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)10.232.16.0/23
network10.232.16.0/23
broadcast10.232.17.255
first host10.232.16.1
last host10.232.17.254
subnet mask255.255.254.0
wildcard0.0.1.255
addresses512
usable hosts510
classA
ipcalc 10.232.16.0/23
address00001010.11101000.00010000.00000000
subnet mask11111111.11111111.11111110.00000000
network00001010.11101000.00010000.00000000
broadcast00001010.11101000.00010001.11111111
green = network part, grey = host part
hex0x0ae81000
decimal182980608
reverse dns0.16.232.10.in-addr.arpa
ipv4-mapped::ffff:ae8:1000
/23 split into /30 · 128 subnets
close ×| # | network | host range | broadcast |
|---|---|---|---|
| 1 | 10.232.16.0/30 | 10.232.16.1 – 10.232.16.2 | 10.232.16.3 |
| 2 | 10.232.16.4/30 | 10.232.16.5 – 10.232.16.6 | 10.232.16.7 |
| 3 | 10.232.16.8/30 | 10.232.16.9 – 10.232.16.10 | 10.232.16.11 |
| 4 | 10.232.16.12/30 | 10.232.16.13 – 10.232.16.14 | 10.232.16.15 |
| 5 | 10.232.16.16/30 | 10.232.16.17 – 10.232.16.18 | 10.232.16.19 |
| 6 | 10.232.16.20/30 | 10.232.16.21 – 10.232.16.22 | 10.232.16.23 |
| 7 | 10.232.16.24/30 | 10.232.16.25 – 10.232.16.26 | 10.232.16.27 |
| 8 | 10.232.16.28/30 | 10.232.16.29 – 10.232.16.30 | 10.232.16.31 |
| 9 | 10.232.16.32/30 | 10.232.16.33 – 10.232.16.34 | 10.232.16.35 |
| 10 | 10.232.16.36/30 | 10.232.16.37 – 10.232.16.38 | 10.232.16.39 |
| 11 | 10.232.16.40/30 | 10.232.16.41 – 10.232.16.42 | 10.232.16.43 |
| 12 | 10.232.16.44/30 | 10.232.16.45 – 10.232.16.46 | 10.232.16.47 |
| 13 | 10.232.16.48/30 | 10.232.16.49 – 10.232.16.50 | 10.232.16.51 |
| 14 | 10.232.16.52/30 | 10.232.16.53 – 10.232.16.54 | 10.232.16.55 |
| 15 | 10.232.16.56/30 | 10.232.16.57 – 10.232.16.58 | 10.232.16.59 |
| 16 | 10.232.16.60/30 | 10.232.16.61 – 10.232.16.62 | 10.232.16.63 |
| 17 | 10.232.16.64/30 | 10.232.16.65 – 10.232.16.66 | 10.232.16.67 |
| 18 | 10.232.16.68/30 | 10.232.16.69 – 10.232.16.70 | 10.232.16.71 |
| 19 | 10.232.16.72/30 | 10.232.16.73 – 10.232.16.74 | 10.232.16.75 |
| 20 | 10.232.16.76/30 | 10.232.16.77 – 10.232.16.78 | 10.232.16.79 |
| 21 | 10.232.16.80/30 | 10.232.16.81 – 10.232.16.82 | 10.232.16.83 |
| 22 | 10.232.16.84/30 | 10.232.16.85 – 10.232.16.86 | 10.232.16.87 |
| 23 | 10.232.16.88/30 | 10.232.16.89 – 10.232.16.90 | 10.232.16.91 |
| 24 | 10.232.16.92/30 | 10.232.16.93 – 10.232.16.94 | 10.232.16.95 |
| 25 | 10.232.16.96/30 | 10.232.16.97 – 10.232.16.98 | 10.232.16.99 |
| 26 | 10.232.16.100/30 | 10.232.16.101 – 10.232.16.102 | 10.232.16.103 |
| 27 | 10.232.16.104/30 | 10.232.16.105 – 10.232.16.106 | 10.232.16.107 |
| 28 | 10.232.16.108/30 | 10.232.16.109 – 10.232.16.110 | 10.232.16.111 |
| 29 | 10.232.16.112/30 | 10.232.16.113 – 10.232.16.114 | 10.232.16.115 |
| 30 | 10.232.16.116/30 | 10.232.16.117 – 10.232.16.118 | 10.232.16.119 |
| 31 | 10.232.16.120/30 | 10.232.16.121 – 10.232.16.122 | 10.232.16.123 |
| 32 | 10.232.16.124/30 | 10.232.16.125 – 10.232.16.126 | 10.232.16.127 |
| 33 | 10.232.16.128/30 | 10.232.16.129 – 10.232.16.130 | 10.232.16.131 |
| 34 | 10.232.16.132/30 | 10.232.16.133 – 10.232.16.134 | 10.232.16.135 |
| 35 | 10.232.16.136/30 | 10.232.16.137 – 10.232.16.138 | 10.232.16.139 |
| 36 | 10.232.16.140/30 | 10.232.16.141 – 10.232.16.142 | 10.232.16.143 |
| 37 | 10.232.16.144/30 | 10.232.16.145 – 10.232.16.146 | 10.232.16.147 |
| 38 | 10.232.16.148/30 | 10.232.16.149 – 10.232.16.150 | 10.232.16.151 |
| 39 | 10.232.16.152/30 | 10.232.16.153 – 10.232.16.154 | 10.232.16.155 |
| 40 | 10.232.16.156/30 | 10.232.16.157 – 10.232.16.158 | 10.232.16.159 |
| 41 | 10.232.16.160/30 | 10.232.16.161 – 10.232.16.162 | 10.232.16.163 |
| 42 | 10.232.16.164/30 | 10.232.16.165 – 10.232.16.166 | 10.232.16.167 |
| 43 | 10.232.16.168/30 | 10.232.16.169 – 10.232.16.170 | 10.232.16.171 |
| 44 | 10.232.16.172/30 | 10.232.16.173 – 10.232.16.174 | 10.232.16.175 |
| 45 | 10.232.16.176/30 | 10.232.16.177 – 10.232.16.178 | 10.232.16.179 |
| 46 | 10.232.16.180/30 | 10.232.16.181 – 10.232.16.182 | 10.232.16.183 |
| 47 | 10.232.16.184/30 | 10.232.16.185 – 10.232.16.186 | 10.232.16.187 |
| 48 | 10.232.16.188/30 | 10.232.16.189 – 10.232.16.190 | 10.232.16.191 |
| 49 | 10.232.16.192/30 | 10.232.16.193 – 10.232.16.194 | 10.232.16.195 |
| 50 | 10.232.16.196/30 | 10.232.16.197 – 10.232.16.198 | 10.232.16.199 |
| 51 | 10.232.16.200/30 | 10.232.16.201 – 10.232.16.202 | 10.232.16.203 |
| 52 | 10.232.16.204/30 | 10.232.16.205 – 10.232.16.206 | 10.232.16.207 |
| 53 | 10.232.16.208/30 | 10.232.16.209 – 10.232.16.210 | 10.232.16.211 |
| 54 | 10.232.16.212/30 | 10.232.16.213 – 10.232.16.214 | 10.232.16.215 |
| 55 | 10.232.16.216/30 | 10.232.16.217 – 10.232.16.218 | 10.232.16.219 |
| 56 | 10.232.16.220/30 | 10.232.16.221 – 10.232.16.222 | 10.232.16.223 |
| 57 | 10.232.16.224/30 | 10.232.16.225 – 10.232.16.226 | 10.232.16.227 |
| 58 | 10.232.16.228/30 | 10.232.16.229 – 10.232.16.230 | 10.232.16.231 |
| 59 | 10.232.16.232/30 | 10.232.16.233 – 10.232.16.234 | 10.232.16.235 |
| 60 | 10.232.16.236/30 | 10.232.16.237 – 10.232.16.238 | 10.232.16.239 |
| 61 | 10.232.16.240/30 | 10.232.16.241 – 10.232.16.242 | 10.232.16.243 |
| 62 | 10.232.16.244/30 | 10.232.16.245 – 10.232.16.246 | 10.232.16.247 |
| 63 | 10.232.16.248/30 | 10.232.16.249 – 10.232.16.250 | 10.232.16.251 |
| 64 | 10.232.16.252/30 | 10.232.16.253 – 10.232.16.254 | 10.232.16.255 |
| 65 | 10.232.17.0/30 | 10.232.17.1 – 10.232.17.2 | 10.232.17.3 |
| 66 | 10.232.17.4/30 | 10.232.17.5 – 10.232.17.6 | 10.232.17.7 |
| 67 | 10.232.17.8/30 | 10.232.17.9 – 10.232.17.10 | 10.232.17.11 |
| 68 | 10.232.17.12/30 | 10.232.17.13 – 10.232.17.14 | 10.232.17.15 |
| 69 | 10.232.17.16/30 | 10.232.17.17 – 10.232.17.18 | 10.232.17.19 |
| 70 | 10.232.17.20/30 | 10.232.17.21 – 10.232.17.22 | 10.232.17.23 |
| 71 | 10.232.17.24/30 | 10.232.17.25 – 10.232.17.26 | 10.232.17.27 |
| 72 | 10.232.17.28/30 | 10.232.17.29 – 10.232.17.30 | 10.232.17.31 |
| 73 | 10.232.17.32/30 | 10.232.17.33 – 10.232.17.34 | 10.232.17.35 |
| 74 | 10.232.17.36/30 | 10.232.17.37 – 10.232.17.38 | 10.232.17.39 |
| 75 | 10.232.17.40/30 | 10.232.17.41 – 10.232.17.42 | 10.232.17.43 |
| 76 | 10.232.17.44/30 | 10.232.17.45 – 10.232.17.46 | 10.232.17.47 |
| 77 | 10.232.17.48/30 | 10.232.17.49 – 10.232.17.50 | 10.232.17.51 |
| 78 | 10.232.17.52/30 | 10.232.17.53 – 10.232.17.54 | 10.232.17.55 |
| 79 | 10.232.17.56/30 | 10.232.17.57 – 10.232.17.58 | 10.232.17.59 |
| 80 | 10.232.17.60/30 | 10.232.17.61 – 10.232.17.62 | 10.232.17.63 |
| 81 | 10.232.17.64/30 | 10.232.17.65 – 10.232.17.66 | 10.232.17.67 |
| 82 | 10.232.17.68/30 | 10.232.17.69 – 10.232.17.70 | 10.232.17.71 |
| 83 | 10.232.17.72/30 | 10.232.17.73 – 10.232.17.74 | 10.232.17.75 |
| 84 | 10.232.17.76/30 | 10.232.17.77 – 10.232.17.78 | 10.232.17.79 |
| 85 | 10.232.17.80/30 | 10.232.17.81 – 10.232.17.82 | 10.232.17.83 |
| 86 | 10.232.17.84/30 | 10.232.17.85 – 10.232.17.86 | 10.232.17.87 |
| 87 | 10.232.17.88/30 | 10.232.17.89 – 10.232.17.90 | 10.232.17.91 |
| 88 | 10.232.17.92/30 | 10.232.17.93 – 10.232.17.94 | 10.232.17.95 |
| 89 | 10.232.17.96/30 | 10.232.17.97 – 10.232.17.98 | 10.232.17.99 |
| 90 | 10.232.17.100/30 | 10.232.17.101 – 10.232.17.102 | 10.232.17.103 |
| 91 | 10.232.17.104/30 | 10.232.17.105 – 10.232.17.106 | 10.232.17.107 |
| 92 | 10.232.17.108/30 | 10.232.17.109 – 10.232.17.110 | 10.232.17.111 |
| 93 | 10.232.17.112/30 | 10.232.17.113 – 10.232.17.114 | 10.232.17.115 |
| 94 | 10.232.17.116/30 | 10.232.17.117 – 10.232.17.118 | 10.232.17.119 |
| 95 | 10.232.17.120/30 | 10.232.17.121 – 10.232.17.122 | 10.232.17.123 |
| 96 | 10.232.17.124/30 | 10.232.17.125 – 10.232.17.126 | 10.232.17.127 |
| 97 | 10.232.17.128/30 | 10.232.17.129 – 10.232.17.130 | 10.232.17.131 |
| 98 | 10.232.17.132/30 | 10.232.17.133 – 10.232.17.134 | 10.232.17.135 |
| 99 | 10.232.17.136/30 | 10.232.17.137 – 10.232.17.138 | 10.232.17.139 |
| 100 | 10.232.17.140/30 | 10.232.17.141 – 10.232.17.142 | 10.232.17.143 |
| 101 | 10.232.17.144/30 | 10.232.17.145 – 10.232.17.146 | 10.232.17.147 |
| 102 | 10.232.17.148/30 | 10.232.17.149 – 10.232.17.150 | 10.232.17.151 |
| 103 | 10.232.17.152/30 | 10.232.17.153 – 10.232.17.154 | 10.232.17.155 |
| 104 | 10.232.17.156/30 | 10.232.17.157 – 10.232.17.158 | 10.232.17.159 |
| 105 | 10.232.17.160/30 | 10.232.17.161 – 10.232.17.162 | 10.232.17.163 |
| 106 | 10.232.17.164/30 | 10.232.17.165 – 10.232.17.166 | 10.232.17.167 |
| 107 | 10.232.17.168/30 | 10.232.17.169 – 10.232.17.170 | 10.232.17.171 |
| 108 | 10.232.17.172/30 | 10.232.17.173 – 10.232.17.174 | 10.232.17.175 |
| 109 | 10.232.17.176/30 | 10.232.17.177 – 10.232.17.178 | 10.232.17.179 |
| 110 | 10.232.17.180/30 | 10.232.17.181 – 10.232.17.182 | 10.232.17.183 |
| 111 | 10.232.17.184/30 | 10.232.17.185 – 10.232.17.186 | 10.232.17.187 |
| 112 | 10.232.17.188/30 | 10.232.17.189 – 10.232.17.190 | 10.232.17.191 |
| 113 | 10.232.17.192/30 | 10.232.17.193 – 10.232.17.194 | 10.232.17.195 |
| 114 | 10.232.17.196/30 | 10.232.17.197 – 10.232.17.198 | 10.232.17.199 |
| 115 | 10.232.17.200/30 | 10.232.17.201 – 10.232.17.202 | 10.232.17.203 |
| 116 | 10.232.17.204/30 | 10.232.17.205 – 10.232.17.206 | 10.232.17.207 |
| 117 | 10.232.17.208/30 | 10.232.17.209 – 10.232.17.210 | 10.232.17.211 |
| 118 | 10.232.17.212/30 | 10.232.17.213 – 10.232.17.214 | 10.232.17.215 |
| 119 | 10.232.17.216/30 | 10.232.17.217 – 10.232.17.218 | 10.232.17.219 |
| 120 | 10.232.17.220/30 | 10.232.17.221 – 10.232.17.222 | 10.232.17.223 |
| 121 | 10.232.17.224/30 | 10.232.17.225 – 10.232.17.226 | 10.232.17.227 |
| 122 | 10.232.17.228/30 | 10.232.17.229 – 10.232.17.230 | 10.232.17.231 |
| 123 | 10.232.17.232/30 | 10.232.17.233 – 10.232.17.234 | 10.232.17.235 |
| 124 | 10.232.17.236/30 | 10.232.17.237 – 10.232.17.238 | 10.232.17.239 |
| 125 | 10.232.17.240/30 | 10.232.17.241 – 10.232.17.242 | 10.232.17.243 |
| 126 | 10.232.17.244/30 | 10.232.17.245 – 10.232.17.246 | 10.232.17.247 |
| 127 | 10.232.17.248/30 | 10.232.17.249 – 10.232.17.250 | 10.232.17.251 |
| 128 | 10.232.17.252/30 | 10.232.17.253 – 10.232.17.254 | 10.232.17.255 |
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.