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)10.97.201.0/24
network10.97.201.0/24
broadcast10.97.201.255
first host10.97.201.1
last host10.97.201.254
subnet mask255.255.255.0
wildcard0.0.0.255
addresses256
usable hosts254
classA
ipcalc 10.97.201.0/24
address00001010.01100001.11001001.00000000
subnet mask11111111.11111111.11111111.00000000
network00001010.01100001.11001001.00000000
broadcast00001010.01100001.11001001.11111111
green = network part, grey = host part
hex0x0a61c900
decimal174180608
reverse dns0.201.97.10.in-addr.arpa
ipv4-mapped::ffff:a61:c900
/24 split into /30 · 64 subnets
close ×| # | network | host range | broadcast |
|---|---|---|---|
| 1 | 10.97.201.0/30 | 10.97.201.1 – 10.97.201.2 | 10.97.201.3 |
| 2 | 10.97.201.4/30 | 10.97.201.5 – 10.97.201.6 | 10.97.201.7 |
| 3 | 10.97.201.8/30 | 10.97.201.9 – 10.97.201.10 | 10.97.201.11 |
| 4 | 10.97.201.12/30 | 10.97.201.13 – 10.97.201.14 | 10.97.201.15 |
| 5 | 10.97.201.16/30 | 10.97.201.17 – 10.97.201.18 | 10.97.201.19 |
| 6 | 10.97.201.20/30 | 10.97.201.21 – 10.97.201.22 | 10.97.201.23 |
| 7 | 10.97.201.24/30 | 10.97.201.25 – 10.97.201.26 | 10.97.201.27 |
| 8 | 10.97.201.28/30 | 10.97.201.29 – 10.97.201.30 | 10.97.201.31 |
| 9 | 10.97.201.32/30 | 10.97.201.33 – 10.97.201.34 | 10.97.201.35 |
| 10 | 10.97.201.36/30 | 10.97.201.37 – 10.97.201.38 | 10.97.201.39 |
| 11 | 10.97.201.40/30 | 10.97.201.41 – 10.97.201.42 | 10.97.201.43 |
| 12 | 10.97.201.44/30 | 10.97.201.45 – 10.97.201.46 | 10.97.201.47 |
| 13 | 10.97.201.48/30 | 10.97.201.49 – 10.97.201.50 | 10.97.201.51 |
| 14 | 10.97.201.52/30 | 10.97.201.53 – 10.97.201.54 | 10.97.201.55 |
| 15 | 10.97.201.56/30 | 10.97.201.57 – 10.97.201.58 | 10.97.201.59 |
| 16 | 10.97.201.60/30 | 10.97.201.61 – 10.97.201.62 | 10.97.201.63 |
| 17 | 10.97.201.64/30 | 10.97.201.65 – 10.97.201.66 | 10.97.201.67 |
| 18 | 10.97.201.68/30 | 10.97.201.69 – 10.97.201.70 | 10.97.201.71 |
| 19 | 10.97.201.72/30 | 10.97.201.73 – 10.97.201.74 | 10.97.201.75 |
| 20 | 10.97.201.76/30 | 10.97.201.77 – 10.97.201.78 | 10.97.201.79 |
| 21 | 10.97.201.80/30 | 10.97.201.81 – 10.97.201.82 | 10.97.201.83 |
| 22 | 10.97.201.84/30 | 10.97.201.85 – 10.97.201.86 | 10.97.201.87 |
| 23 | 10.97.201.88/30 | 10.97.201.89 – 10.97.201.90 | 10.97.201.91 |
| 24 | 10.97.201.92/30 | 10.97.201.93 – 10.97.201.94 | 10.97.201.95 |
| 25 | 10.97.201.96/30 | 10.97.201.97 – 10.97.201.98 | 10.97.201.99 |
| 26 | 10.97.201.100/30 | 10.97.201.101 – 10.97.201.102 | 10.97.201.103 |
| 27 | 10.97.201.104/30 | 10.97.201.105 – 10.97.201.106 | 10.97.201.107 |
| 28 | 10.97.201.108/30 | 10.97.201.109 – 10.97.201.110 | 10.97.201.111 |
| 29 | 10.97.201.112/30 | 10.97.201.113 – 10.97.201.114 | 10.97.201.115 |
| 30 | 10.97.201.116/30 | 10.97.201.117 – 10.97.201.118 | 10.97.201.119 |
| 31 | 10.97.201.120/30 | 10.97.201.121 – 10.97.201.122 | 10.97.201.123 |
| 32 | 10.97.201.124/30 | 10.97.201.125 – 10.97.201.126 | 10.97.201.127 |
| 33 | 10.97.201.128/30 | 10.97.201.129 – 10.97.201.130 | 10.97.201.131 |
| 34 | 10.97.201.132/30 | 10.97.201.133 – 10.97.201.134 | 10.97.201.135 |
| 35 | 10.97.201.136/30 | 10.97.201.137 – 10.97.201.138 | 10.97.201.139 |
| 36 | 10.97.201.140/30 | 10.97.201.141 – 10.97.201.142 | 10.97.201.143 |
| 37 | 10.97.201.144/30 | 10.97.201.145 – 10.97.201.146 | 10.97.201.147 |
| 38 | 10.97.201.148/30 | 10.97.201.149 – 10.97.201.150 | 10.97.201.151 |
| 39 | 10.97.201.152/30 | 10.97.201.153 – 10.97.201.154 | 10.97.201.155 |
| 40 | 10.97.201.156/30 | 10.97.201.157 – 10.97.201.158 | 10.97.201.159 |
| 41 | 10.97.201.160/30 | 10.97.201.161 – 10.97.201.162 | 10.97.201.163 |
| 42 | 10.97.201.164/30 | 10.97.201.165 – 10.97.201.166 | 10.97.201.167 |
| 43 | 10.97.201.168/30 | 10.97.201.169 – 10.97.201.170 | 10.97.201.171 |
| 44 | 10.97.201.172/30 | 10.97.201.173 – 10.97.201.174 | 10.97.201.175 |
| 45 | 10.97.201.176/30 | 10.97.201.177 – 10.97.201.178 | 10.97.201.179 |
| 46 | 10.97.201.180/30 | 10.97.201.181 – 10.97.201.182 | 10.97.201.183 |
| 47 | 10.97.201.184/30 | 10.97.201.185 – 10.97.201.186 | 10.97.201.187 |
| 48 | 10.97.201.188/30 | 10.97.201.189 – 10.97.201.190 | 10.97.201.191 |
| 49 | 10.97.201.192/30 | 10.97.201.193 – 10.97.201.194 | 10.97.201.195 |
| 50 | 10.97.201.196/30 | 10.97.201.197 – 10.97.201.198 | 10.97.201.199 |
| 51 | 10.97.201.200/30 | 10.97.201.201 – 10.97.201.202 | 10.97.201.203 |
| 52 | 10.97.201.204/30 | 10.97.201.205 – 10.97.201.206 | 10.97.201.207 |
| 53 | 10.97.201.208/30 | 10.97.201.209 – 10.97.201.210 | 10.97.201.211 |
| 54 | 10.97.201.212/30 | 10.97.201.213 – 10.97.201.214 | 10.97.201.215 |
| 55 | 10.97.201.216/30 | 10.97.201.217 – 10.97.201.218 | 10.97.201.219 |
| 56 | 10.97.201.220/30 | 10.97.201.221 – 10.97.201.222 | 10.97.201.223 |
| 57 | 10.97.201.224/30 | 10.97.201.225 – 10.97.201.226 | 10.97.201.227 |
| 58 | 10.97.201.228/30 | 10.97.201.229 – 10.97.201.230 | 10.97.201.231 |
| 59 | 10.97.201.232/30 | 10.97.201.233 – 10.97.201.234 | 10.97.201.235 |
| 60 | 10.97.201.236/30 | 10.97.201.237 – 10.97.201.238 | 10.97.201.239 |
| 61 | 10.97.201.240/30 | 10.97.201.241 – 10.97.201.242 | 10.97.201.243 |
| 62 | 10.97.201.244/30 | 10.97.201.245 – 10.97.201.246 | 10.97.201.247 |
| 63 | 10.97.201.248/30 | 10.97.201.249 – 10.97.201.250 | 10.97.201.251 |
| 64 | 10.97.201.252/30 | 10.97.201.253 – 10.97.201.254 | 10.97.201.255 |
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.