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)10.167.198.0/23
network10.167.198.0/23
broadcast10.167.199.255
first host10.167.198.1
last host10.167.199.254
subnet mask255.255.254.0
wildcard0.0.1.255
addresses512
usable hosts510
classA
ipcalc 10.167.198.0/23
address00001010.10100111.11000110.00000000
subnet mask11111111.11111111.11111110.00000000
network00001010.10100111.11000110.00000000
broadcast00001010.10100111.11000111.11111111
green = network part, grey = host part
hex0x0aa7c600
decimal178767360
reverse dns0.198.167.10.in-addr.arpa
ipv4-mapped::ffff:aa7:c600
/23 split into /30 · 128 subnets
close ×| # | network | host range | broadcast |
|---|---|---|---|
| 1 | 10.167.198.0/30 | 10.167.198.1 – 10.167.198.2 | 10.167.198.3 |
| 2 | 10.167.198.4/30 | 10.167.198.5 – 10.167.198.6 | 10.167.198.7 |
| 3 | 10.167.198.8/30 | 10.167.198.9 – 10.167.198.10 | 10.167.198.11 |
| 4 | 10.167.198.12/30 | 10.167.198.13 – 10.167.198.14 | 10.167.198.15 |
| 5 | 10.167.198.16/30 | 10.167.198.17 – 10.167.198.18 | 10.167.198.19 |
| 6 | 10.167.198.20/30 | 10.167.198.21 – 10.167.198.22 | 10.167.198.23 |
| 7 | 10.167.198.24/30 | 10.167.198.25 – 10.167.198.26 | 10.167.198.27 |
| 8 | 10.167.198.28/30 | 10.167.198.29 – 10.167.198.30 | 10.167.198.31 |
| 9 | 10.167.198.32/30 | 10.167.198.33 – 10.167.198.34 | 10.167.198.35 |
| 10 | 10.167.198.36/30 | 10.167.198.37 – 10.167.198.38 | 10.167.198.39 |
| 11 | 10.167.198.40/30 | 10.167.198.41 – 10.167.198.42 | 10.167.198.43 |
| 12 | 10.167.198.44/30 | 10.167.198.45 – 10.167.198.46 | 10.167.198.47 |
| 13 | 10.167.198.48/30 | 10.167.198.49 – 10.167.198.50 | 10.167.198.51 |
| 14 | 10.167.198.52/30 | 10.167.198.53 – 10.167.198.54 | 10.167.198.55 |
| 15 | 10.167.198.56/30 | 10.167.198.57 – 10.167.198.58 | 10.167.198.59 |
| 16 | 10.167.198.60/30 | 10.167.198.61 – 10.167.198.62 | 10.167.198.63 |
| 17 | 10.167.198.64/30 | 10.167.198.65 – 10.167.198.66 | 10.167.198.67 |
| 18 | 10.167.198.68/30 | 10.167.198.69 – 10.167.198.70 | 10.167.198.71 |
| 19 | 10.167.198.72/30 | 10.167.198.73 – 10.167.198.74 | 10.167.198.75 |
| 20 | 10.167.198.76/30 | 10.167.198.77 – 10.167.198.78 | 10.167.198.79 |
| 21 | 10.167.198.80/30 | 10.167.198.81 – 10.167.198.82 | 10.167.198.83 |
| 22 | 10.167.198.84/30 | 10.167.198.85 – 10.167.198.86 | 10.167.198.87 |
| 23 | 10.167.198.88/30 | 10.167.198.89 – 10.167.198.90 | 10.167.198.91 |
| 24 | 10.167.198.92/30 | 10.167.198.93 – 10.167.198.94 | 10.167.198.95 |
| 25 | 10.167.198.96/30 | 10.167.198.97 – 10.167.198.98 | 10.167.198.99 |
| 26 | 10.167.198.100/30 | 10.167.198.101 – 10.167.198.102 | 10.167.198.103 |
| 27 | 10.167.198.104/30 | 10.167.198.105 – 10.167.198.106 | 10.167.198.107 |
| 28 | 10.167.198.108/30 | 10.167.198.109 – 10.167.198.110 | 10.167.198.111 |
| 29 | 10.167.198.112/30 | 10.167.198.113 – 10.167.198.114 | 10.167.198.115 |
| 30 | 10.167.198.116/30 | 10.167.198.117 – 10.167.198.118 | 10.167.198.119 |
| 31 | 10.167.198.120/30 | 10.167.198.121 – 10.167.198.122 | 10.167.198.123 |
| 32 | 10.167.198.124/30 | 10.167.198.125 – 10.167.198.126 | 10.167.198.127 |
| 33 | 10.167.198.128/30 | 10.167.198.129 – 10.167.198.130 | 10.167.198.131 |
| 34 | 10.167.198.132/30 | 10.167.198.133 – 10.167.198.134 | 10.167.198.135 |
| 35 | 10.167.198.136/30 | 10.167.198.137 – 10.167.198.138 | 10.167.198.139 |
| 36 | 10.167.198.140/30 | 10.167.198.141 – 10.167.198.142 | 10.167.198.143 |
| 37 | 10.167.198.144/30 | 10.167.198.145 – 10.167.198.146 | 10.167.198.147 |
| 38 | 10.167.198.148/30 | 10.167.198.149 – 10.167.198.150 | 10.167.198.151 |
| 39 | 10.167.198.152/30 | 10.167.198.153 – 10.167.198.154 | 10.167.198.155 |
| 40 | 10.167.198.156/30 | 10.167.198.157 – 10.167.198.158 | 10.167.198.159 |
| 41 | 10.167.198.160/30 | 10.167.198.161 – 10.167.198.162 | 10.167.198.163 |
| 42 | 10.167.198.164/30 | 10.167.198.165 – 10.167.198.166 | 10.167.198.167 |
| 43 | 10.167.198.168/30 | 10.167.198.169 – 10.167.198.170 | 10.167.198.171 |
| 44 | 10.167.198.172/30 | 10.167.198.173 – 10.167.198.174 | 10.167.198.175 |
| 45 | 10.167.198.176/30 | 10.167.198.177 – 10.167.198.178 | 10.167.198.179 |
| 46 | 10.167.198.180/30 | 10.167.198.181 – 10.167.198.182 | 10.167.198.183 |
| 47 | 10.167.198.184/30 | 10.167.198.185 – 10.167.198.186 | 10.167.198.187 |
| 48 | 10.167.198.188/30 | 10.167.198.189 – 10.167.198.190 | 10.167.198.191 |
| 49 | 10.167.198.192/30 | 10.167.198.193 – 10.167.198.194 | 10.167.198.195 |
| 50 | 10.167.198.196/30 | 10.167.198.197 – 10.167.198.198 | 10.167.198.199 |
| 51 | 10.167.198.200/30 | 10.167.198.201 – 10.167.198.202 | 10.167.198.203 |
| 52 | 10.167.198.204/30 | 10.167.198.205 – 10.167.198.206 | 10.167.198.207 |
| 53 | 10.167.198.208/30 | 10.167.198.209 – 10.167.198.210 | 10.167.198.211 |
| 54 | 10.167.198.212/30 | 10.167.198.213 – 10.167.198.214 | 10.167.198.215 |
| 55 | 10.167.198.216/30 | 10.167.198.217 – 10.167.198.218 | 10.167.198.219 |
| 56 | 10.167.198.220/30 | 10.167.198.221 – 10.167.198.222 | 10.167.198.223 |
| 57 | 10.167.198.224/30 | 10.167.198.225 – 10.167.198.226 | 10.167.198.227 |
| 58 | 10.167.198.228/30 | 10.167.198.229 – 10.167.198.230 | 10.167.198.231 |
| 59 | 10.167.198.232/30 | 10.167.198.233 – 10.167.198.234 | 10.167.198.235 |
| 60 | 10.167.198.236/30 | 10.167.198.237 – 10.167.198.238 | 10.167.198.239 |
| 61 | 10.167.198.240/30 | 10.167.198.241 – 10.167.198.242 | 10.167.198.243 |
| 62 | 10.167.198.244/30 | 10.167.198.245 – 10.167.198.246 | 10.167.198.247 |
| 63 | 10.167.198.248/30 | 10.167.198.249 – 10.167.198.250 | 10.167.198.251 |
| 64 | 10.167.198.252/30 | 10.167.198.253 – 10.167.198.254 | 10.167.198.255 |
| 65 | 10.167.199.0/30 | 10.167.199.1 – 10.167.199.2 | 10.167.199.3 |
| 66 | 10.167.199.4/30 | 10.167.199.5 – 10.167.199.6 | 10.167.199.7 |
| 67 | 10.167.199.8/30 | 10.167.199.9 – 10.167.199.10 | 10.167.199.11 |
| 68 | 10.167.199.12/30 | 10.167.199.13 – 10.167.199.14 | 10.167.199.15 |
| 69 | 10.167.199.16/30 | 10.167.199.17 – 10.167.199.18 | 10.167.199.19 |
| 70 | 10.167.199.20/30 | 10.167.199.21 – 10.167.199.22 | 10.167.199.23 |
| 71 | 10.167.199.24/30 | 10.167.199.25 – 10.167.199.26 | 10.167.199.27 |
| 72 | 10.167.199.28/30 | 10.167.199.29 – 10.167.199.30 | 10.167.199.31 |
| 73 | 10.167.199.32/30 | 10.167.199.33 – 10.167.199.34 | 10.167.199.35 |
| 74 | 10.167.199.36/30 | 10.167.199.37 – 10.167.199.38 | 10.167.199.39 |
| 75 | 10.167.199.40/30 | 10.167.199.41 – 10.167.199.42 | 10.167.199.43 |
| 76 | 10.167.199.44/30 | 10.167.199.45 – 10.167.199.46 | 10.167.199.47 |
| 77 | 10.167.199.48/30 | 10.167.199.49 – 10.167.199.50 | 10.167.199.51 |
| 78 | 10.167.199.52/30 | 10.167.199.53 – 10.167.199.54 | 10.167.199.55 |
| 79 | 10.167.199.56/30 | 10.167.199.57 – 10.167.199.58 | 10.167.199.59 |
| 80 | 10.167.199.60/30 | 10.167.199.61 – 10.167.199.62 | 10.167.199.63 |
| 81 | 10.167.199.64/30 | 10.167.199.65 – 10.167.199.66 | 10.167.199.67 |
| 82 | 10.167.199.68/30 | 10.167.199.69 – 10.167.199.70 | 10.167.199.71 |
| 83 | 10.167.199.72/30 | 10.167.199.73 – 10.167.199.74 | 10.167.199.75 |
| 84 | 10.167.199.76/30 | 10.167.199.77 – 10.167.199.78 | 10.167.199.79 |
| 85 | 10.167.199.80/30 | 10.167.199.81 – 10.167.199.82 | 10.167.199.83 |
| 86 | 10.167.199.84/30 | 10.167.199.85 – 10.167.199.86 | 10.167.199.87 |
| 87 | 10.167.199.88/30 | 10.167.199.89 – 10.167.199.90 | 10.167.199.91 |
| 88 | 10.167.199.92/30 | 10.167.199.93 – 10.167.199.94 | 10.167.199.95 |
| 89 | 10.167.199.96/30 | 10.167.199.97 – 10.167.199.98 | 10.167.199.99 |
| 90 | 10.167.199.100/30 | 10.167.199.101 – 10.167.199.102 | 10.167.199.103 |
| 91 | 10.167.199.104/30 | 10.167.199.105 – 10.167.199.106 | 10.167.199.107 |
| 92 | 10.167.199.108/30 | 10.167.199.109 – 10.167.199.110 | 10.167.199.111 |
| 93 | 10.167.199.112/30 | 10.167.199.113 – 10.167.199.114 | 10.167.199.115 |
| 94 | 10.167.199.116/30 | 10.167.199.117 – 10.167.199.118 | 10.167.199.119 |
| 95 | 10.167.199.120/30 | 10.167.199.121 – 10.167.199.122 | 10.167.199.123 |
| 96 | 10.167.199.124/30 | 10.167.199.125 – 10.167.199.126 | 10.167.199.127 |
| 97 | 10.167.199.128/30 | 10.167.199.129 – 10.167.199.130 | 10.167.199.131 |
| 98 | 10.167.199.132/30 | 10.167.199.133 – 10.167.199.134 | 10.167.199.135 |
| 99 | 10.167.199.136/30 | 10.167.199.137 – 10.167.199.138 | 10.167.199.139 |
| 100 | 10.167.199.140/30 | 10.167.199.141 – 10.167.199.142 | 10.167.199.143 |
| 101 | 10.167.199.144/30 | 10.167.199.145 – 10.167.199.146 | 10.167.199.147 |
| 102 | 10.167.199.148/30 | 10.167.199.149 – 10.167.199.150 | 10.167.199.151 |
| 103 | 10.167.199.152/30 | 10.167.199.153 – 10.167.199.154 | 10.167.199.155 |
| 104 | 10.167.199.156/30 | 10.167.199.157 – 10.167.199.158 | 10.167.199.159 |
| 105 | 10.167.199.160/30 | 10.167.199.161 – 10.167.199.162 | 10.167.199.163 |
| 106 | 10.167.199.164/30 | 10.167.199.165 – 10.167.199.166 | 10.167.199.167 |
| 107 | 10.167.199.168/30 | 10.167.199.169 – 10.167.199.170 | 10.167.199.171 |
| 108 | 10.167.199.172/30 | 10.167.199.173 – 10.167.199.174 | 10.167.199.175 |
| 109 | 10.167.199.176/30 | 10.167.199.177 – 10.167.199.178 | 10.167.199.179 |
| 110 | 10.167.199.180/30 | 10.167.199.181 – 10.167.199.182 | 10.167.199.183 |
| 111 | 10.167.199.184/30 | 10.167.199.185 – 10.167.199.186 | 10.167.199.187 |
| 112 | 10.167.199.188/30 | 10.167.199.189 – 10.167.199.190 | 10.167.199.191 |
| 113 | 10.167.199.192/30 | 10.167.199.193 – 10.167.199.194 | 10.167.199.195 |
| 114 | 10.167.199.196/30 | 10.167.199.197 – 10.167.199.198 | 10.167.199.199 |
| 115 | 10.167.199.200/30 | 10.167.199.201 – 10.167.199.202 | 10.167.199.203 |
| 116 | 10.167.199.204/30 | 10.167.199.205 – 10.167.199.206 | 10.167.199.207 |
| 117 | 10.167.199.208/30 | 10.167.199.209 – 10.167.199.210 | 10.167.199.211 |
| 118 | 10.167.199.212/30 | 10.167.199.213 – 10.167.199.214 | 10.167.199.215 |
| 119 | 10.167.199.216/30 | 10.167.199.217 – 10.167.199.218 | 10.167.199.219 |
| 120 | 10.167.199.220/30 | 10.167.199.221 – 10.167.199.222 | 10.167.199.223 |
| 121 | 10.167.199.224/30 | 10.167.199.225 – 10.167.199.226 | 10.167.199.227 |
| 122 | 10.167.199.228/30 | 10.167.199.229 – 10.167.199.230 | 10.167.199.231 |
| 123 | 10.167.199.232/30 | 10.167.199.233 – 10.167.199.234 | 10.167.199.235 |
| 124 | 10.167.199.236/30 | 10.167.199.237 – 10.167.199.238 | 10.167.199.239 |
| 125 | 10.167.199.240/30 | 10.167.199.241 – 10.167.199.242 | 10.167.199.243 |
| 126 | 10.167.199.244/30 | 10.167.199.245 – 10.167.199.246 | 10.167.199.247 |
| 127 | 10.167.199.248/30 | 10.167.199.249 – 10.167.199.250 | 10.167.199.251 |
| 128 | 10.167.199.252/30 | 10.167.199.253 – 10.167.199.254 | 10.167.199.255 |
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.