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)10.167.212.0/23
network10.167.212.0/23
broadcast10.167.213.255
first host10.167.212.1
last host10.167.213.254
subnet mask255.255.254.0
wildcard0.0.1.255
addresses512
usable hosts510
classA
ipcalc 10.167.212.0/23
address00001010.10100111.11010100.00000000
subnet mask11111111.11111111.11111110.00000000
network00001010.10100111.11010100.00000000
broadcast00001010.10100111.11010101.11111111
green = network part, grey = host part
hex0x0aa7d400
decimal178770944
reverse dns0.212.167.10.in-addr.arpa
ipv4-mapped::ffff:aa7:d400
/23 split into /30 · 128 subnets
close ×| # | network | host range | broadcast |
|---|---|---|---|
| 1 | 10.167.212.0/30 | 10.167.212.1 – 10.167.212.2 | 10.167.212.3 |
| 2 | 10.167.212.4/30 | 10.167.212.5 – 10.167.212.6 | 10.167.212.7 |
| 3 | 10.167.212.8/30 | 10.167.212.9 – 10.167.212.10 | 10.167.212.11 |
| 4 | 10.167.212.12/30 | 10.167.212.13 – 10.167.212.14 | 10.167.212.15 |
| 5 | 10.167.212.16/30 | 10.167.212.17 – 10.167.212.18 | 10.167.212.19 |
| 6 | 10.167.212.20/30 | 10.167.212.21 – 10.167.212.22 | 10.167.212.23 |
| 7 | 10.167.212.24/30 | 10.167.212.25 – 10.167.212.26 | 10.167.212.27 |
| 8 | 10.167.212.28/30 | 10.167.212.29 – 10.167.212.30 | 10.167.212.31 |
| 9 | 10.167.212.32/30 | 10.167.212.33 – 10.167.212.34 | 10.167.212.35 |
| 10 | 10.167.212.36/30 | 10.167.212.37 – 10.167.212.38 | 10.167.212.39 |
| 11 | 10.167.212.40/30 | 10.167.212.41 – 10.167.212.42 | 10.167.212.43 |
| 12 | 10.167.212.44/30 | 10.167.212.45 – 10.167.212.46 | 10.167.212.47 |
| 13 | 10.167.212.48/30 | 10.167.212.49 – 10.167.212.50 | 10.167.212.51 |
| 14 | 10.167.212.52/30 | 10.167.212.53 – 10.167.212.54 | 10.167.212.55 |
| 15 | 10.167.212.56/30 | 10.167.212.57 – 10.167.212.58 | 10.167.212.59 |
| 16 | 10.167.212.60/30 | 10.167.212.61 – 10.167.212.62 | 10.167.212.63 |
| 17 | 10.167.212.64/30 | 10.167.212.65 – 10.167.212.66 | 10.167.212.67 |
| 18 | 10.167.212.68/30 | 10.167.212.69 – 10.167.212.70 | 10.167.212.71 |
| 19 | 10.167.212.72/30 | 10.167.212.73 – 10.167.212.74 | 10.167.212.75 |
| 20 | 10.167.212.76/30 | 10.167.212.77 – 10.167.212.78 | 10.167.212.79 |
| 21 | 10.167.212.80/30 | 10.167.212.81 – 10.167.212.82 | 10.167.212.83 |
| 22 | 10.167.212.84/30 | 10.167.212.85 – 10.167.212.86 | 10.167.212.87 |
| 23 | 10.167.212.88/30 | 10.167.212.89 – 10.167.212.90 | 10.167.212.91 |
| 24 | 10.167.212.92/30 | 10.167.212.93 – 10.167.212.94 | 10.167.212.95 |
| 25 | 10.167.212.96/30 | 10.167.212.97 – 10.167.212.98 | 10.167.212.99 |
| 26 | 10.167.212.100/30 | 10.167.212.101 – 10.167.212.102 | 10.167.212.103 |
| 27 | 10.167.212.104/30 | 10.167.212.105 – 10.167.212.106 | 10.167.212.107 |
| 28 | 10.167.212.108/30 | 10.167.212.109 – 10.167.212.110 | 10.167.212.111 |
| 29 | 10.167.212.112/30 | 10.167.212.113 – 10.167.212.114 | 10.167.212.115 |
| 30 | 10.167.212.116/30 | 10.167.212.117 – 10.167.212.118 | 10.167.212.119 |
| 31 | 10.167.212.120/30 | 10.167.212.121 – 10.167.212.122 | 10.167.212.123 |
| 32 | 10.167.212.124/30 | 10.167.212.125 – 10.167.212.126 | 10.167.212.127 |
| 33 | 10.167.212.128/30 | 10.167.212.129 – 10.167.212.130 | 10.167.212.131 |
| 34 | 10.167.212.132/30 | 10.167.212.133 – 10.167.212.134 | 10.167.212.135 |
| 35 | 10.167.212.136/30 | 10.167.212.137 – 10.167.212.138 | 10.167.212.139 |
| 36 | 10.167.212.140/30 | 10.167.212.141 – 10.167.212.142 | 10.167.212.143 |
| 37 | 10.167.212.144/30 | 10.167.212.145 – 10.167.212.146 | 10.167.212.147 |
| 38 | 10.167.212.148/30 | 10.167.212.149 – 10.167.212.150 | 10.167.212.151 |
| 39 | 10.167.212.152/30 | 10.167.212.153 – 10.167.212.154 | 10.167.212.155 |
| 40 | 10.167.212.156/30 | 10.167.212.157 – 10.167.212.158 | 10.167.212.159 |
| 41 | 10.167.212.160/30 | 10.167.212.161 – 10.167.212.162 | 10.167.212.163 |
| 42 | 10.167.212.164/30 | 10.167.212.165 – 10.167.212.166 | 10.167.212.167 |
| 43 | 10.167.212.168/30 | 10.167.212.169 – 10.167.212.170 | 10.167.212.171 |
| 44 | 10.167.212.172/30 | 10.167.212.173 – 10.167.212.174 | 10.167.212.175 |
| 45 | 10.167.212.176/30 | 10.167.212.177 – 10.167.212.178 | 10.167.212.179 |
| 46 | 10.167.212.180/30 | 10.167.212.181 – 10.167.212.182 | 10.167.212.183 |
| 47 | 10.167.212.184/30 | 10.167.212.185 – 10.167.212.186 | 10.167.212.187 |
| 48 | 10.167.212.188/30 | 10.167.212.189 – 10.167.212.190 | 10.167.212.191 |
| 49 | 10.167.212.192/30 | 10.167.212.193 – 10.167.212.194 | 10.167.212.195 |
| 50 | 10.167.212.196/30 | 10.167.212.197 – 10.167.212.198 | 10.167.212.199 |
| 51 | 10.167.212.200/30 | 10.167.212.201 – 10.167.212.202 | 10.167.212.203 |
| 52 | 10.167.212.204/30 | 10.167.212.205 – 10.167.212.206 | 10.167.212.207 |
| 53 | 10.167.212.208/30 | 10.167.212.209 – 10.167.212.210 | 10.167.212.211 |
| 54 | 10.167.212.212/30 | 10.167.212.213 – 10.167.212.214 | 10.167.212.215 |
| 55 | 10.167.212.216/30 | 10.167.212.217 – 10.167.212.218 | 10.167.212.219 |
| 56 | 10.167.212.220/30 | 10.167.212.221 – 10.167.212.222 | 10.167.212.223 |
| 57 | 10.167.212.224/30 | 10.167.212.225 – 10.167.212.226 | 10.167.212.227 |
| 58 | 10.167.212.228/30 | 10.167.212.229 – 10.167.212.230 | 10.167.212.231 |
| 59 | 10.167.212.232/30 | 10.167.212.233 – 10.167.212.234 | 10.167.212.235 |
| 60 | 10.167.212.236/30 | 10.167.212.237 – 10.167.212.238 | 10.167.212.239 |
| 61 | 10.167.212.240/30 | 10.167.212.241 – 10.167.212.242 | 10.167.212.243 |
| 62 | 10.167.212.244/30 | 10.167.212.245 – 10.167.212.246 | 10.167.212.247 |
| 63 | 10.167.212.248/30 | 10.167.212.249 – 10.167.212.250 | 10.167.212.251 |
| 64 | 10.167.212.252/30 | 10.167.212.253 – 10.167.212.254 | 10.167.212.255 |
| 65 | 10.167.213.0/30 | 10.167.213.1 – 10.167.213.2 | 10.167.213.3 |
| 66 | 10.167.213.4/30 | 10.167.213.5 – 10.167.213.6 | 10.167.213.7 |
| 67 | 10.167.213.8/30 | 10.167.213.9 – 10.167.213.10 | 10.167.213.11 |
| 68 | 10.167.213.12/30 | 10.167.213.13 – 10.167.213.14 | 10.167.213.15 |
| 69 | 10.167.213.16/30 | 10.167.213.17 – 10.167.213.18 | 10.167.213.19 |
| 70 | 10.167.213.20/30 | 10.167.213.21 – 10.167.213.22 | 10.167.213.23 |
| 71 | 10.167.213.24/30 | 10.167.213.25 – 10.167.213.26 | 10.167.213.27 |
| 72 | 10.167.213.28/30 | 10.167.213.29 – 10.167.213.30 | 10.167.213.31 |
| 73 | 10.167.213.32/30 | 10.167.213.33 – 10.167.213.34 | 10.167.213.35 |
| 74 | 10.167.213.36/30 | 10.167.213.37 – 10.167.213.38 | 10.167.213.39 |
| 75 | 10.167.213.40/30 | 10.167.213.41 – 10.167.213.42 | 10.167.213.43 |
| 76 | 10.167.213.44/30 | 10.167.213.45 – 10.167.213.46 | 10.167.213.47 |
| 77 | 10.167.213.48/30 | 10.167.213.49 – 10.167.213.50 | 10.167.213.51 |
| 78 | 10.167.213.52/30 | 10.167.213.53 – 10.167.213.54 | 10.167.213.55 |
| 79 | 10.167.213.56/30 | 10.167.213.57 – 10.167.213.58 | 10.167.213.59 |
| 80 | 10.167.213.60/30 | 10.167.213.61 – 10.167.213.62 | 10.167.213.63 |
| 81 | 10.167.213.64/30 | 10.167.213.65 – 10.167.213.66 | 10.167.213.67 |
| 82 | 10.167.213.68/30 | 10.167.213.69 – 10.167.213.70 | 10.167.213.71 |
| 83 | 10.167.213.72/30 | 10.167.213.73 – 10.167.213.74 | 10.167.213.75 |
| 84 | 10.167.213.76/30 | 10.167.213.77 – 10.167.213.78 | 10.167.213.79 |
| 85 | 10.167.213.80/30 | 10.167.213.81 – 10.167.213.82 | 10.167.213.83 |
| 86 | 10.167.213.84/30 | 10.167.213.85 – 10.167.213.86 | 10.167.213.87 |
| 87 | 10.167.213.88/30 | 10.167.213.89 – 10.167.213.90 | 10.167.213.91 |
| 88 | 10.167.213.92/30 | 10.167.213.93 – 10.167.213.94 | 10.167.213.95 |
| 89 | 10.167.213.96/30 | 10.167.213.97 – 10.167.213.98 | 10.167.213.99 |
| 90 | 10.167.213.100/30 | 10.167.213.101 – 10.167.213.102 | 10.167.213.103 |
| 91 | 10.167.213.104/30 | 10.167.213.105 – 10.167.213.106 | 10.167.213.107 |
| 92 | 10.167.213.108/30 | 10.167.213.109 – 10.167.213.110 | 10.167.213.111 |
| 93 | 10.167.213.112/30 | 10.167.213.113 – 10.167.213.114 | 10.167.213.115 |
| 94 | 10.167.213.116/30 | 10.167.213.117 – 10.167.213.118 | 10.167.213.119 |
| 95 | 10.167.213.120/30 | 10.167.213.121 – 10.167.213.122 | 10.167.213.123 |
| 96 | 10.167.213.124/30 | 10.167.213.125 – 10.167.213.126 | 10.167.213.127 |
| 97 | 10.167.213.128/30 | 10.167.213.129 – 10.167.213.130 | 10.167.213.131 |
| 98 | 10.167.213.132/30 | 10.167.213.133 – 10.167.213.134 | 10.167.213.135 |
| 99 | 10.167.213.136/30 | 10.167.213.137 – 10.167.213.138 | 10.167.213.139 |
| 100 | 10.167.213.140/30 | 10.167.213.141 – 10.167.213.142 | 10.167.213.143 |
| 101 | 10.167.213.144/30 | 10.167.213.145 – 10.167.213.146 | 10.167.213.147 |
| 102 | 10.167.213.148/30 | 10.167.213.149 – 10.167.213.150 | 10.167.213.151 |
| 103 | 10.167.213.152/30 | 10.167.213.153 – 10.167.213.154 | 10.167.213.155 |
| 104 | 10.167.213.156/30 | 10.167.213.157 – 10.167.213.158 | 10.167.213.159 |
| 105 | 10.167.213.160/30 | 10.167.213.161 – 10.167.213.162 | 10.167.213.163 |
| 106 | 10.167.213.164/30 | 10.167.213.165 – 10.167.213.166 | 10.167.213.167 |
| 107 | 10.167.213.168/30 | 10.167.213.169 – 10.167.213.170 | 10.167.213.171 |
| 108 | 10.167.213.172/30 | 10.167.213.173 – 10.167.213.174 | 10.167.213.175 |
| 109 | 10.167.213.176/30 | 10.167.213.177 – 10.167.213.178 | 10.167.213.179 |
| 110 | 10.167.213.180/30 | 10.167.213.181 – 10.167.213.182 | 10.167.213.183 |
| 111 | 10.167.213.184/30 | 10.167.213.185 – 10.167.213.186 | 10.167.213.187 |
| 112 | 10.167.213.188/30 | 10.167.213.189 – 10.167.213.190 | 10.167.213.191 |
| 113 | 10.167.213.192/30 | 10.167.213.193 – 10.167.213.194 | 10.167.213.195 |
| 114 | 10.167.213.196/30 | 10.167.213.197 – 10.167.213.198 | 10.167.213.199 |
| 115 | 10.167.213.200/30 | 10.167.213.201 – 10.167.213.202 | 10.167.213.203 |
| 116 | 10.167.213.204/30 | 10.167.213.205 – 10.167.213.206 | 10.167.213.207 |
| 117 | 10.167.213.208/30 | 10.167.213.209 – 10.167.213.210 | 10.167.213.211 |
| 118 | 10.167.213.212/30 | 10.167.213.213 – 10.167.213.214 | 10.167.213.215 |
| 119 | 10.167.213.216/30 | 10.167.213.217 – 10.167.213.218 | 10.167.213.219 |
| 120 | 10.167.213.220/30 | 10.167.213.221 – 10.167.213.222 | 10.167.213.223 |
| 121 | 10.167.213.224/30 | 10.167.213.225 – 10.167.213.226 | 10.167.213.227 |
| 122 | 10.167.213.228/30 | 10.167.213.229 – 10.167.213.230 | 10.167.213.231 |
| 123 | 10.167.213.232/30 | 10.167.213.233 – 10.167.213.234 | 10.167.213.235 |
| 124 | 10.167.213.236/30 | 10.167.213.237 – 10.167.213.238 | 10.167.213.239 |
| 125 | 10.167.213.240/30 | 10.167.213.241 – 10.167.213.242 | 10.167.213.243 |
| 126 | 10.167.213.244/30 | 10.167.213.245 – 10.167.213.246 | 10.167.213.247 |
| 127 | 10.167.213.248/30 | 10.167.213.249 – 10.167.213.250 | 10.167.213.251 |
| 128 | 10.167.213.252/30 | 10.167.213.253 – 10.167.213.254 | 10.167.213.255 |
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.