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)10.131.202.0/24
network10.131.202.0/24
broadcast10.131.202.255
first host10.131.202.1
last host10.131.202.254
subnet mask255.255.255.0
wildcard0.0.0.255
addresses256
usable hosts254
classA
ipcalc 10.131.202.0/24
address00001010.10000011.11001010.00000000
subnet mask11111111.11111111.11111111.00000000
network00001010.10000011.11001010.00000000
broadcast00001010.10000011.11001010.11111111
green = network part, grey = host part
hex0x0a83ca00
decimal176409088
reverse dns0.202.131.10.in-addr.arpa
ipv4-mapped::ffff:a83:ca00
/24 split into /30 · 64 subnets
close ×| # | network | host range | broadcast |
|---|---|---|---|
| 1 | 10.131.202.0/30 | 10.131.202.1 – 10.131.202.2 | 10.131.202.3 |
| 2 | 10.131.202.4/30 | 10.131.202.5 – 10.131.202.6 | 10.131.202.7 |
| 3 | 10.131.202.8/30 | 10.131.202.9 – 10.131.202.10 | 10.131.202.11 |
| 4 | 10.131.202.12/30 | 10.131.202.13 – 10.131.202.14 | 10.131.202.15 |
| 5 | 10.131.202.16/30 | 10.131.202.17 – 10.131.202.18 | 10.131.202.19 |
| 6 | 10.131.202.20/30 | 10.131.202.21 – 10.131.202.22 | 10.131.202.23 |
| 7 | 10.131.202.24/30 | 10.131.202.25 – 10.131.202.26 | 10.131.202.27 |
| 8 | 10.131.202.28/30 | 10.131.202.29 – 10.131.202.30 | 10.131.202.31 |
| 9 | 10.131.202.32/30 | 10.131.202.33 – 10.131.202.34 | 10.131.202.35 |
| 10 | 10.131.202.36/30 | 10.131.202.37 – 10.131.202.38 | 10.131.202.39 |
| 11 | 10.131.202.40/30 | 10.131.202.41 – 10.131.202.42 | 10.131.202.43 |
| 12 | 10.131.202.44/30 | 10.131.202.45 – 10.131.202.46 | 10.131.202.47 |
| 13 | 10.131.202.48/30 | 10.131.202.49 – 10.131.202.50 | 10.131.202.51 |
| 14 | 10.131.202.52/30 | 10.131.202.53 – 10.131.202.54 | 10.131.202.55 |
| 15 | 10.131.202.56/30 | 10.131.202.57 – 10.131.202.58 | 10.131.202.59 |
| 16 | 10.131.202.60/30 | 10.131.202.61 – 10.131.202.62 | 10.131.202.63 |
| 17 | 10.131.202.64/30 | 10.131.202.65 – 10.131.202.66 | 10.131.202.67 |
| 18 | 10.131.202.68/30 | 10.131.202.69 – 10.131.202.70 | 10.131.202.71 |
| 19 | 10.131.202.72/30 | 10.131.202.73 – 10.131.202.74 | 10.131.202.75 |
| 20 | 10.131.202.76/30 | 10.131.202.77 – 10.131.202.78 | 10.131.202.79 |
| 21 | 10.131.202.80/30 | 10.131.202.81 – 10.131.202.82 | 10.131.202.83 |
| 22 | 10.131.202.84/30 | 10.131.202.85 – 10.131.202.86 | 10.131.202.87 |
| 23 | 10.131.202.88/30 | 10.131.202.89 – 10.131.202.90 | 10.131.202.91 |
| 24 | 10.131.202.92/30 | 10.131.202.93 – 10.131.202.94 | 10.131.202.95 |
| 25 | 10.131.202.96/30 | 10.131.202.97 – 10.131.202.98 | 10.131.202.99 |
| 26 | 10.131.202.100/30 | 10.131.202.101 – 10.131.202.102 | 10.131.202.103 |
| 27 | 10.131.202.104/30 | 10.131.202.105 – 10.131.202.106 | 10.131.202.107 |
| 28 | 10.131.202.108/30 | 10.131.202.109 – 10.131.202.110 | 10.131.202.111 |
| 29 | 10.131.202.112/30 | 10.131.202.113 – 10.131.202.114 | 10.131.202.115 |
| 30 | 10.131.202.116/30 | 10.131.202.117 – 10.131.202.118 | 10.131.202.119 |
| 31 | 10.131.202.120/30 | 10.131.202.121 – 10.131.202.122 | 10.131.202.123 |
| 32 | 10.131.202.124/30 | 10.131.202.125 – 10.131.202.126 | 10.131.202.127 |
| 33 | 10.131.202.128/30 | 10.131.202.129 – 10.131.202.130 | 10.131.202.131 |
| 34 | 10.131.202.132/30 | 10.131.202.133 – 10.131.202.134 | 10.131.202.135 |
| 35 | 10.131.202.136/30 | 10.131.202.137 – 10.131.202.138 | 10.131.202.139 |
| 36 | 10.131.202.140/30 | 10.131.202.141 – 10.131.202.142 | 10.131.202.143 |
| 37 | 10.131.202.144/30 | 10.131.202.145 – 10.131.202.146 | 10.131.202.147 |
| 38 | 10.131.202.148/30 | 10.131.202.149 – 10.131.202.150 | 10.131.202.151 |
| 39 | 10.131.202.152/30 | 10.131.202.153 – 10.131.202.154 | 10.131.202.155 |
| 40 | 10.131.202.156/30 | 10.131.202.157 – 10.131.202.158 | 10.131.202.159 |
| 41 | 10.131.202.160/30 | 10.131.202.161 – 10.131.202.162 | 10.131.202.163 |
| 42 | 10.131.202.164/30 | 10.131.202.165 – 10.131.202.166 | 10.131.202.167 |
| 43 | 10.131.202.168/30 | 10.131.202.169 – 10.131.202.170 | 10.131.202.171 |
| 44 | 10.131.202.172/30 | 10.131.202.173 – 10.131.202.174 | 10.131.202.175 |
| 45 | 10.131.202.176/30 | 10.131.202.177 – 10.131.202.178 | 10.131.202.179 |
| 46 | 10.131.202.180/30 | 10.131.202.181 – 10.131.202.182 | 10.131.202.183 |
| 47 | 10.131.202.184/30 | 10.131.202.185 – 10.131.202.186 | 10.131.202.187 |
| 48 | 10.131.202.188/30 | 10.131.202.189 – 10.131.202.190 | 10.131.202.191 |
| 49 | 10.131.202.192/30 | 10.131.202.193 – 10.131.202.194 | 10.131.202.195 |
| 50 | 10.131.202.196/30 | 10.131.202.197 – 10.131.202.198 | 10.131.202.199 |
| 51 | 10.131.202.200/30 | 10.131.202.201 – 10.131.202.202 | 10.131.202.203 |
| 52 | 10.131.202.204/30 | 10.131.202.205 – 10.131.202.206 | 10.131.202.207 |
| 53 | 10.131.202.208/30 | 10.131.202.209 – 10.131.202.210 | 10.131.202.211 |
| 54 | 10.131.202.212/30 | 10.131.202.213 – 10.131.202.214 | 10.131.202.215 |
| 55 | 10.131.202.216/30 | 10.131.202.217 – 10.131.202.218 | 10.131.202.219 |
| 56 | 10.131.202.220/30 | 10.131.202.221 – 10.131.202.222 | 10.131.202.223 |
| 57 | 10.131.202.224/30 | 10.131.202.225 – 10.131.202.226 | 10.131.202.227 |
| 58 | 10.131.202.228/30 | 10.131.202.229 – 10.131.202.230 | 10.131.202.231 |
| 59 | 10.131.202.232/30 | 10.131.202.233 – 10.131.202.234 | 10.131.202.235 |
| 60 | 10.131.202.236/30 | 10.131.202.237 – 10.131.202.238 | 10.131.202.239 |
| 61 | 10.131.202.240/30 | 10.131.202.241 – 10.131.202.242 | 10.131.202.243 |
| 62 | 10.131.202.244/30 | 10.131.202.245 – 10.131.202.246 | 10.131.202.247 |
| 63 | 10.131.202.248/30 | 10.131.202.249 – 10.131.202.250 | 10.131.202.251 |
| 64 | 10.131.202.252/30 | 10.131.202.253 – 10.131.202.254 | 10.131.202.255 |
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 /24 |
|---|---|---|---|---|
| /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 | - |
| /24 | 255.255.255.0 | 256 | 254 | 1 |
| /25 | 255.255.255.128 | 128 | 126 | 2 split → |
| /26 | 255.255.255.192 | 64 | 62 | 4 split → |
| /27 | 255.255.255.224 | 32 | 30 | 8 split → |
| /28 | 255.255.255.240 | 16 | 14 | 16 split → |
| /29 | 255.255.255.248 | 8 | 6 | 32 split → |
| /30 | 255.255.255.252 | 4 | 2 | 64 split → |
| /31 | 255.255.255.254 | 2 | 2 | 128 split → |
| /32 | 255.255.255.255 | 1 | 1 | 256 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.