192/30 | 10.158.232.193 – 10.158.232.194 | 10.158.232.195 |
| 50 | 10.158.232.196/30 | 10.158.232.197 – 10.158.232.198 | 10.158.232.199 |
| 51 | 10.158.232.200/30 | 10.158.232.201 – 10.158.232.202 | 10.158.232.203 |
| 52 | 10.158.232.204/30 | 10.158.232.205 – 10.158.232.206 | 10.158.232.207 |
| 53 | 10.158.232.208/30 | 10.158.232.209 – 10.158.232.210 | 10.158.232.211 |
| 54 | 10.158.232.212/30 | 10.158.232.213 – 10.158.232.214 | 10.158.232.215 |
| 55 | 10.158.232.216/30 | 10.158.232.217 – 10.158.232.218 | 10.158.232.219 |
| 56 | 10.158.232.220/30 | 10.158.232.221 – 10.158.232.222 | 10.158.232.223 |
| 57 | 10.158.232.224/30 | 10.158.232.225 – 10.158.232.226 | 10.158.232.227 |
| 58 | 10.158.232.228/30 | 10.158.232.229 – 10.158.232.230 | 10.158.232.231 |
| 59 | 10.158.232.232/30 | 10.158.232.233 – 10.158.232.234 | 10.158.232.235 |
| 60 | 10.158.232.236/30 | 10.158.232.237 – 10.158.232.238 | 10.158.232.239 |
| 61 | 10.158.232.240/30 | 10.158.232.241 – 10.158.232.242 | 10.158.232.243 |
| 62 | 10.158.232.244/30 | 10.158.232.245 – 10.158.232.246 | 10.158.232.247 |
| 63 | 10.158.232.248/30 | 10.158.232.249 – 10.158.232.250 | 10.158.232.251 |
| 64 | 10.158.232.252/30 | 10.158.232.253 – 10.158.232.254 | 10.158.232.255 |
| 65 | 10.158.233.0/30 | 10.158.233.1 – 10.158.233.2 | 10.158.233.3 |
| 66 | 10.158.233.4/30 | 10.158.233.5 – 10.158.233.6 | 10.158.233.7 |
| 67 | 10.158.233.8/30 | 10.158.233.9 – 10.158.233.10 | 10.158.233.11 |
| 68 | 10.158.233.12/30 | 10.158.233.13 – 10.158.233.14 | 10.158.233.15 |
| 69 | 10.158.233.16/30 | 10.158.233.17 – 10.158.233.18 | 10.158.233.19 |
| 70 | 10.158.233.20/30 | 10.158.233.21 – 10.158.233.22 | 10.158.233.23 |
| 71 | 10.158.233.24/30 | 10.158.233.25 – 10.158.233.26 | 10.158.233.27 |
| 72 | 10.158.233.28/30 | 10.158.233.29 – 10.158.233.30 | 10.158.233.31 |
| 73 | 10.158.233.32/30 | 10.158.233.33 – 10.158.233.34 | 10.158.233.35 |
| 74 | 10.158.233.36/30 | 10.158.233.37 – 10.158.233.38 | 10.158.233.39 |
| 75 | 10.158.233.40/30 | 10.158.233.41 – 10.158.233.42 | 10.158.233.43 |
| 76 | 10.158.233.44/30 | 10.158.233.45 – 10.158.233.46 | 10.158.233.47 |
| 77 | 10.158.233.48/30 | 10.158.233.49 – 10.158.233.50 | 10.158.233.51 |
| 78 | 10.158.233.52/30 | 10.158.233.53 – 10.158.233.54 | 10.158.233.55 |
| 79 | 10.158.233.56/30 | 10.158.233.57 – 10.158.233.58 | 10.158.233.59 |
| 80 | 10.158.233.60/30 | 10.158.233.61 – 10.158.233.62 | 10.158.233.63 |
| 81 | 10.158.233.64/30 | 10.158.233.65 – 10.158.233.66 | 10.158.233.67 |
| 82 | 10.158.233.68/30 | 10.158.233.69 – 10.158.233.70 | 10.158.233.71 |
| 83 | 10.158.233.72/30 | 10.158.233.73 – 10.158.233.74 | 10.158.233.75 |
| 84 | 10.158.233.76/30 | 10.158.233.77 – 10.158.233.78 | 10.158.233.79 |
| 85 | 10.158.233.80/30 | 10.158.233.81 – 10.158.233.82 | 10.158.233.83 |
| 86 | 10.158.233.84/30 | 10.158.233.85 – 10.158.233.86 | 10.158.233.87 |
| 87 | 10.158.233.88/30 | 10.158.233.89 – 10.158.233.90 | 10.158.233.91 |
| 88 | 10.158.233.92/30 | 10.158.233.93 – 10.158.233.94 | 10.158.233.95 |
| 89 | 10.158.233.96/30 | 10.158.233.97 – 10.158.233.98 | 10.158.233.99 |
| 90 | 10.158.233.100/30 | 10.158.233.101 – 10.158.233.102 | 10.158.233.103 |
| 91 | 10.158.233.104/30 | 10.158.233.105 – 10.158.233.106 | 10.158.233.107 |
| 92 | 10.158.233.108/30 | 10.158.233.109 – 10.158.233.110 | 10.158.233.111 |
| 93 | 10.158.233.112/30 | 10.158.233.113 – 10.158.233.114 | 10.158.233.115 |
| 94 | 10.158.233.116/30 | 10.158.233.117 – 10.158.233.118 | 10.158.233.119 |
| 95 | 10.158.233.120/30 | 10.158.233.121 – 10.158.233.122 | 10.158.233.123 |
| 96 | 10.158.233.124/30 | 10.158.233.125 – 10.158.233.126 | 10.158.233.127 |
| 97 | 10.158.233.128/30 | 10.158.233.129 – 10.158.233.130 | 10.158.233.131 |
| 98 | 10.158.233.132/30 | 10.158.233.133 – 10.158.233.134 | 10.158.233.135 |
| 99 | 10.158.233.136/30 | 10.158.233.137 – 10.158.233.138 | 10.158.233.139 |
| 100 | 10.158.233.140/30 | 10.158.233.141 – 10.158.233.142 | 10.158.233.143 |
| 101 | 10.158.233.144/30 | 10.158.233.145 – 10.158.233.146 | 10.158.233.147 |
| 102 | 10.158.233.148/30 | 10.158.233.149 – 10.158.233.150 | 10.158.233.151 |
| 103 | 10.158.233.152/30 | 10.158.233.153 – 10.158.233.154 | 10.158.233.155 |
| 104 | 10.158.233.156/30 | 10.158.233.157 – 10.158.233.158 | 10.158.233.159 |
| 105 | 10.158.233.160/30 | 10.158.233.161 – 10.158.233.162 | 10.158.233.163 |
| 106 | 10.158.233.164/30 | 10.158.233.165 – 10.158.233.166 | 10.158.233.167 |
| 107 | 10.158.233.168/30 | 10.158.233.169 – 10.158.233.170 | 10.158.233.171 |
| 108 | 10.158.233.172/30 | 10.158.233.173 – 10.158.233.174 | 10.158.233.175 |
| 109 | 10.158.233.176/30 | 10.158.233.177 – 10.158.233.178 | 10.158.233.179 |
| 110 | 10.158.233.180/30 | 10.158.233.181 – 10.158.233.182 | 10.158.233.183 |
| 111 | 10.158.233.184/30 | 10.158.233.185 – 10.158.233.186 | 10.158.233.187 |
| 112 | 10.158.233.188/30 | 10.158.233.189 – 10.158.233.190 | 10.158.233.191 |
| 113 | 10.158.233.192/30 | 10.158.233.193 – 10.158.233.194 | 10.158.233.195 |
| 114 | 10.158.233.196/30 | 10.158.233.197 – 10.158.233.198 | 10.158.233.199 |
| 115 | 10.158.233.200/30 | 10.158.233.201 – 10.158.233.202 | 10.158.233.203 |
| 116 | 10.158.233.204/30 | 10.158.233.205 – 10.158.233.206 | 10.158.233.207 |
| 117 | 10.158.233.208/30 | 10.158.233.209 – 10.158.233.210 | 10.158.233.211 |
| 118 | 10.158.233.212/30 | 10.158.233.213 – 10.158.233.214 | 10.158.233.215 |
| 119 | 10.158.233.216/30 | 10.158.233.217 – 10.158.233.218 | 10.158.233.219 |
| 120 | 10.158.233.220/30 | 10.158.233.221 – 10.158.233.222 | 10.158.233.223 |
| 121 | 10.158.233.224/30 | 10.158.233.225 – 10.158.233.226 | 10.158.233.227 |
| 122 | 10.158.233.228/30 | 10.158.233.229 – 10.158.233.230 | 10.158.233.231 |
| 123 | 10.158.233.232/30 | 10.158.233.233 – 10.158.233.234 | 10.158.233.235 |
| 124 | 10.158.233.236/30 | 10.158.233.237 – 10.158.233.238 | 10.158.233.239 |
| 125 | 10.158.233.240/30 | 10.158.233.241 – 10.158.233.242 | 10.158.233.243 |
| 126 | 10.158.233.244/30 | 10.158.233.245 – 10.158.233.246 | 10.158.233.247 |
| 127 | 10.158.233.248/30 | 10.158.233.249 – 10.158.233.250 | 10.158.233.251 |
| 128 | 10.158.233.252/30 | 10.158.233.253 – 10.158.233.254 | 10.158.233.255 |
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.