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)10.167.248.0/23
network10.167.248.0/23
broadcast10.167.249.255
first host10.167.248.1
last host10.167.249.254
subnet mask255.255.254.0
wildcard0.0.1.255
addresses512
usable hosts510
classA
ipcalc 10.167.248.0/23
address00001010.10100111.11111000.00000000
subnet mask11111111.11111111.11111110.00000000
network00001010.10100111.11111000.00000000
broadcast00001010.10100111.11111001.11111111
green = network part, grey = host part
hex0x0aa7f800
decimal178780160
reverse dns0.248.167.10.in-addr.arpa
ipv4-mapped::ffff:aa7:f800
/23 split into /30 · 128 subnets
close ×| # | network | host range | broadcast |
|---|---|---|---|
| 1 | 10.167.248.0/30 | 10.167.248.1 – 10.167.248.2 | 10.167.248.3 |
| 2 | 10.167.248.4/30 | 10.167.248.5 – 10.167.248.6 | 10.167.248.7 |
| 3 | 10.167.248.8/30 | 10.167.248.9 – 10.167.248.10 | 10.167.248.11 |
| 4 | 10.167.248.12/30 | 10.167.248.13 – 10.167.248.14 | 10.167.248.15 |
| 5 | 10.167.248.16/30 | 10.167.248.17 – 10.167.248.18 | 10.167.248.19 |
| 6 | 10.167.248.20/30 | 10.167.248.21 – 10.167.248.22 | 10.167.248.23 |
| 7 | 10.167.248.24/30 | 10.167.248.25 – 10.167.248.26 | 10.167.248.27 |
| 8 | 10.167.248.28/30 | 10.167.248.29 – 10.167.248.30 | 10.167.248.31 |
| 9 | 10.167.248.32/30 | 10.167.248.33 – 10.167.248.34 | 10.167.248.35 |
| 10 | 10.167.248.36/30 | 10.167.248.37 – 10.167.248.38 | 10.167.248.39 |
| 11 | 10.167.248.40/30 | 10.167.248.41 – 10.167.248.42 | 10.167.248.43 |
| 12 | 10.167.248.44/30 | 10.167.248.45 – 10.167.248.46 | 10.167.248.47 |
| 13 | 10.167.248.48/30 | 10.167.248.49 – 10.167.248.50 | 10.167.248.51 |
| 14 | 10.167.248.52/30 | 10.167.248.53 – 10.167.248.54 | 10.167.248.55 |
| 15 | 10.167.248.56/30 | 10.167.248.57 – 10.167.248.58 | 10.167.248.59 |
| 16 | 10.167.248.60/30 | 10.167.248.61 – 10.167.248.62 | 10.167.248.63 |
| 17 | 10.167.248.64/30 | 10.167.248.65 – 10.167.248.66 | 10.167.248.67 |
| 18 | 10.167.248.68/30 | 10.167.248.69 – 10.167.248.70 | 10.167.248.71 |
| 19 | 10.167.248.72/30 | 10.167.248.73 – 10.167.248.74 | 10.167.248.75 |
| 20 | 10.167.248.76/30 | 10.167.248.77 – 10.167.248.78 | 10.167.248.79 |
| 21 | 10.167.248.80/30 | 10.167.248.81 – 10.167.248.82 | 10.167.248.83 |
| 22 | 10.167.248.84/30 | 10.167.248.85 – 10.167.248.86 | 10.167.248.87 |
| 23 | 10.167.248.88/30 | 10.167.248.89 – 10.167.248.90 | 10.167.248.91 |
| 24 | 10.167.248.92/30 | 10.167.248.93 – 10.167.248.94 | 10.167.248.95 |
| 25 | 10.167.248.96/30 | 10.167.248.97 – 10.167.248.98 | 10.167.248.99 |
| 26 | 10.167.248.100/30 | 10.167.248.101 – 10.167.248.102 | 10.167.248.103 |
| 27 | 10.167.248.104/30 | 10.167.248.105 – 10.167.248.106 | 10.167.248.107 |
| 28 | 10.167.248.108/30 | 10.167.248.109 – 10.167.248.110 | 10.167.248.111 |
| 29 | 10.167.248.112/30 | 10.167.248.113 – 10.167.248.114 | 10.167.248.115 |
| 30 | 10.167.248.116/30 | 10.167.248.117 – 10.167.248.118 | 10.167.248.119 |
| 31 | 10.167.248.120/30 | 10.167.248.121 – 10.167.248.122 | 10.167.248.123 |
| 32 | 10.167.248.124/30 | 10.167.248.125 – 10.167.248.126 | 10.167.248.127 |
| 33 | 10.167.248.128/30 | 10.167.248.129 – 10.167.248.130 | 10.167.248.131 |
| 34 | 10.167.248.132/30 | 10.167.248.133 – 10.167.248.134 | 10.167.248.135 |
| 35 | 10.167.248.136/30 | 10.167.248.137 – 10.167.248.138 | 10.167.248.139 |
| 36 | 10.167.248.140/30 | 10.167.248.141 – 10.167.248.142 | 10.167.248.143 |
| 37 | 10.167.248.144/30 | 10.167.248.145 – 10.167.248.146 | 10.167.248.147 |
| 38 | 10.167.248.148/30 | 10.167.248.149 – 10.167.248.150 | 10.167.248.151 |
| 39 | 10.167.248.152/30 | 10.167.248.153 – 10.167.248.154 | 10.167.248.155 |
| 40 | 10.167.248.156/30 | 10.167.248.157 – 10.167.248.158 | 10.167.248.159 |
| 41 | 10.167.248.160/30 | 10.167.248.161 – 10.167.248.162 | 10.167.248.163 |
| 42 | 10.167.248.164/30 | 10.167.248.165 – 10.167.248.166 | 10.167.248.167 |
| 43 | 10.167.248.168/30 | 10.167.248.169 – 10.167.248.170 | 10.167.248.171 |
| 44 | 10.167.248.172/30 | 10.167.248.173 – 10.167.248.174 | 10.167.248.175 |
| 45 | 10.167.248.176/30 | 10.167.248.177 – 10.167.248.178 | 10.167.248.179 |
| 46 | 10.167.248.180/30 | 10.167.248.181 – 10.167.248.182 | 10.167.248.183 |
| 47 | 10.167.248.184/30 | 10.167.248.185 – 10.167.248.186 | 10.167.248.187 |
| 48 | 10.167.248.188/30 | 10.167.248.189 – 10.167.248.190 | 10.167.248.191 |
| 49 | 10.167.248.192/30 | 10.167.248.193 – 10.167.248.194 | 10.167.248.195 |
| 50 | 10.167.248.196/30 | 10.167.248.197 – 10.167.248.198 | 10.167.248.199 |
| 51 | 10.167.248.200/30 | 10.167.248.201 – 10.167.248.202 | 10.167.248.203 |
| 52 | 10.167.248.204/30 | 10.167.248.205 – 10.167.248.206 | 10.167.248.207 |
| 53 | 10.167.248.208/30 | 10.167.248.209 – 10.167.248.210 | 10.167.248.211 |
| 54 | 10.167.248.212/30 | 10.167.248.213 – 10.167.248.214 | 10.167.248.215 |
| 55 | 10.167.248.216/30 | 10.167.248.217 – 10.167.248.218 | 10.167.248.219 |
| 56 | 10.167.248.220/30 | 10.167.248.221 – 10.167.248.222 | 10.167.248.223 |
| 57 | 10.167.248.224/30 | 10.167.248.225 – 10.167.248.226 | 10.167.248.227 |
| 58 | 10.167.248.228/30 | 10.167.248.229 – 10.167.248.230 | 10.167.248.231 |
| 59 | 10.167.248.232/30 | 10.167.248.233 – 10.167.248.234 | 10.167.248.235 |
| 60 | 10.167.248.236/30 | 10.167.248.237 – 10.167.248.238 | 10.167.248.239 |
| 61 | 10.167.248.240/30 | 10.167.248.241 – 10.167.248.242 | 10.167.248.243 |
| 62 | 10.167.248.244/30 | 10.167.248.245 – 10.167.248.246 | 10.167.248.247 |
| 63 | 10.167.248.248/30 | 10.167.248.249 – 10.167.248.250 | 10.167.248.251 |
| 64 | 10.167.248.252/30 | 10.167.248.253 – 10.167.248.254 | 10.167.248.255 |
| 65 | 10.167.249.0/30 | 10.167.249.1 – 10.167.249.2 | 10.167.249.3 |
| 66 | 10.167.249.4/30 | 10.167.249.5 – 10.167.249.6 | 10.167.249.7 |
| 67 | 10.167.249.8/30 | 10.167.249.9 – 10.167.249.10 | 10.167.249.11 |
| 68 | 10.167.249.12/30 | 10.167.249.13 – 10.167.249.14 | 10.167.249.15 |
| 69 | 10.167.249.16/30 | 10.167.249.17 – 10.167.249.18 | 10.167.249.19 |
| 70 | 10.167.249.20/30 | 10.167.249.21 – 10.167.249.22 | 10.167.249.23 |
| 71 | 10.167.249.24/30 | 10.167.249.25 – 10.167.249.26 | 10.167.249.27 |
| 72 | 10.167.249.28/30 | 10.167.249.29 – 10.167.249.30 | 10.167.249.31 |
| 73 | 10.167.249.32/30 | 10.167.249.33 – 10.167.249.34 | 10.167.249.35 |
| 74 | 10.167.249.36/30 | 10.167.249.37 – 10.167.249.38 | 10.167.249.39 |
| 75 | 10.167.249.40/30 | 10.167.249.41 – 10.167.249.42 | 10.167.249.43 |
| 76 | 10.167.249.44/30 | 10.167.249.45 – 10.167.249.46 | 10.167.249.47 |
| 77 | 10.167.249.48/30 | 10.167.249.49 – 10.167.249.50 | 10.167.249.51 |
| 78 | 10.167.249.52/30 | 10.167.249.53 – 10.167.249.54 | 10.167.249.55 |
| 79 | 10.167.249.56/30 | 10.167.249.57 – 10.167.249.58 | 10.167.249.59 |
| 80 | 10.167.249.60/30 | 10.167.249.61 – 10.167.249.62 | 10.167.249.63 |
| 81 | 10.167.249.64/30 | 10.167.249.65 – 10.167.249.66 | 10.167.249.67 |
| 82 | 10.167.249.68/30 | 10.167.249.69 – 10.167.249.70 | 10.167.249.71 |
| 83 | 10.167.249.72/30 | 10.167.249.73 – 10.167.249.74 | 10.167.249.75 |
| 84 | 10.167.249.76/30 | 10.167.249.77 – 10.167.249.78 | 10.167.249.79 |
| 85 | 10.167.249.80/30 | 10.167.249.81 – 10.167.249.82 | 10.167.249.83 |
| 86 | 10.167.249.84/30 | 10.167.249.85 – 10.167.249.86 | 10.167.249.87 |
| 87 | 10.167.249.88/30 | 10.167.249.89 – 10.167.249.90 | 10.167.249.91 |
| 88 | 10.167.249.92/30 | 10.167.249.93 – 10.167.249.94 | 10.167.249.95 |
| 89 | 10.167.249.96/30 | 10.167.249.97 – 10.167.249.98 | 10.167.249.99 |
| 90 | 10.167.249.100/30 | 10.167.249.101 – 10.167.249.102 | 10.167.249.103 |
| 91 | 10.167.249.104/30 | 10.167.249.105 – 10.167.249.106 | 10.167.249.107 |
| 92 | 10.167.249.108/30 | 10.167.249.109 – 10.167.249.110 | 10.167.249.111 |
| 93 | 10.167.249.112/30 | 10.167.249.113 – 10.167.249.114 | 10.167.249.115 |
| 94 | 10.167.249.116/30 | 10.167.249.117 – 10.167.249.118 | 10.167.249.119 |
| 95 | 10.167.249.120/30 | 10.167.249.121 – 10.167.249.122 | 10.167.249.123 |
| 96 | 10.167.249.124/30 | 10.167.249.125 – 10.167.249.126 | 10.167.249.127 |
| 97 | 10.167.249.128/30 | 10.167.249.129 – 10.167.249.130 | 10.167.249.131 |
| 98 | 10.167.249.132/30 | 10.167.249.133 – 10.167.249.134 | 10.167.249.135 |
| 99 | 10.167.249.136/30 | 10.167.249.137 – 10.167.249.138 | 10.167.249.139 |
| 100 | 10.167.249.140/30 | 10.167.249.141 – 10.167.249.142 | 10.167.249.143 |
| 101 | 10.167.249.144/30 | 10.167.249.145 – 10.167.249.146 | 10.167.249.147 |
| 102 | 10.167.249.148/30 | 10.167.249.149 – 10.167.249.150 | 10.167.249.151 |
| 103 | 10.167.249.152/30 | 10.167.249.153 – 10.167.249.154 | 10.167.249.155 |
| 104 | 10.167.249.156/30 | 10.167.249.157 – 10.167.249.158 | 10.167.249.159 |
| 105 | 10.167.249.160/30 | 10.167.249.161 – 10.167.249.162 | 10.167.249.163 |
| 106 | 10.167.249.164/30 | 10.167.249.165 – 10.167.249.166 | 10.167.249.167 |
| 107 | 10.167.249.168/30 | 10.167.249.169 – 10.167.249.170 | 10.167.249.171 |
| 108 | 10.167.249.172/30 | 10.167.249.173 – 10.167.249.174 | 10.167.249.175 |
| 109 | 10.167.249.176/30 | 10.167.249.177 – 10.167.249.178 | 10.167.249.179 |
| 110 | 10.167.249.180/30 | 10.167.249.181 – 10.167.249.182 | 10.167.249.183 |
| 111 | 10.167.249.184/30 | 10.167.249.185 – 10.167.249.186 | 10.167.249.187 |
| 112 | 10.167.249.188/30 | 10.167.249.189 – 10.167.249.190 | 10.167.249.191 |
| 113 | 10.167.249.192/30 | 10.167.249.193 – 10.167.249.194 | 10.167.249.195 |
| 114 | 10.167.249.196/30 | 10.167.249.197 – 10.167.249.198 | 10.167.249.199 |
| 115 | 10.167.249.200/30 | 10.167.249.201 – 10.167.249.202 | 10.167.249.203 |
| 116 | 10.167.249.204/30 | 10.167.249.205 – 10.167.249.206 | 10.167.249.207 |
| 117 | 10.167.249.208/30 | 10.167.249.209 – 10.167.249.210 | 10.167.249.211 |
| 118 | 10.167.249.212/30 | 10.167.249.213 – 10.167.249.214 | 10.167.249.215 |
| 119 | 10.167.249.216/30 | 10.167.249.217 – 10.167.249.218 | 10.167.249.219 |
| 120 | 10.167.249.220/30 | 10.167.249.221 – 10.167.249.222 | 10.167.249.223 |
| 121 | 10.167.249.224/30 | 10.167.249.225 – 10.167.249.226 | 10.167.249.227 |
| 122 | 10.167.249.228/30 | 10.167.249.229 – 10.167.249.230 | 10.167.249.231 |
| 123 | 10.167.249.232/30 | 10.167.249.233 – 10.167.249.234 | 10.167.249.235 |
| 124 | 10.167.249.236/30 | 10.167.249.237 – 10.167.249.238 | 10.167.249.239 |
| 125 | 10.167.249.240/30 | 10.167.249.241 – 10.167.249.242 | 10.167.249.243 |
| 126 | 10.167.249.244/30 | 10.167.249.245 – 10.167.249.246 | 10.167.249.247 |
| 127 | 10.167.249.248/30 | 10.167.249.249 – 10.167.249.250 | 10.167.249.251 |
| 128 | 10.167.249.252/30 | 10.167.249.253 – 10.167.249.254 | 10.167.249.255 |
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.