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)10.147.162.0/23
network10.147.162.0/23
broadcast10.147.163.255
first host10.147.162.1
last host10.147.163.254
subnet mask255.255.254.0
wildcard0.0.1.255
addresses512
usable hosts510
classA
ipcalc 10.147.162.0/23
address00001010.10010011.10100010.00000000
subnet mask11111111.11111111.11111110.00000000
network00001010.10010011.10100010.00000000
broadcast00001010.10010011.10100011.11111111
green = network part, grey = host part
hex0x0a93a200
decimal177447424
reverse dns0.162.147.10.in-addr.arpa
ipv4-mapped::ffff:a93:a200
/23 split into /29 · 64 subnets
close ×| # | network | host range | broadcast |
|---|---|---|---|
| 1 | 10.147.162.0/29 | 10.147.162.1 – 10.147.162.6 | 10.147.162.7 |
| 2 | 10.147.162.8/29 | 10.147.162.9 – 10.147.162.14 | 10.147.162.15 |
| 3 | 10.147.162.16/29 | 10.147.162.17 – 10.147.162.22 | 10.147.162.23 |
| 4 | 10.147.162.24/29 | 10.147.162.25 – 10.147.162.30 | 10.147.162.31 |
| 5 | 10.147.162.32/29 | 10.147.162.33 – 10.147.162.38 | 10.147.162.39 |
| 6 | 10.147.162.40/29 | 10.147.162.41 – 10.147.162.46 | 10.147.162.47 |
| 7 | 10.147.162.48/29 | 10.147.162.49 – 10.147.162.54 | 10.147.162.55 |
| 8 | 10.147.162.56/29 | 10.147.162.57 – 10.147.162.62 | 10.147.162.63 |
| 9 | 10.147.162.64/29 | 10.147.162.65 – 10.147.162.70 | 10.147.162.71 |
| 10 | 10.147.162.72/29 | 10.147.162.73 – 10.147.162.78 | 10.147.162.79 |
| 11 | 10.147.162.80/29 | 10.147.162.81 – 10.147.162.86 | 10.147.162.87 |
| 12 | 10.147.162.88/29 | 10.147.162.89 – 10.147.162.94 | 10.147.162.95 |
| 13 | 10.147.162.96/29 | 10.147.162.97 – 10.147.162.102 | 10.147.162.103 |
| 14 | 10.147.162.104/29 | 10.147.162.105 – 10.147.162.110 | 10.147.162.111 |
| 15 | 10.147.162.112/29 | 10.147.162.113 – 10.147.162.118 | 10.147.162.119 |
| 16 | 10.147.162.120/29 | 10.147.162.121 – 10.147.162.126 | 10.147.162.127 |
| 17 | 10.147.162.128/29 | 10.147.162.129 – 10.147.162.134 | 10.147.162.135 |
| 18 | 10.147.162.136/29 | 10.147.162.137 – 10.147.162.142 | 10.147.162.143 |
| 19 | 10.147.162.144/29 | 10.147.162.145 – 10.147.162.150 | 10.147.162.151 |
| 20 | 10.147.162.152/29 | 10.147.162.153 – 10.147.162.158 | 10.147.162.159 |
| 21 | 10.147.162.160/29 | 10.147.162.161 – 10.147.162.166 | 10.147.162.167 |
| 22 | 10.147.162.168/29 | 10.147.162.169 – 10.147.162.174 | 10.147.162.175 |
| 23 | 10.147.162.176/29 | 10.147.162.177 – 10.147.162.182 | 10.147.162.183 |
| 24 | 10.147.162.184/29 | 10.147.162.185 – 10.147.162.190 | 10.147.162.191 |
| 25 | 10.147.162.192/29 | 10.147.162.193 – 10.147.162.198 | 10.147.162.199 |
| 26 | 10.147.162.200/29 | 10.147.162.201 – 10.147.162.206 | 10.147.162.207 |
| 27 | 10.147.162.208/29 | 10.147.162.209 – 10.147.162.214 | 10.147.162.215 |
| 28 | 10.147.162.216/29 | 10.147.162.217 – 10.147.162.222 | 10.147.162.223 |
| 29 | 10.147.162.224/29 | 10.147.162.225 – 10.147.162.230 | 10.147.162.231 |
| 30 | 10.147.162.232/29 | 10.147.162.233 – 10.147.162.238 | 10.147.162.239 |
| 31 | 10.147.162.240/29 | 10.147.162.241 – 10.147.162.246 | 10.147.162.247 |
| 32 | 10.147.162.248/29 | 10.147.162.249 – 10.147.162.254 | 10.147.162.255 |
| 33 | 10.147.163.0/29 | 10.147.163.1 – 10.147.163.6 | 10.147.163.7 |
| 34 | 10.147.163.8/29 | 10.147.163.9 – 10.147.163.14 | 10.147.163.15 |
| 35 | 10.147.163.16/29 | 10.147.163.17 – 10.147.163.22 | 10.147.163.23 |
| 36 | 10.147.163.24/29 | 10.147.163.25 – 10.147.163.30 | 10.147.163.31 |
| 37 | 10.147.163.32/29 | 10.147.163.33 – 10.147.163.38 | 10.147.163.39 |
| 38 | 10.147.163.40/29 | 10.147.163.41 – 10.147.163.46 | 10.147.163.47 |
| 39 | 10.147.163.48/29 | 10.147.163.49 – 10.147.163.54 | 10.147.163.55 |
| 40 | 10.147.163.56/29 | 10.147.163.57 – 10.147.163.62 | 10.147.163.63 |
| 41 | 10.147.163.64/29 | 10.147.163.65 – 10.147.163.70 | 10.147.163.71 |
| 42 | 10.147.163.72/29 | 10.147.163.73 – 10.147.163.78 | 10.147.163.79 |
| 43 | 10.147.163.80/29 | 10.147.163.81 – 10.147.163.86 | 10.147.163.87 |
| 44 | 10.147.163.88/29 | 10.147.163.89 – 10.147.163.94 | 10.147.163.95 |
| 45 | 10.147.163.96/29 | 10.147.163.97 – 10.147.163.102 | 10.147.163.103 |
| 46 | 10.147.163.104/29 | 10.147.163.105 – 10.147.163.110 | 10.147.163.111 |
| 47 | 10.147.163.112/29 | 10.147.163.113 – 10.147.163.118 | 10.147.163.119 |
| 48 | 10.147.163.120/29 | 10.147.163.121 – 10.147.163.126 | 10.147.163.127 |
| 49 | 10.147.163.128/29 | 10.147.163.129 – 10.147.163.134 | 10.147.163.135 |
| 50 | 10.147.163.136/29 | 10.147.163.137 – 10.147.163.142 | 10.147.163.143 |
| 51 | 10.147.163.144/29 | 10.147.163.145 – 10.147.163.150 | 10.147.163.151 |
| 52 | 10.147.163.152/29 | 10.147.163.153 – 10.147.163.158 | 10.147.163.159 |
| 53 | 10.147.163.160/29 | 10.147.163.161 – 10.147.163.166 | 10.147.163.167 |
| 54 | 10.147.163.168/29 | 10.147.163.169 – 10.147.163.174 | 10.147.163.175 |
| 55 | 10.147.163.176/29 | 10.147.163.177 – 10.147.163.182 | 10.147.163.183 |
| 56 | 10.147.163.184/29 | 10.147.163.185 – 10.147.163.190 | 10.147.163.191 |
| 57 | 10.147.163.192/29 | 10.147.163.193 – 10.147.163.198 | 10.147.163.199 |
| 58 | 10.147.163.200/29 | 10.147.163.201 – 10.147.163.206 | 10.147.163.207 |
| 59 | 10.147.163.208/29 | 10.147.163.209 – 10.147.163.214 | 10.147.163.215 |
| 60 | 10.147.163.216/29 | 10.147.163.217 – 10.147.163.222 | 10.147.163.223 |
| 61 | 10.147.163.224/29 | 10.147.163.225 – 10.147.163.230 | 10.147.163.231 |
| 62 | 10.147.163.232/29 | 10.147.163.233 – 10.147.163.238 | 10.147.163.239 |
| 63 | 10.147.163.240/29 | 10.147.163.241 – 10.147.163.246 | 10.147.163.247 |
| 64 | 10.147.163.248/29 | 10.147.163.249 – 10.147.163.254 | 10.147.163.255 |
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.