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)10.167.156.0/23
network10.167.156.0/23
broadcast10.167.157.255
first host10.167.156.1
last host10.167.157.254
subnet mask255.255.254.0
wildcard0.0.1.255
addresses512
usable hosts510
classA
ipcalc 10.167.156.0/23
address00001010.10100111.10011100.00000000
subnet mask11111111.11111111.11111110.00000000
network00001010.10100111.10011100.00000000
broadcast00001010.10100111.10011101.11111111
green = network part, grey = host part
hex0x0aa79c00
decimal178756608
reverse dns0.156.167.10.in-addr.arpa
ipv4-mapped::ffff:aa7:9c00
/23 split into /30 · 128 subnets
close ×| # | network | host range | broadcast |
|---|---|---|---|
| 1 | 10.167.156.0/30 | 10.167.156.1 – 10.167.156.2 | 10.167.156.3 |
| 2 | 10.167.156.4/30 | 10.167.156.5 – 10.167.156.6 | 10.167.156.7 |
| 3 | 10.167.156.8/30 | 10.167.156.9 – 10.167.156.10 | 10.167.156.11 |
| 4 | 10.167.156.12/30 | 10.167.156.13 – 10.167.156.14 | 10.167.156.15 |
| 5 | 10.167.156.16/30 | 10.167.156.17 – 10.167.156.18 | 10.167.156.19 |
| 6 | 10.167.156.20/30 | 10.167.156.21 – 10.167.156.22 | 10.167.156.23 |
| 7 | 10.167.156.24/30 | 10.167.156.25 – 10.167.156.26 | 10.167.156.27 |
| 8 | 10.167.156.28/30 | 10.167.156.29 – 10.167.156.30 | 10.167.156.31 |
| 9 | 10.167.156.32/30 | 10.167.156.33 – 10.167.156.34 | 10.167.156.35 |
| 10 | 10.167.156.36/30 | 10.167.156.37 – 10.167.156.38 | 10.167.156.39 |
| 11 | 10.167.156.40/30 | 10.167.156.41 – 10.167.156.42 | 10.167.156.43 |
| 12 | 10.167.156.44/30 | 10.167.156.45 – 10.167.156.46 | 10.167.156.47 |
| 13 | 10.167.156.48/30 | 10.167.156.49 – 10.167.156.50 | 10.167.156.51 |
| 14 | 10.167.156.52/30 | 10.167.156.53 – 10.167.156.54 | 10.167.156.55 |
| 15 | 10.167.156.56/30 | 10.167.156.57 – 10.167.156.58 | 10.167.156.59 |
| 16 | 10.167.156.60/30 | 10.167.156.61 – 10.167.156.62 | 10.167.156.63 |
| 17 | 10.167.156.64/30 | 10.167.156.65 – 10.167.156.66 | 10.167.156.67 |
| 18 | 10.167.156.68/30 | 10.167.156.69 – 10.167.156.70 | 10.167.156.71 |
| 19 | 10.167.156.72/30 | 10.167.156.73 – 10.167.156.74 | 10.167.156.75 |
| 20 | 10.167.156.76/30 | 10.167.156.77 – 10.167.156.78 | 10.167.156.79 |
| 21 | 10.167.156.80/30 | 10.167.156.81 – 10.167.156.82 | 10.167.156.83 |
| 22 | 10.167.156.84/30 | 10.167.156.85 – 10.167.156.86 | 10.167.156.87 |
| 23 | 10.167.156.88/30 | 10.167.156.89 – 10.167.156.90 | 10.167.156.91 |
| 24 | 10.167.156.92/30 | 10.167.156.93 – 10.167.156.94 | 10.167.156.95 |
| 25 | 10.167.156.96/30 | 10.167.156.97 – 10.167.156.98 | 10.167.156.99 |
| 26 | 10.167.156.100/30 | 10.167.156.101 – 10.167.156.102 | 10.167.156.103 |
| 27 | 10.167.156.104/30 | 10.167.156.105 – 10.167.156.106 | 10.167.156.107 |
| 28 | 10.167.156.108/30 | 10.167.156.109 – 10.167.156.110 | 10.167.156.111 |
| 29 | 10.167.156.112/30 | 10.167.156.113 – 10.167.156.114 | 10.167.156.115 |
| 30 | 10.167.156.116/30 | 10.167.156.117 – 10.167.156.118 | 10.167.156.119 |
| 31 | 10.167.156.120/30 | 10.167.156.121 – 10.167.156.122 | 10.167.156.123 |
| 32 | 10.167.156.124/30 | 10.167.156.125 – 10.167.156.126 | 10.167.156.127 |
| 33 | 10.167.156.128/30 | 10.167.156.129 – 10.167.156.130 | 10.167.156.131 |
| 34 | 10.167.156.132/30 | 10.167.156.133 – 10.167.156.134 | 10.167.156.135 |
| 35 | 10.167.156.136/30 | 10.167.156.137 – 10.167.156.138 | 10.167.156.139 |
| 36 | 10.167.156.140/30 | 10.167.156.141 – 10.167.156.142 | 10.167.156.143 |
| 37 | 10.167.156.144/30 | 10.167.156.145 – 10.167.156.146 | 10.167.156.147 |
| 38 | 10.167.156.148/30 | 10.167.156.149 – 10.167.156.150 | 10.167.156.151 |
| 39 | 10.167.156.152/30 | 10.167.156.153 – 10.167.156.154 | 10.167.156.155 |
| 40 | 10.167.156.156/30 | 10.167.156.157 – 10.167.156.158 | 10.167.156.159 |
| 41 | 10.167.156.160/30 | 10.167.156.161 – 10.167.156.162 | 10.167.156.163 |
| 42 | 10.167.156.164/30 | 10.167.156.165 – 10.167.156.166 | 10.167.156.167 |
| 43 | 10.167.156.168/30 | 10.167.156.169 – 10.167.156.170 | 10.167.156.171 |
| 44 | 10.167.156.172/30 | 10.167.156.173 – 10.167.156.174 | 10.167.156.175 |
| 45 | 10.167.156.176/30 | 10.167.156.177 – 10.167.156.178 | 10.167.156.179 |
| 46 | 10.167.156.180/30 | 10.167.156.181 – 10.167.156.182 | 10.167.156.183 |
| 47 | 10.167.156.184/30 | 10.167.156.185 – 10.167.156.186 | 10.167.156.187 |
| 48 | 10.167.156.188/30 | 10.167.156.189 – 10.167.156.190 | 10.167.156.191 |
| 49 | 10.167.156.192/30 | 10.167.156.193 – 10.167.156.194 | 10.167.156.195 |
| 50 | 10.167.156.196/30 | 10.167.156.197 – 10.167.156.198 | 10.167.156.199 |
| 51 | 10.167.156.200/30 | 10.167.156.201 – 10.167.156.202 | 10.167.156.203 |
| 52 | 10.167.156.204/30 | 10.167.156.205 – 10.167.156.206 | 10.167.156.207 |
| 53 | 10.167.156.208/30 | 10.167.156.209 – 10.167.156.210 | 10.167.156.211 |
| 54 | 10.167.156.212/30 | 10.167.156.213 – 10.167.156.214 | 10.167.156.215 |
| 55 | 10.167.156.216/30 | 10.167.156.217 – 10.167.156.218 | 10.167.156.219 |
| 56 | 10.167.156.220/30 | 10.167.156.221 – 10.167.156.222 | 10.167.156.223 |
| 57 | 10.167.156.224/30 | 10.167.156.225 – 10.167.156.226 | 10.167.156.227 |
| 58 | 10.167.156.228/30 | 10.167.156.229 – 10.167.156.230 | 10.167.156.231 |
| 59 | 10.167.156.232/30 | 10.167.156.233 – 10.167.156.234 | 10.167.156.235 |
| 60 | 10.167.156.236/30 | 10.167.156.237 – 10.167.156.238 | 10.167.156.239 |
| 61 | 10.167.156.240/30 | 10.167.156.241 – 10.167.156.242 | 10.167.156.243 |
| 62 | 10.167.156.244/30 | 10.167.156.245 – 10.167.156.246 | 10.167.156.247 |
| 63 | 10.167.156.248/30 | 10.167.156.249 – 10.167.156.250 | 10.167.156.251 |
| 64 | 10.167.156.252/30 | 10.167.156.253 – 10.167.156.254 | 10.167.156.255 |
| 65 | 10.167.157.0/30 | 10.167.157.1 – 10.167.157.2 | 10.167.157.3 |
| 66 | 10.167.157.4/30 | 10.167.157.5 – 10.167.157.6 | 10.167.157.7 |
| 67 | 10.167.157.8/30 | 10.167.157.9 – 10.167.157.10 | 10.167.157.11 |
| 68 | 10.167.157.12/30 | 10.167.157.13 – 10.167.157.14 | 10.167.157.15 |
| 69 | 10.167.157.16/30 | 10.167.157.17 – 10.167.157.18 | 10.167.157.19 |
| 70 | 10.167.157.20/30 | 10.167.157.21 – 10.167.157.22 | 10.167.157.23 |
| 71 | 10.167.157.24/30 | 10.167.157.25 – 10.167.157.26 | 10.167.157.27 |
| 72 | 10.167.157.28/30 | 10.167.157.29 – 10.167.157.30 | 10.167.157.31 |
| 73 | 10.167.157.32/30 | 10.167.157.33 – 10.167.157.34 | 10.167.157.35 |
| 74 | 10.167.157.36/30 | 10.167.157.37 – 10.167.157.38 | 10.167.157.39 |
| 75 | 10.167.157.40/30 | 10.167.157.41 – 10.167.157.42 | 10.167.157.43 |
| 76 | 10.167.157.44/30 | 10.167.157.45 – 10.167.157.46 | 10.167.157.47 |
| 77 | 10.167.157.48/30 | 10.167.157.49 – 10.167.157.50 | 10.167.157.51 |
| 78 | 10.167.157.52/30 | 10.167.157.53 – 10.167.157.54 | 10.167.157.55 |
| 79 | 10.167.157.56/30 | 10.167.157.57 – 10.167.157.58 | 10.167.157.59 |
| 80 | 10.167.157.60/30 | 10.167.157.61 – 10.167.157.62 | 10.167.157.63 |
| 81 | 10.167.157.64/30 | 10.167.157.65 – 10.167.157.66 | 10.167.157.67 |
| 82 | 10.167.157.68/30 | 10.167.157.69 – 10.167.157.70 | 10.167.157.71 |
| 83 | 10.167.157.72/30 | 10.167.157.73 – 10.167.157.74 | 10.167.157.75 |
| 84 | 10.167.157.76/30 | 10.167.157.77 – 10.167.157.78 | 10.167.157.79 |
| 85 | 10.167.157.80/30 | 10.167.157.81 – 10.167.157.82 | 10.167.157.83 |
| 86 | 10.167.157.84/30 | 10.167.157.85 – 10.167.157.86 | 10.167.157.87 |
| 87 | 10.167.157.88/30 | 10.167.157.89 – 10.167.157.90 | 10.167.157.91 |
| 88 | 10.167.157.92/30 | 10.167.157.93 – 10.167.157.94 | 10.167.157.95 |
| 89 | 10.167.157.96/30 | 10.167.157.97 – 10.167.157.98 | 10.167.157.99 |
| 90 | 10.167.157.100/30 | 10.167.157.101 – 10.167.157.102 | 10.167.157.103 |
| 91 | 10.167.157.104/30 | 10.167.157.105 – 10.167.157.106 | 10.167.157.107 |
| 92 | 10.167.157.108/30 | 10.167.157.109 – 10.167.157.110 | 10.167.157.111 |
| 93 | 10.167.157.112/30 | 10.167.157.113 – 10.167.157.114 | 10.167.157.115 |
| 94 | 10.167.157.116/30 | 10.167.157.117 – 10.167.157.118 | 10.167.157.119 |
| 95 | 10.167.157.120/30 | 10.167.157.121 – 10.167.157.122 | 10.167.157.123 |
| 96 | 10.167.157.124/30 | 10.167.157.125 – 10.167.157.126 | 10.167.157.127 |
| 97 | 10.167.157.128/30 | 10.167.157.129 – 10.167.157.130 | 10.167.157.131 |
| 98 | 10.167.157.132/30 | 10.167.157.133 – 10.167.157.134 | 10.167.157.135 |
| 99 | 10.167.157.136/30 | 10.167.157.137 – 10.167.157.138 | 10.167.157.139 |
| 100 | 10.167.157.140/30 | 10.167.157.141 – 10.167.157.142 | 10.167.157.143 |
| 101 | 10.167.157.144/30 | 10.167.157.145 – 10.167.157.146 | 10.167.157.147 |
| 102 | 10.167.157.148/30 | 10.167.157.149 – 10.167.157.150 | 10.167.157.151 |
| 103 | 10.167.157.152/30 | 10.167.157.153 – 10.167.157.154 | 10.167.157.155 |
| 104 | 10.167.157.156/30 | 10.167.157.157 – 10.167.157.158 | 10.167.157.159 |
| 105 | 10.167.157.160/30 | 10.167.157.161 – 10.167.157.162 | 10.167.157.163 |
| 106 | 10.167.157.164/30 | 10.167.157.165 – 10.167.157.166 | 10.167.157.167 |
| 107 | 10.167.157.168/30 | 10.167.157.169 – 10.167.157.170 | 10.167.157.171 |
| 108 | 10.167.157.172/30 | 10.167.157.173 – 10.167.157.174 | 10.167.157.175 |
| 109 | 10.167.157.176/30 | 10.167.157.177 – 10.167.157.178 | 10.167.157.179 |
| 110 | 10.167.157.180/30 | 10.167.157.181 – 10.167.157.182 | 10.167.157.183 |
| 111 | 10.167.157.184/30 | 10.167.157.185 – 10.167.157.186 | 10.167.157.187 |
| 112 | 10.167.157.188/30 | 10.167.157.189 – 10.167.157.190 | 10.167.157.191 |
| 113 | 10.167.157.192/30 | 10.167.157.193 – 10.167.157.194 | 10.167.157.195 |
| 114 | 10.167.157.196/30 | 10.167.157.197 – 10.167.157.198 | 10.167.157.199 |
| 115 | 10.167.157.200/30 | 10.167.157.201 – 10.167.157.202 | 10.167.157.203 |
| 116 | 10.167.157.204/30 | 10.167.157.205 – 10.167.157.206 | 10.167.157.207 |
| 117 | 10.167.157.208/30 | 10.167.157.209 – 10.167.157.210 | 10.167.157.211 |
| 118 | 10.167.157.212/30 | 10.167.157.213 – 10.167.157.214 | 10.167.157.215 |
| 119 | 10.167.157.216/30 | 10.167.157.217 – 10.167.157.218 | 10.167.157.219 |
| 120 | 10.167.157.220/30 | 10.167.157.221 – 10.167.157.222 | 10.167.157.223 |
| 121 | 10.167.157.224/30 | 10.167.157.225 – 10.167.157.226 | 10.167.157.227 |
| 122 | 10.167.157.228/30 | 10.167.157.229 – 10.167.157.230 | 10.167.157.231 |
| 123 | 10.167.157.232/30 | 10.167.157.233 – 10.167.157.234 | 10.167.157.235 |
| 124 | 10.167.157.236/30 | 10.167.157.237 – 10.167.157.238 | 10.167.157.239 |
| 125 | 10.167.157.240/30 | 10.167.157.241 – 10.167.157.242 | 10.167.157.243 |
| 126 | 10.167.157.244/30 | 10.167.157.245 – 10.167.157.246 | 10.167.157.247 |
| 127 | 10.167.157.248/30 | 10.167.157.249 – 10.167.157.250 | 10.167.157.251 |
| 128 | 10.167.157.252/30 | 10.167.157.253 – 10.167.157.254 | 10.167.157.255 |
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.