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)10.167.178.0/23
network10.167.178.0/23
broadcast10.167.179.255
first host10.167.178.1
last host10.167.179.254
subnet mask255.255.254.0
wildcard0.0.1.255
addresses512
usable hosts510
classA
ipcalc 10.167.178.0/23
address00001010.10100111.10110010.00000000
subnet mask11111111.11111111.11111110.00000000
network00001010.10100111.10110010.00000000
broadcast00001010.10100111.10110011.11111111
green = network part, grey = host part
hex0x0aa7b200
decimal178762240
reverse dns0.178.167.10.in-addr.arpa
ipv4-mapped::ffff:aa7:b200
/23 split into /30 · 128 subnets
close ×| # | network | host range | broadcast |
|---|---|---|---|
| 1 | 10.167.178.0/30 | 10.167.178.1 – 10.167.178.2 | 10.167.178.3 |
| 2 | 10.167.178.4/30 | 10.167.178.5 – 10.167.178.6 | 10.167.178.7 |
| 3 | 10.167.178.8/30 | 10.167.178.9 – 10.167.178.10 | 10.167.178.11 |
| 4 | 10.167.178.12/30 | 10.167.178.13 – 10.167.178.14 | 10.167.178.15 |
| 5 | 10.167.178.16/30 | 10.167.178.17 – 10.167.178.18 | 10.167.178.19 |
| 6 | 10.167.178.20/30 | 10.167.178.21 – 10.167.178.22 | 10.167.178.23 |
| 7 | 10.167.178.24/30 | 10.167.178.25 – 10.167.178.26 | 10.167.178.27 |
| 8 | 10.167.178.28/30 | 10.167.178.29 – 10.167.178.30 | 10.167.178.31 |
| 9 | 10.167.178.32/30 | 10.167.178.33 – 10.167.178.34 | 10.167.178.35 |
| 10 | 10.167.178.36/30 | 10.167.178.37 – 10.167.178.38 | 10.167.178.39 |
| 11 | 10.167.178.40/30 | 10.167.178.41 – 10.167.178.42 | 10.167.178.43 |
| 12 | 10.167.178.44/30 | 10.167.178.45 – 10.167.178.46 | 10.167.178.47 |
| 13 | 10.167.178.48/30 | 10.167.178.49 – 10.167.178.50 | 10.167.178.51 |
| 14 | 10.167.178.52/30 | 10.167.178.53 – 10.167.178.54 | 10.167.178.55 |
| 15 | 10.167.178.56/30 | 10.167.178.57 – 10.167.178.58 | 10.167.178.59 |
| 16 | 10.167.178.60/30 | 10.167.178.61 – 10.167.178.62 | 10.167.178.63 |
| 17 | 10.167.178.64/30 | 10.167.178.65 – 10.167.178.66 | 10.167.178.67 |
| 18 | 10.167.178.68/30 | 10.167.178.69 – 10.167.178.70 | 10.167.178.71 |
| 19 | 10.167.178.72/30 | 10.167.178.73 – 10.167.178.74 | 10.167.178.75 |
| 20 | 10.167.178.76/30 | 10.167.178.77 – 10.167.178.78 | 10.167.178.79 |
| 21 | 10.167.178.80/30 | 10.167.178.81 – 10.167.178.82 | 10.167.178.83 |
| 22 | 10.167.178.84/30 | 10.167.178.85 – 10.167.178.86 | 10.167.178.87 |
| 23 | 10.167.178.88/30 | 10.167.178.89 – 10.167.178.90 | 10.167.178.91 |
| 24 | 10.167.178.92/30 | 10.167.178.93 – 10.167.178.94 | 10.167.178.95 |
| 25 | 10.167.178.96/30 | 10.167.178.97 – 10.167.178.98 | 10.167.178.99 |
| 26 | 10.167.178.100/30 | 10.167.178.101 – 10.167.178.102 | 10.167.178.103 |
| 27 | 10.167.178.104/30 | 10.167.178.105 – 10.167.178.106 | 10.167.178.107 |
| 28 | 10.167.178.108/30 | 10.167.178.109 – 10.167.178.110 | 10.167.178.111 |
| 29 | 10.167.178.112/30 | 10.167.178.113 – 10.167.178.114 | 10.167.178.115 |
| 30 | 10.167.178.116/30 | 10.167.178.117 – 10.167.178.118 | 10.167.178.119 |
| 31 | 10.167.178.120/30 | 10.167.178.121 – 10.167.178.122 | 10.167.178.123 |
| 32 | 10.167.178.124/30 | 10.167.178.125 – 10.167.178.126 | 10.167.178.127 |
| 33 | 10.167.178.128/30 | 10.167.178.129 – 10.167.178.130 | 10.167.178.131 |
| 34 | 10.167.178.132/30 | 10.167.178.133 – 10.167.178.134 | 10.167.178.135 |
| 35 | 10.167.178.136/30 | 10.167.178.137 – 10.167.178.138 | 10.167.178.139 |
| 36 | 10.167.178.140/30 | 10.167.178.141 – 10.167.178.142 | 10.167.178.143 |
| 37 | 10.167.178.144/30 | 10.167.178.145 – 10.167.178.146 | 10.167.178.147 |
| 38 | 10.167.178.148/30 | 10.167.178.149 – 10.167.178.150 | 10.167.178.151 |
| 39 | 10.167.178.152/30 | 10.167.178.153 – 10.167.178.154 | 10.167.178.155 |
| 40 | 10.167.178.156/30 | 10.167.178.157 – 10.167.178.158 | 10.167.178.159 |
| 41 | 10.167.178.160/30 | 10.167.178.161 – 10.167.178.162 | 10.167.178.163 |
| 42 | 10.167.178.164/30 | 10.167.178.165 – 10.167.178.166 | 10.167.178.167 |
| 43 | 10.167.178.168/30 | 10.167.178.169 – 10.167.178.170 | 10.167.178.171 |
| 44 | 10.167.178.172/30 | 10.167.178.173 – 10.167.178.174 | 10.167.178.175 |
| 45 | 10.167.178.176/30 | 10.167.178.177 – 10.167.178.178 | 10.167.178.179 |
| 46 | 10.167.178.180/30 | 10.167.178.181 – 10.167.178.182 | 10.167.178.183 |
| 47 | 10.167.178.184/30 | 10.167.178.185 – 10.167.178.186 | 10.167.178.187 |
| 48 | 10.167.178.188/30 | 10.167.178.189 – 10.167.178.190 | 10.167.178.191 |
| 49 | 10.167.178.192/30 | 10.167.178.193 – 10.167.178.194 | 10.167.178.195 |
| 50 | 10.167.178.196/30 | 10.167.178.197 – 10.167.178.198 | 10.167.178.199 |
| 51 | 10.167.178.200/30 | 10.167.178.201 – 10.167.178.202 | 10.167.178.203 |
| 52 | 10.167.178.204/30 | 10.167.178.205 – 10.167.178.206 | 10.167.178.207 |
| 53 | 10.167.178.208/30 | 10.167.178.209 – 10.167.178.210 | 10.167.178.211 |
| 54 | 10.167.178.212/30 | 10.167.178.213 – 10.167.178.214 | 10.167.178.215 |
| 55 | 10.167.178.216/30 | 10.167.178.217 – 10.167.178.218 | 10.167.178.219 |
| 56 | 10.167.178.220/30 | 10.167.178.221 – 10.167.178.222 | 10.167.178.223 |
| 57 | 10.167.178.224/30 | 10.167.178.225 – 10.167.178.226 | 10.167.178.227 |
| 58 | 10.167.178.228/30 | 10.167.178.229 – 10.167.178.230 | 10.167.178.231 |
| 59 | 10.167.178.232/30 | 10.167.178.233 – 10.167.178.234 | 10.167.178.235 |
| 60 | 10.167.178.236/30 | 10.167.178.237 – 10.167.178.238 | 10.167.178.239 |
| 61 | 10.167.178.240/30 | 10.167.178.241 – 10.167.178.242 | 10.167.178.243 |
| 62 | 10.167.178.244/30 | 10.167.178.245 – 10.167.178.246 | 10.167.178.247 |
| 63 | 10.167.178.248/30 | 10.167.178.249 – 10.167.178.250 | 10.167.178.251 |
| 64 | 10.167.178.252/30 | 10.167.178.253 – 10.167.178.254 | 10.167.178.255 |
| 65 | 10.167.179.0/30 | 10.167.179.1 – 10.167.179.2 | 10.167.179.3 |
| 66 | 10.167.179.4/30 | 10.167.179.5 – 10.167.179.6 | 10.167.179.7 |
| 67 | 10.167.179.8/30 | 10.167.179.9 – 10.167.179.10 | 10.167.179.11 |
| 68 | 10.167.179.12/30 | 10.167.179.13 – 10.167.179.14 | 10.167.179.15 |
| 69 | 10.167.179.16/30 | 10.167.179.17 – 10.167.179.18 | 10.167.179.19 |
| 70 | 10.167.179.20/30 | 10.167.179.21 – 10.167.179.22 | 10.167.179.23 |
| 71 | 10.167.179.24/30 | 10.167.179.25 – 10.167.179.26 | 10.167.179.27 |
| 72 | 10.167.179.28/30 | 10.167.179.29 – 10.167.179.30 | 10.167.179.31 |
| 73 | 10.167.179.32/30 | 10.167.179.33 – 10.167.179.34 | 10.167.179.35 |
| 74 | 10.167.179.36/30 | 10.167.179.37 – 10.167.179.38 | 10.167.179.39 |
| 75 | 10.167.179.40/30 | 10.167.179.41 – 10.167.179.42 | 10.167.179.43 |
| 76 | 10.167.179.44/30 | 10.167.179.45 – 10.167.179.46 | 10.167.179.47 |
| 77 | 10.167.179.48/30 | 10.167.179.49 – 10.167.179.50 | 10.167.179.51 |
| 78 | 10.167.179.52/30 | 10.167.179.53 – 10.167.179.54 | 10.167.179.55 |
| 79 | 10.167.179.56/30 | 10.167.179.57 – 10.167.179.58 | 10.167.179.59 |
| 80 | 10.167.179.60/30 | 10.167.179.61 – 10.167.179.62 | 10.167.179.63 |
| 81 | 10.167.179.64/30 | 10.167.179.65 – 10.167.179.66 | 10.167.179.67 |
| 82 | 10.167.179.68/30 | 10.167.179.69 – 10.167.179.70 | 10.167.179.71 |
| 83 | 10.167.179.72/30 | 10.167.179.73 – 10.167.179.74 | 10.167.179.75 |
| 84 | 10.167.179.76/30 | 10.167.179.77 – 10.167.179.78 | 10.167.179.79 |
| 85 | 10.167.179.80/30 | 10.167.179.81 – 10.167.179.82 | 10.167.179.83 |
| 86 | 10.167.179.84/30 | 10.167.179.85 – 10.167.179.86 | 10.167.179.87 |
| 87 | 10.167.179.88/30 | 10.167.179.89 – 10.167.179.90 | 10.167.179.91 |
| 88 | 10.167.179.92/30 | 10.167.179.93 – 10.167.179.94 | 10.167.179.95 |
| 89 | 10.167.179.96/30 | 10.167.179.97 – 10.167.179.98 | 10.167.179.99 |
| 90 | 10.167.179.100/30 | 10.167.179.101 – 10.167.179.102 | 10.167.179.103 |
| 91 | 10.167.179.104/30 | 10.167.179.105 – 10.167.179.106 | 10.167.179.107 |
| 92 | 10.167.179.108/30 | 10.167.179.109 – 10.167.179.110 | 10.167.179.111 |
| 93 | 10.167.179.112/30 | 10.167.179.113 – 10.167.179.114 | 10.167.179.115 |
| 94 | 10.167.179.116/30 | 10.167.179.117 – 10.167.179.118 | 10.167.179.119 |
| 95 | 10.167.179.120/30 | 10.167.179.121 – 10.167.179.122 | 10.167.179.123 |
| 96 | 10.167.179.124/30 | 10.167.179.125 – 10.167.179.126 | 10.167.179.127 |
| 97 | 10.167.179.128/30 | 10.167.179.129 – 10.167.179.130 | 10.167.179.131 |
| 98 | 10.167.179.132/30 | 10.167.179.133 – 10.167.179.134 | 10.167.179.135 |
| 99 | 10.167.179.136/30 | 10.167.179.137 – 10.167.179.138 | 10.167.179.139 |
| 100 | 10.167.179.140/30 | 10.167.179.141 – 10.167.179.142 | 10.167.179.143 |
| 101 | 10.167.179.144/30 | 10.167.179.145 – 10.167.179.146 | 10.167.179.147 |
| 102 | 10.167.179.148/30 | 10.167.179.149 – 10.167.179.150 | 10.167.179.151 |
| 103 | 10.167.179.152/30 | 10.167.179.153 – 10.167.179.154 | 10.167.179.155 |
| 104 | 10.167.179.156/30 | 10.167.179.157 – 10.167.179.158 | 10.167.179.159 |
| 105 | 10.167.179.160/30 | 10.167.179.161 – 10.167.179.162 | 10.167.179.163 |
| 106 | 10.167.179.164/30 | 10.167.179.165 – 10.167.179.166 | 10.167.179.167 |
| 107 | 10.167.179.168/30 | 10.167.179.169 – 10.167.179.170 | 10.167.179.171 |
| 108 | 10.167.179.172/30 | 10.167.179.173 – 10.167.179.174 | 10.167.179.175 |
| 109 | 10.167.179.176/30 | 10.167.179.177 – 10.167.179.178 | 10.167.179.179 |
| 110 | 10.167.179.180/30 | 10.167.179.181 – 10.167.179.182 | 10.167.179.183 |
| 111 | 10.167.179.184/30 | 10.167.179.185 – 10.167.179.186 | 10.167.179.187 |
| 112 | 10.167.179.188/30 | 10.167.179.189 – 10.167.179.190 | 10.167.179.191 |
| 113 | 10.167.179.192/30 | 10.167.179.193 – 10.167.179.194 | 10.167.179.195 |
| 114 | 10.167.179.196/30 | 10.167.179.197 – 10.167.179.198 | 10.167.179.199 |
| 115 | 10.167.179.200/30 | 10.167.179.201 – 10.167.179.202 | 10.167.179.203 |
| 116 | 10.167.179.204/30 | 10.167.179.205 – 10.167.179.206 | 10.167.179.207 |
| 117 | 10.167.179.208/30 | 10.167.179.209 – 10.167.179.210 | 10.167.179.211 |
| 118 | 10.167.179.212/30 | 10.167.179.213 – 10.167.179.214 | 10.167.179.215 |
| 119 | 10.167.179.216/30 | 10.167.179.217 – 10.167.179.218 | 10.167.179.219 |
| 120 | 10.167.179.220/30 | 10.167.179.221 – 10.167.179.222 | 10.167.179.223 |
| 121 | 10.167.179.224/30 | 10.167.179.225 – 10.167.179.226 | 10.167.179.227 |
| 122 | 10.167.179.228/30 | 10.167.179.229 – 10.167.179.230 | 10.167.179.231 |
| 123 | 10.167.179.232/30 | 10.167.179.233 – 10.167.179.234 | 10.167.179.235 |
| 124 | 10.167.179.236/30 | 10.167.179.237 – 10.167.179.238 | 10.167.179.239 |
| 125 | 10.167.179.240/30 | 10.167.179.241 – 10.167.179.242 | 10.167.179.243 |
| 126 | 10.167.179.244/30 | 10.167.179.245 – 10.167.179.246 | 10.167.179.247 |
| 127 | 10.167.179.248/30 | 10.167.179.249 – 10.167.179.250 | 10.167.179.251 |
| 128 | 10.167.179.252/30 | 10.167.179.253 – 10.167.179.254 | 10.167.179.255 |
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.