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)10.232.30.0/23
network10.232.30.0/23
broadcast10.232.31.255
first host10.232.30.1
last host10.232.31.254
subnet mask255.255.254.0
wildcard0.0.1.255
addresses512
usable hosts510
classA
ipcalc 10.232.30.0/23
address00001010.11101000.00011110.00000000
subnet mask11111111.11111111.11111110.00000000
network00001010.11101000.00011110.00000000
broadcast00001010.11101000.00011111.11111111
green = network part, grey = host part
hex0x0ae81e00
decimal182984192
reverse dns0.30.232.10.in-addr.arpa
ipv4-mapped::ffff:ae8:1e00
/23 split into /30 · 128 subnets
close ×| # | network | host range | broadcast |
|---|---|---|---|
| 1 | 10.232.30.0/30 | 10.232.30.1 – 10.232.30.2 | 10.232.30.3 |
| 2 | 10.232.30.4/30 | 10.232.30.5 – 10.232.30.6 | 10.232.30.7 |
| 3 | 10.232.30.8/30 | 10.232.30.9 – 10.232.30.10 | 10.232.30.11 |
| 4 | 10.232.30.12/30 | 10.232.30.13 – 10.232.30.14 | 10.232.30.15 |
| 5 | 10.232.30.16/30 | 10.232.30.17 – 10.232.30.18 | 10.232.30.19 |
| 6 | 10.232.30.20/30 | 10.232.30.21 – 10.232.30.22 | 10.232.30.23 |
| 7 | 10.232.30.24/30 | 10.232.30.25 – 10.232.30.26 | 10.232.30.27 |
| 8 | 10.232.30.28/30 | 10.232.30.29 – 10.232.30.30 | 10.232.30.31 |
| 9 | 10.232.30.32/30 | 10.232.30.33 – 10.232.30.34 | 10.232.30.35 |
| 10 | 10.232.30.36/30 | 10.232.30.37 – 10.232.30.38 | 10.232.30.39 |
| 11 | 10.232.30.40/30 | 10.232.30.41 – 10.232.30.42 | 10.232.30.43 |
| 12 | 10.232.30.44/30 | 10.232.30.45 – 10.232.30.46 | 10.232.30.47 |
| 13 | 10.232.30.48/30 | 10.232.30.49 – 10.232.30.50 | 10.232.30.51 |
| 14 | 10.232.30.52/30 | 10.232.30.53 – 10.232.30.54 | 10.232.30.55 |
| 15 | 10.232.30.56/30 | 10.232.30.57 – 10.232.30.58 | 10.232.30.59 |
| 16 | 10.232.30.60/30 | 10.232.30.61 – 10.232.30.62 | 10.232.30.63 |
| 17 | 10.232.30.64/30 | 10.232.30.65 – 10.232.30.66 | 10.232.30.67 |
| 18 | 10.232.30.68/30 | 10.232.30.69 – 10.232.30.70 | 10.232.30.71 |
| 19 | 10.232.30.72/30 | 10.232.30.73 – 10.232.30.74 | 10.232.30.75 |
| 20 | 10.232.30.76/30 | 10.232.30.77 – 10.232.30.78 | 10.232.30.79 |
| 21 | 10.232.30.80/30 | 10.232.30.81 – 10.232.30.82 | 10.232.30.83 |
| 22 | 10.232.30.84/30 | 10.232.30.85 – 10.232.30.86 | 10.232.30.87 |
| 23 | 10.232.30.88/30 | 10.232.30.89 – 10.232.30.90 | 10.232.30.91 |
| 24 | 10.232.30.92/30 | 10.232.30.93 – 10.232.30.94 | 10.232.30.95 |
| 25 | 10.232.30.96/30 | 10.232.30.97 – 10.232.30.98 | 10.232.30.99 |
| 26 | 10.232.30.100/30 | 10.232.30.101 – 10.232.30.102 | 10.232.30.103 |
| 27 | 10.232.30.104/30 | 10.232.30.105 – 10.232.30.106 | 10.232.30.107 |
| 28 | 10.232.30.108/30 | 10.232.30.109 – 10.232.30.110 | 10.232.30.111 |
| 29 | 10.232.30.112/30 | 10.232.30.113 – 10.232.30.114 | 10.232.30.115 |
| 30 | 10.232.30.116/30 | 10.232.30.117 – 10.232.30.118 | 10.232.30.119 |
| 31 | 10.232.30.120/30 | 10.232.30.121 – 10.232.30.122 | 10.232.30.123 |
| 32 | 10.232.30.124/30 | 10.232.30.125 – 10.232.30.126 | 10.232.30.127 |
| 33 | 10.232.30.128/30 | 10.232.30.129 – 10.232.30.130 | 10.232.30.131 |
| 34 | 10.232.30.132/30 | 10.232.30.133 – 10.232.30.134 | 10.232.30.135 |
| 35 | 10.232.30.136/30 | 10.232.30.137 – 10.232.30.138 | 10.232.30.139 |
| 36 | 10.232.30.140/30 | 10.232.30.141 – 10.232.30.142 | 10.232.30.143 |
| 37 | 10.232.30.144/30 | 10.232.30.145 – 10.232.30.146 | 10.232.30.147 |
| 38 | 10.232.30.148/30 | 10.232.30.149 – 10.232.30.150 | 10.232.30.151 |
| 39 | 10.232.30.152/30 | 10.232.30.153 – 10.232.30.154 | 10.232.30.155 |
| 40 | 10.232.30.156/30 | 10.232.30.157 – 10.232.30.158 | 10.232.30.159 |
| 41 | 10.232.30.160/30 | 10.232.30.161 – 10.232.30.162 | 10.232.30.163 |
| 42 | 10.232.30.164/30 | 10.232.30.165 – 10.232.30.166 | 10.232.30.167 |
| 43 | 10.232.30.168/30 | 10.232.30.169 – 10.232.30.170 | 10.232.30.171 |
| 44 | 10.232.30.172/30 | 10.232.30.173 – 10.232.30.174 | 10.232.30.175 |
| 45 | 10.232.30.176/30 | 10.232.30.177 – 10.232.30.178 | 10.232.30.179 |
| 46 | 10.232.30.180/30 | 10.232.30.181 – 10.232.30.182 | 10.232.30.183 |
| 47 | 10.232.30.184/30 | 10.232.30.185 – 10.232.30.186 | 10.232.30.187 |
| 48 | 10.232.30.188/30 | 10.232.30.189 – 10.232.30.190 | 10.232.30.191 |
| 49 | 10.232.30.192/30 | 10.232.30.193 – 10.232.30.194 | 10.232.30.195 |
| 50 | 10.232.30.196/30 | 10.232.30.197 – 10.232.30.198 | 10.232.30.199 |
| 51 | 10.232.30.200/30 | 10.232.30.201 – 10.232.30.202 | 10.232.30.203 |
| 52 | 10.232.30.204/30 | 10.232.30.205 – 10.232.30.206 | 10.232.30.207 |
| 53 | 10.232.30.208/30 | 10.232.30.209 – 10.232.30.210 | 10.232.30.211 |
| 54 | 10.232.30.212/30 | 10.232.30.213 – 10.232.30.214 | 10.232.30.215 |
| 55 | 10.232.30.216/30 | 10.232.30.217 – 10.232.30.218 | 10.232.30.219 |
| 56 | 10.232.30.220/30 | 10.232.30.221 – 10.232.30.222 | 10.232.30.223 |
| 57 | 10.232.30.224/30 | 10.232.30.225 – 10.232.30.226 | 10.232.30.227 |
| 58 | 10.232.30.228/30 | 10.232.30.229 – 10.232.30.230 | 10.232.30.231 |
| 59 | 10.232.30.232/30 | 10.232.30.233 – 10.232.30.234 | 10.232.30.235 |
| 60 | 10.232.30.236/30 | 10.232.30.237 – 10.232.30.238 | 10.232.30.239 |
| 61 | 10.232.30.240/30 | 10.232.30.241 – 10.232.30.242 | 10.232.30.243 |
| 62 | 10.232.30.244/30 | 10.232.30.245 – 10.232.30.246 | 10.232.30.247 |
| 63 | 10.232.30.248/30 | 10.232.30.249 – 10.232.30.250 | 10.232.30.251 |
| 64 | 10.232.30.252/30 | 10.232.30.253 – 10.232.30.254 | 10.232.30.255 |
| 65 | 10.232.31.0/30 | 10.232.31.1 – 10.232.31.2 | 10.232.31.3 |
| 66 | 10.232.31.4/30 | 10.232.31.5 – 10.232.31.6 | 10.232.31.7 |
| 67 | 10.232.31.8/30 | 10.232.31.9 – 10.232.31.10 | 10.232.31.11 |
| 68 | 10.232.31.12/30 | 10.232.31.13 – 10.232.31.14 | 10.232.31.15 |
| 69 | 10.232.31.16/30 | 10.232.31.17 – 10.232.31.18 | 10.232.31.19 |
| 70 | 10.232.31.20/30 | 10.232.31.21 – 10.232.31.22 | 10.232.31.23 |
| 71 | 10.232.31.24/30 | 10.232.31.25 – 10.232.31.26 | 10.232.31.27 |
| 72 | 10.232.31.28/30 | 10.232.31.29 – 10.232.31.30 | 10.232.31.31 |
| 73 | 10.232.31.32/30 | 10.232.31.33 – 10.232.31.34 | 10.232.31.35 |
| 74 | 10.232.31.36/30 | 10.232.31.37 – 10.232.31.38 | 10.232.31.39 |
| 75 | 10.232.31.40/30 | 10.232.31.41 – 10.232.31.42 | 10.232.31.43 |
| 76 | 10.232.31.44/30 | 10.232.31.45 – 10.232.31.46 | 10.232.31.47 |
| 77 | 10.232.31.48/30 | 10.232.31.49 – 10.232.31.50 | 10.232.31.51 |
| 78 | 10.232.31.52/30 | 10.232.31.53 – 10.232.31.54 | 10.232.31.55 |
| 79 | 10.232.31.56/30 | 10.232.31.57 – 10.232.31.58 | 10.232.31.59 |
| 80 | 10.232.31.60/30 | 10.232.31.61 – 10.232.31.62 | 10.232.31.63 |
| 81 | 10.232.31.64/30 | 10.232.31.65 – 10.232.31.66 | 10.232.31.67 |
| 82 | 10.232.31.68/30 | 10.232.31.69 – 10.232.31.70 | 10.232.31.71 |
| 83 | 10.232.31.72/30 | 10.232.31.73 – 10.232.31.74 | 10.232.31.75 |
| 84 | 10.232.31.76/30 | 10.232.31.77 – 10.232.31.78 | 10.232.31.79 |
| 85 | 10.232.31.80/30 | 10.232.31.81 – 10.232.31.82 | 10.232.31.83 |
| 86 | 10.232.31.84/30 | 10.232.31.85 – 10.232.31.86 | 10.232.31.87 |
| 87 | 10.232.31.88/30 | 10.232.31.89 – 10.232.31.90 | 10.232.31.91 |
| 88 | 10.232.31.92/30 | 10.232.31.93 – 10.232.31.94 | 10.232.31.95 |
| 89 | 10.232.31.96/30 | 10.232.31.97 – 10.232.31.98 | 10.232.31.99 |
| 90 | 10.232.31.100/30 | 10.232.31.101 – 10.232.31.102 | 10.232.31.103 |
| 91 | 10.232.31.104/30 | 10.232.31.105 – 10.232.31.106 | 10.232.31.107 |
| 92 | 10.232.31.108/30 | 10.232.31.109 – 10.232.31.110 | 10.232.31.111 |
| 93 | 10.232.31.112/30 | 10.232.31.113 – 10.232.31.114 | 10.232.31.115 |
| 94 | 10.232.31.116/30 | 10.232.31.117 – 10.232.31.118 | 10.232.31.119 |
| 95 | 10.232.31.120/30 | 10.232.31.121 – 10.232.31.122 | 10.232.31.123 |
| 96 | 10.232.31.124/30 | 10.232.31.125 – 10.232.31.126 | 10.232.31.127 |
| 97 | 10.232.31.128/30 | 10.232.31.129 – 10.232.31.130 | 10.232.31.131 |
| 98 | 10.232.31.132/30 | 10.232.31.133 – 10.232.31.134 | 10.232.31.135 |
| 99 | 10.232.31.136/30 | 10.232.31.137 – 10.232.31.138 | 10.232.31.139 |
| 100 | 10.232.31.140/30 | 10.232.31.141 – 10.232.31.142 | 10.232.31.143 |
| 101 | 10.232.31.144/30 | 10.232.31.145 – 10.232.31.146 | 10.232.31.147 |
| 102 | 10.232.31.148/30 | 10.232.31.149 – 10.232.31.150 | 10.232.31.151 |
| 103 | 10.232.31.152/30 | 10.232.31.153 – 10.232.31.154 | 10.232.31.155 |
| 104 | 10.232.31.156/30 | 10.232.31.157 – 10.232.31.158 | 10.232.31.159 |
| 105 | 10.232.31.160/30 | 10.232.31.161 – 10.232.31.162 | 10.232.31.163 |
| 106 | 10.232.31.164/30 | 10.232.31.165 – 10.232.31.166 | 10.232.31.167 |
| 107 | 10.232.31.168/30 | 10.232.31.169 – 10.232.31.170 | 10.232.31.171 |
| 108 | 10.232.31.172/30 | 10.232.31.173 – 10.232.31.174 | 10.232.31.175 |
| 109 | 10.232.31.176/30 | 10.232.31.177 – 10.232.31.178 | 10.232.31.179 |
| 110 | 10.232.31.180/30 | 10.232.31.181 – 10.232.31.182 | 10.232.31.183 |
| 111 | 10.232.31.184/30 | 10.232.31.185 – 10.232.31.186 | 10.232.31.187 |
| 112 | 10.232.31.188/30 | 10.232.31.189 – 10.232.31.190 | 10.232.31.191 |
| 113 | 10.232.31.192/30 | 10.232.31.193 – 10.232.31.194 | 10.232.31.195 |
| 114 | 10.232.31.196/30 | 10.232.31.197 – 10.232.31.198 | 10.232.31.199 |
| 115 | 10.232.31.200/30 | 10.232.31.201 – 10.232.31.202 | 10.232.31.203 |
| 116 | 10.232.31.204/30 | 10.232.31.205 – 10.232.31.206 | 10.232.31.207 |
| 117 | 10.232.31.208/30 | 10.232.31.209 – 10.232.31.210 | 10.232.31.211 |
| 118 | 10.232.31.212/30 | 10.232.31.213 – 10.232.31.214 | 10.232.31.215 |
| 119 | 10.232.31.216/30 | 10.232.31.217 – 10.232.31.218 | 10.232.31.219 |
| 120 | 10.232.31.220/30 | 10.232.31.221 – 10.232.31.222 | 10.232.31.223 |
| 121 | 10.232.31.224/30 | 10.232.31.225 – 10.232.31.226 | 10.232.31.227 |
| 122 | 10.232.31.228/30 | 10.232.31.229 – 10.232.31.230 | 10.232.31.231 |
| 123 | 10.232.31.232/30 | 10.232.31.233 – 10.232.31.234 | 10.232.31.235 |
| 124 | 10.232.31.236/30 | 10.232.31.237 – 10.232.31.238 | 10.232.31.239 |
| 125 | 10.232.31.240/30 | 10.232.31.241 – 10.232.31.242 | 10.232.31.243 |
| 126 | 10.232.31.244/30 | 10.232.31.245 – 10.232.31.246 | 10.232.31.247 |
| 127 | 10.232.31.248/30 | 10.232.31.249 – 10.232.31.250 | 10.232.31.251 |
| 128 | 10.232.31.252/30 | 10.232.31.253 – 10.232.31.254 | 10.232.31.255 |
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.