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)10.167.180.0/23
network10.167.180.0/23
broadcast10.167.181.255
first host10.167.180.1
last host10.167.181.254
subnet mask255.255.254.0
wildcard0.0.1.255
addresses512
usable hosts510
classA
ipcalc 10.167.180.0/23
address00001010.10100111.10110100.00000000
subnet mask11111111.11111111.11111110.00000000
network00001010.10100111.10110100.00000000
broadcast00001010.10100111.10110101.11111111
green = network part, grey = host part
hex0x0aa7b400
decimal178762752
reverse dns0.180.167.10.in-addr.arpa
ipv4-mapped::ffff:aa7:b400
/23 split into /30 · 128 subnets
close ×| # | network | host range | broadcast |
|---|---|---|---|
| 1 | 10.167.180.0/30 | 10.167.180.1 – 10.167.180.2 | 10.167.180.3 |
| 2 | 10.167.180.4/30 | 10.167.180.5 – 10.167.180.6 | 10.167.180.7 |
| 3 | 10.167.180.8/30 | 10.167.180.9 – 10.167.180.10 | 10.167.180.11 |
| 4 | 10.167.180.12/30 | 10.167.180.13 – 10.167.180.14 | 10.167.180.15 |
| 5 | 10.167.180.16/30 | 10.167.180.17 – 10.167.180.18 | 10.167.180.19 |
| 6 | 10.167.180.20/30 | 10.167.180.21 – 10.167.180.22 | 10.167.180.23 |
| 7 | 10.167.180.24/30 | 10.167.180.25 – 10.167.180.26 | 10.167.180.27 |
| 8 | 10.167.180.28/30 | 10.167.180.29 – 10.167.180.30 | 10.167.180.31 |
| 9 | 10.167.180.32/30 | 10.167.180.33 – 10.167.180.34 | 10.167.180.35 |
| 10 | 10.167.180.36/30 | 10.167.180.37 – 10.167.180.38 | 10.167.180.39 |
| 11 | 10.167.180.40/30 | 10.167.180.41 – 10.167.180.42 | 10.167.180.43 |
| 12 | 10.167.180.44/30 | 10.167.180.45 – 10.167.180.46 | 10.167.180.47 |
| 13 | 10.167.180.48/30 | 10.167.180.49 – 10.167.180.50 | 10.167.180.51 |
| 14 | 10.167.180.52/30 | 10.167.180.53 – 10.167.180.54 | 10.167.180.55 |
| 15 | 10.167.180.56/30 | 10.167.180.57 – 10.167.180.58 | 10.167.180.59 |
| 16 | 10.167.180.60/30 | 10.167.180.61 – 10.167.180.62 | 10.167.180.63 |
| 17 | 10.167.180.64/30 | 10.167.180.65 – 10.167.180.66 | 10.167.180.67 |
| 18 | 10.167.180.68/30 | 10.167.180.69 – 10.167.180.70 | 10.167.180.71 |
| 19 | 10.167.180.72/30 | 10.167.180.73 – 10.167.180.74 | 10.167.180.75 |
| 20 | 10.167.180.76/30 | 10.167.180.77 – 10.167.180.78 | 10.167.180.79 |
| 21 | 10.167.180.80/30 | 10.167.180.81 – 10.167.180.82 | 10.167.180.83 |
| 22 | 10.167.180.84/30 | 10.167.180.85 – 10.167.180.86 | 10.167.180.87 |
| 23 | 10.167.180.88/30 | 10.167.180.89 – 10.167.180.90 | 10.167.180.91 |
| 24 | 10.167.180.92/30 | 10.167.180.93 – 10.167.180.94 | 10.167.180.95 |
| 25 | 10.167.180.96/30 | 10.167.180.97 – 10.167.180.98 | 10.167.180.99 |
| 26 | 10.167.180.100/30 | 10.167.180.101 – 10.167.180.102 | 10.167.180.103 |
| 27 | 10.167.180.104/30 | 10.167.180.105 – 10.167.180.106 | 10.167.180.107 |
| 28 | 10.167.180.108/30 | 10.167.180.109 – 10.167.180.110 | 10.167.180.111 |
| 29 | 10.167.180.112/30 | 10.167.180.113 – 10.167.180.114 | 10.167.180.115 |
| 30 | 10.167.180.116/30 | 10.167.180.117 – 10.167.180.118 | 10.167.180.119 |
| 31 | 10.167.180.120/30 | 10.167.180.121 – 10.167.180.122 | 10.167.180.123 |
| 32 | 10.167.180.124/30 | 10.167.180.125 – 10.167.180.126 | 10.167.180.127 |
| 33 | 10.167.180.128/30 | 10.167.180.129 – 10.167.180.130 | 10.167.180.131 |
| 34 | 10.167.180.132/30 | 10.167.180.133 – 10.167.180.134 | 10.167.180.135 |
| 35 | 10.167.180.136/30 | 10.167.180.137 – 10.167.180.138 | 10.167.180.139 |
| 36 | 10.167.180.140/30 | 10.167.180.141 – 10.167.180.142 | 10.167.180.143 |
| 37 | 10.167.180.144/30 | 10.167.180.145 – 10.167.180.146 | 10.167.180.147 |
| 38 | 10.167.180.148/30 | 10.167.180.149 – 10.167.180.150 | 10.167.180.151 |
| 39 | 10.167.180.152/30 | 10.167.180.153 – 10.167.180.154 | 10.167.180.155 |
| 40 | 10.167.180.156/30 | 10.167.180.157 – 10.167.180.158 | 10.167.180.159 |
| 41 | 10.167.180.160/30 | 10.167.180.161 – 10.167.180.162 | 10.167.180.163 |
| 42 | 10.167.180.164/30 | 10.167.180.165 – 10.167.180.166 | 10.167.180.167 |
| 43 | 10.167.180.168/30 | 10.167.180.169 – 10.167.180.170 | 10.167.180.171 |
| 44 | 10.167.180.172/30 | 10.167.180.173 – 10.167.180.174 | 10.167.180.175 |
| 45 | 10.167.180.176/30 | 10.167.180.177 – 10.167.180.178 | 10.167.180.179 |
| 46 | 10.167.180.180/30 | 10.167.180.181 – 10.167.180.182 | 10.167.180.183 |
| 47 | 10.167.180.184/30 | 10.167.180.185 – 10.167.180.186 | 10.167.180.187 |
| 48 | 10.167.180.188/30 | 10.167.180.189 – 10.167.180.190 | 10.167.180.191 |
| 49 | 10.167.180.192/30 | 10.167.180.193 – 10.167.180.194 | 10.167.180.195 |
| 50 | 10.167.180.196/30 | 10.167.180.197 – 10.167.180.198 | 10.167.180.199 |
| 51 | 10.167.180.200/30 | 10.167.180.201 – 10.167.180.202 | 10.167.180.203 |
| 52 | 10.167.180.204/30 | 10.167.180.205 – 10.167.180.206 | 10.167.180.207 |
| 53 | 10.167.180.208/30 | 10.167.180.209 – 10.167.180.210 | 10.167.180.211 |
| 54 | 10.167.180.212/30 | 10.167.180.213 – 10.167.180.214 | 10.167.180.215 |
| 55 | 10.167.180.216/30 | 10.167.180.217 – 10.167.180.218 | 10.167.180.219 |
| 56 | 10.167.180.220/30 | 10.167.180.221 – 10.167.180.222 | 10.167.180.223 |
| 57 | 10.167.180.224/30 | 10.167.180.225 – 10.167.180.226 | 10.167.180.227 |
| 58 | 10.167.180.228/30 | 10.167.180.229 – 10.167.180.230 | 10.167.180.231 |
| 59 | 10.167.180.232/30 | 10.167.180.233 – 10.167.180.234 | 10.167.180.235 |
| 60 | 10.167.180.236/30 | 10.167.180.237 – 10.167.180.238 | 10.167.180.239 |
| 61 | 10.167.180.240/30 | 10.167.180.241 – 10.167.180.242 | 10.167.180.243 |
| 62 | 10.167.180.244/30 | 10.167.180.245 – 10.167.180.246 | 10.167.180.247 |
| 63 | 10.167.180.248/30 | 10.167.180.249 – 10.167.180.250 | 10.167.180.251 |
| 64 | 10.167.180.252/30 | 10.167.180.253 – 10.167.180.254 | 10.167.180.255 |
| 65 | 10.167.181.0/30 | 10.167.181.1 – 10.167.181.2 | 10.167.181.3 |
| 66 | 10.167.181.4/30 | 10.167.181.5 – 10.167.181.6 | 10.167.181.7 |
| 67 | 10.167.181.8/30 | 10.167.181.9 – 10.167.181.10 | 10.167.181.11 |
| 68 | 10.167.181.12/30 | 10.167.181.13 – 10.167.181.14 | 10.167.181.15 |
| 69 | 10.167.181.16/30 | 10.167.181.17 – 10.167.181.18 | 10.167.181.19 |
| 70 | 10.167.181.20/30 | 10.167.181.21 – 10.167.181.22 | 10.167.181.23 |
| 71 | 10.167.181.24/30 | 10.167.181.25 – 10.167.181.26 | 10.167.181.27 |
| 72 | 10.167.181.28/30 | 10.167.181.29 – 10.167.181.30 | 10.167.181.31 |
| 73 | 10.167.181.32/30 | 10.167.181.33 – 10.167.181.34 | 10.167.181.35 |
| 74 | 10.167.181.36/30 | 10.167.181.37 – 10.167.181.38 | 10.167.181.39 |
| 75 | 10.167.181.40/30 | 10.167.181.41 – 10.167.181.42 | 10.167.181.43 |
| 76 | 10.167.181.44/30 | 10.167.181.45 – 10.167.181.46 | 10.167.181.47 |
| 77 | 10.167.181.48/30 | 10.167.181.49 – 10.167.181.50 | 10.167.181.51 |
| 78 | 10.167.181.52/30 | 10.167.181.53 – 10.167.181.54 | 10.167.181.55 |
| 79 | 10.167.181.56/30 | 10.167.181.57 – 10.167.181.58 | 10.167.181.59 |
| 80 | 10.167.181.60/30 | 10.167.181.61 – 10.167.181.62 | 10.167.181.63 |
| 81 | 10.167.181.64/30 | 10.167.181.65 – 10.167.181.66 | 10.167.181.67 |
| 82 | 10.167.181.68/30 | 10.167.181.69 – 10.167.181.70 | 10.167.181.71 |
| 83 | 10.167.181.72/30 | 10.167.181.73 – 10.167.181.74 | 10.167.181.75 |
| 84 | 10.167.181.76/30 | 10.167.181.77 – 10.167.181.78 | 10.167.181.79 |
| 85 | 10.167.181.80/30 | 10.167.181.81 – 10.167.181.82 | 10.167.181.83 |
| 86 | 10.167.181.84/30 | 10.167.181.85 – 10.167.181.86 | 10.167.181.87 |
| 87 | 10.167.181.88/30 | 10.167.181.89 – 10.167.181.90 | 10.167.181.91 |
| 88 | 10.167.181.92/30 | 10.167.181.93 – 10.167.181.94 | 10.167.181.95 |
| 89 | 10.167.181.96/30 | 10.167.181.97 – 10.167.181.98 | 10.167.181.99 |
| 90 | 10.167.181.100/30 | 10.167.181.101 – 10.167.181.102 | 10.167.181.103 |
| 91 | 10.167.181.104/30 | 10.167.181.105 – 10.167.181.106 | 10.167.181.107 |
| 92 | 10.167.181.108/30 | 10.167.181.109 – 10.167.181.110 | 10.167.181.111 |
| 93 | 10.167.181.112/30 | 10.167.181.113 – 10.167.181.114 | 10.167.181.115 |
| 94 | 10.167.181.116/30 | 10.167.181.117 – 10.167.181.118 | 10.167.181.119 |
| 95 | 10.167.181.120/30 | 10.167.181.121 – 10.167.181.122 | 10.167.181.123 |
| 96 | 10.167.181.124/30 | 10.167.181.125 – 10.167.181.126 | 10.167.181.127 |
| 97 | 10.167.181.128/30 | 10.167.181.129 – 10.167.181.130 | 10.167.181.131 |
| 98 | 10.167.181.132/30 | 10.167.181.133 – 10.167.181.134 | 10.167.181.135 |
| 99 | 10.167.181.136/30 | 10.167.181.137 – 10.167.181.138 | 10.167.181.139 |
| 100 | 10.167.181.140/30 | 10.167.181.141 – 10.167.181.142 | 10.167.181.143 |
| 101 | 10.167.181.144/30 | 10.167.181.145 – 10.167.181.146 | 10.167.181.147 |
| 102 | 10.167.181.148/30 | 10.167.181.149 – 10.167.181.150 | 10.167.181.151 |
| 103 | 10.167.181.152/30 | 10.167.181.153 – 10.167.181.154 | 10.167.181.155 |
| 104 | 10.167.181.156/30 | 10.167.181.157 – 10.167.181.158 | 10.167.181.159 |
| 105 | 10.167.181.160/30 | 10.167.181.161 – 10.167.181.162 | 10.167.181.163 |
| 106 | 10.167.181.164/30 | 10.167.181.165 – 10.167.181.166 | 10.167.181.167 |
| 107 | 10.167.181.168/30 | 10.167.181.169 – 10.167.181.170 | 10.167.181.171 |
| 108 | 10.167.181.172/30 | 10.167.181.173 – 10.167.181.174 | 10.167.181.175 |
| 109 | 10.167.181.176/30 | 10.167.181.177 – 10.167.181.178 | 10.167.181.179 |
| 110 | 10.167.181.180/30 | 10.167.181.181 – 10.167.181.182 | 10.167.181.183 |
| 111 | 10.167.181.184/30 | 10.167.181.185 – 10.167.181.186 | 10.167.181.187 |
| 112 | 10.167.181.188/30 | 10.167.181.189 – 10.167.181.190 | 10.167.181.191 |
| 113 | 10.167.181.192/30 | 10.167.181.193 – 10.167.181.194 | 10.167.181.195 |
| 114 | 10.167.181.196/30 | 10.167.181.197 – 10.167.181.198 | 10.167.181.199 |
| 115 | 10.167.181.200/30 | 10.167.181.201 – 10.167.181.202 | 10.167.181.203 |
| 116 | 10.167.181.204/30 | 10.167.181.205 – 10.167.181.206 | 10.167.181.207 |
| 117 | 10.167.181.208/30 | 10.167.181.209 – 10.167.181.210 | 10.167.181.211 |
| 118 | 10.167.181.212/30 | 10.167.181.213 – 10.167.181.214 | 10.167.181.215 |
| 119 | 10.167.181.216/30 | 10.167.181.217 – 10.167.181.218 | 10.167.181.219 |
| 120 | 10.167.181.220/30 | 10.167.181.221 – 10.167.181.222 | 10.167.181.223 |
| 121 | 10.167.181.224/30 | 10.167.181.225 – 10.167.181.226 | 10.167.181.227 |
| 122 | 10.167.181.228/30 | 10.167.181.229 – 10.167.181.230 | 10.167.181.231 |
| 123 | 10.167.181.232/30 | 10.167.181.233 – 10.167.181.234 | 10.167.181.235 |
| 124 | 10.167.181.236/30 | 10.167.181.237 – 10.167.181.238 | 10.167.181.239 |
| 125 | 10.167.181.240/30 | 10.167.181.241 – 10.167.181.242 | 10.167.181.243 |
| 126 | 10.167.181.244/30 | 10.167.181.245 – 10.167.181.246 | 10.167.181.247 |
| 127 | 10.167.181.248/30 | 10.167.181.249 – 10.167.181.250 | 10.167.181.251 |
| 128 | 10.167.181.252/30 | 10.167.181.253 – 10.167.181.254 | 10.167.181.255 |
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.