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)10.97.0.0/23
network10.97.0.0/23
broadcast10.97.1.255
first host10.97.0.1
last host10.97.1.254
subnet mask255.255.254.0
wildcard0.0.1.255
addresses512
usable hosts510
classA
ipcalc 10.97.0.0/23
address00001010.01100001.00000000.00000000
subnet mask11111111.11111111.11111110.00000000
network00001010.01100001.00000000.00000000
broadcast00001010.01100001.00000001.11111111
green = network part, grey = host part
hex0x0a610000
decimal174129152
reverse dns0.0.97.10.in-addr.arpa
ipv4-mapped::ffff:a61:0
/23 split into /30 · 128 subnets
close ×| # | network | host range | broadcast |
|---|---|---|---|
| 1 | 10.97.0.0/30 | 10.97.0.1 – 10.97.0.2 | 10.97.0.3 |
| 2 | 10.97.0.4/30 | 10.97.0.5 – 10.97.0.6 | 10.97.0.7 |
| 3 | 10.97.0.8/30 | 10.97.0.9 – 10.97.0.10 | 10.97.0.11 |
| 4 | 10.97.0.12/30 | 10.97.0.13 – 10.97.0.14 | 10.97.0.15 |
| 5 | 10.97.0.16/30 | 10.97.0.17 – 10.97.0.18 | 10.97.0.19 |
| 6 | 10.97.0.20/30 | 10.97.0.21 – 10.97.0.22 | 10.97.0.23 |
| 7 | 10.97.0.24/30 | 10.97.0.25 – 10.97.0.26 | 10.97.0.27 |
| 8 | 10.97.0.28/30 | 10.97.0.29 – 10.97.0.30 | 10.97.0.31 |
| 9 | 10.97.0.32/30 | 10.97.0.33 – 10.97.0.34 | 10.97.0.35 |
| 10 | 10.97.0.36/30 | 10.97.0.37 – 10.97.0.38 | 10.97.0.39 |
| 11 | 10.97.0.40/30 | 10.97.0.41 – 10.97.0.42 | 10.97.0.43 |
| 12 | 10.97.0.44/30 | 10.97.0.45 – 10.97.0.46 | 10.97.0.47 |
| 13 | 10.97.0.48/30 | 10.97.0.49 – 10.97.0.50 | 10.97.0.51 |
| 14 | 10.97.0.52/30 | 10.97.0.53 – 10.97.0.54 | 10.97.0.55 |
| 15 | 10.97.0.56/30 | 10.97.0.57 – 10.97.0.58 | 10.97.0.59 |
| 16 | 10.97.0.60/30 | 10.97.0.61 – 10.97.0.62 | 10.97.0.63 |
| 17 | 10.97.0.64/30 | 10.97.0.65 – 10.97.0.66 | 10.97.0.67 |
| 18 | 10.97.0.68/30 | 10.97.0.69 – 10.97.0.70 | 10.97.0.71 |
| 19 | 10.97.0.72/30 | 10.97.0.73 – 10.97.0.74 | 10.97.0.75 |
| 20 | 10.97.0.76/30 | 10.97.0.77 – 10.97.0.78 | 10.97.0.79 |
| 21 | 10.97.0.80/30 | 10.97.0.81 – 10.97.0.82 | 10.97.0.83 |
| 22 | 10.97.0.84/30 | 10.97.0.85 – 10.97.0.86 | 10.97.0.87 |
| 23 | 10.97.0.88/30 | 10.97.0.89 – 10.97.0.90 | 10.97.0.91 |
| 24 | 10.97.0.92/30 | 10.97.0.93 – 10.97.0.94 | 10.97.0.95 |
| 25 | 10.97.0.96/30 | 10.97.0.97 – 10.97.0.98 | 10.97.0.99 |
| 26 | 10.97.0.100/30 | 10.97.0.101 – 10.97.0.102 | 10.97.0.103 |
| 27 | 10.97.0.104/30 | 10.97.0.105 – 10.97.0.106 | 10.97.0.107 |
| 28 | 10.97.0.108/30 | 10.97.0.109 – 10.97.0.110 | 10.97.0.111 |
| 29 | 10.97.0.112/30 | 10.97.0.113 – 10.97.0.114 | 10.97.0.115 |
| 30 | 10.97.0.116/30 | 10.97.0.117 – 10.97.0.118 | 10.97.0.119 |
| 31 | 10.97.0.120/30 | 10.97.0.121 – 10.97.0.122 | 10.97.0.123 |
| 32 | 10.97.0.124/30 | 10.97.0.125 – 10.97.0.126 | 10.97.0.127 |
| 33 | 10.97.0.128/30 | 10.97.0.129 – 10.97.0.130 | 10.97.0.131 |
| 34 | 10.97.0.132/30 | 10.97.0.133 – 10.97.0.134 | 10.97.0.135 |
| 35 | 10.97.0.136/30 | 10.97.0.137 – 10.97.0.138 | 10.97.0.139 |
| 36 | 10.97.0.140/30 | 10.97.0.141 – 10.97.0.142 | 10.97.0.143 |
| 37 | 10.97.0.144/30 | 10.97.0.145 – 10.97.0.146 | 10.97.0.147 |
| 38 | 10.97.0.148/30 | 10.97.0.149 – 10.97.0.150 | 10.97.0.151 |
| 39 | 10.97.0.152/30 | 10.97.0.153 – 10.97.0.154 | 10.97.0.155 |
| 40 | 10.97.0.156/30 | 10.97.0.157 – 10.97.0.158 | 10.97.0.159 |
| 41 | 10.97.0.160/30 | 10.97.0.161 – 10.97.0.162 | 10.97.0.163 |
| 42 | 10.97.0.164/30 | 10.97.0.165 – 10.97.0.166 | 10.97.0.167 |
| 43 | 10.97.0.168/30 | 10.97.0.169 – 10.97.0.170 | 10.97.0.171 |
| 44 | 10.97.0.172/30 | 10.97.0.173 – 10.97.0.174 | 10.97.0.175 |
| 45 | 10.97.0.176/30 | 10.97.0.177 – 10.97.0.178 | 10.97.0.179 |
| 46 | 10.97.0.180/30 | 10.97.0.181 – 10.97.0.182 | 10.97.0.183 |
| 47 | 10.97.0.184/30 | 10.97.0.185 – 10.97.0.186 | 10.97.0.187 |
| 48 | 10.97.0.188/30 | 10.97.0.189 – 10.97.0.190 | 10.97.0.191 |
| 49 | 10.97.0.192/30 | 10.97.0.193 – 10.97.0.194 | 10.97.0.195 |
| 50 | 10.97.0.196/30 | 10.97.0.197 – 10.97.0.198 | 10.97.0.199 |
| 51 | 10.97.0.200/30 | 10.97.0.201 – 10.97.0.202 | 10.97.0.203 |
| 52 | 10.97.0.204/30 | 10.97.0.205 – 10.97.0.206 | 10.97.0.207 |
| 53 | 10.97.0.208/30 | 10.97.0.209 – 10.97.0.210 | 10.97.0.211 |
| 54 | 10.97.0.212/30 | 10.97.0.213 – 10.97.0.214 | 10.97.0.215 |
| 55 | 10.97.0.216/30 | 10.97.0.217 – 10.97.0.218 | 10.97.0.219 |
| 56 | 10.97.0.220/30 | 10.97.0.221 – 10.97.0.222 | 10.97.0.223 |
| 57 | 10.97.0.224/30 | 10.97.0.225 – 10.97.0.226 | 10.97.0.227 |
| 58 | 10.97.0.228/30 | 10.97.0.229 – 10.97.0.230 | 10.97.0.231 |
| 59 | 10.97.0.232/30 | 10.97.0.233 – 10.97.0.234 | 10.97.0.235 |
| 60 | 10.97.0.236/30 | 10.97.0.237 – 10.97.0.238 | 10.97.0.239 |
| 61 | 10.97.0.240/30 | 10.97.0.241 – 10.97.0.242 | 10.97.0.243 |
| 62 | 10.97.0.244/30 | 10.97.0.245 – 10.97.0.246 | 10.97.0.247 |
| 63 | 10.97.0.248/30 | 10.97.0.249 – 10.97.0.250 | 10.97.0.251 |
| 64 | 10.97.0.252/30 | 10.97.0.253 – 10.97.0.254 | 10.97.0.255 |
| 65 | 10.97.1.0/30 | 10.97.1.1 – 10.97.1.2 | 10.97.1.3 |
| 66 | 10.97.1.4/30 | 10.97.1.5 – 10.97.1.6 | 10.97.1.7 |
| 67 | 10.97.1.8/30 | 10.97.1.9 – 10.97.1.10 | 10.97.1.11 |
| 68 | 10.97.1.12/30 | 10.97.1.13 – 10.97.1.14 | 10.97.1.15 |
| 69 | 10.97.1.16/30 | 10.97.1.17 – 10.97.1.18 | 10.97.1.19 |
| 70 | 10.97.1.20/30 | 10.97.1.21 – 10.97.1.22 | 10.97.1.23 |
| 71 | 10.97.1.24/30 | 10.97.1.25 – 10.97.1.26 | 10.97.1.27 |
| 72 | 10.97.1.28/30 | 10.97.1.29 – 10.97.1.30 | 10.97.1.31 |
| 73 | 10.97.1.32/30 | 10.97.1.33 – 10.97.1.34 | 10.97.1.35 |
| 74 | 10.97.1.36/30 | 10.97.1.37 – 10.97.1.38 | 10.97.1.39 |
| 75 | 10.97.1.40/30 | 10.97.1.41 – 10.97.1.42 | 10.97.1.43 |
| 76 | 10.97.1.44/30 | 10.97.1.45 – 10.97.1.46 | 10.97.1.47 |
| 77 | 10.97.1.48/30 | 10.97.1.49 – 10.97.1.50 | 10.97.1.51 |
| 78 | 10.97.1.52/30 | 10.97.1.53 – 10.97.1.54 | 10.97.1.55 |
| 79 | 10.97.1.56/30 | 10.97.1.57 – 10.97.1.58 | 10.97.1.59 |
| 80 | 10.97.1.60/30 | 10.97.1.61 – 10.97.1.62 | 10.97.1.63 |
| 81 | 10.97.1.64/30 | 10.97.1.65 – 10.97.1.66 | 10.97.1.67 |
| 82 | 10.97.1.68/30 | 10.97.1.69 – 10.97.1.70 | 10.97.1.71 |
| 83 | 10.97.1.72/30 | 10.97.1.73 – 10.97.1.74 | 10.97.1.75 |
| 84 | 10.97.1.76/30 | 10.97.1.77 – 10.97.1.78 | 10.97.1.79 |
| 85 | 10.97.1.80/30 | 10.97.1.81 – 10.97.1.82 | 10.97.1.83 |
| 86 | 10.97.1.84/30 | 10.97.1.85 – 10.97.1.86 | 10.97.1.87 |
| 87 | 10.97.1.88/30 | 10.97.1.89 – 10.97.1.90 | 10.97.1.91 |
| 88 | 10.97.1.92/30 | 10.97.1.93 – 10.97.1.94 | 10.97.1.95 |
| 89 | 10.97.1.96/30 | 10.97.1.97 – 10.97.1.98 | 10.97.1.99 |
| 90 | 10.97.1.100/30 | 10.97.1.101 – 10.97.1.102 | 10.97.1.103 |
| 91 | 10.97.1.104/30 | 10.97.1.105 – 10.97.1.106 | 10.97.1.107 |
| 92 | 10.97.1.108/30 | 10.97.1.109 – 10.97.1.110 | 10.97.1.111 |
| 93 | 10.97.1.112/30 | 10.97.1.113 – 10.97.1.114 | 10.97.1.115 |
| 94 | 10.97.1.116/30 | 10.97.1.117 – 10.97.1.118 | 10.97.1.119 |
| 95 | 10.97.1.120/30 | 10.97.1.121 – 10.97.1.122 | 10.97.1.123 |
| 96 | 10.97.1.124/30 | 10.97.1.125 – 10.97.1.126 | 10.97.1.127 |
| 97 | 10.97.1.128/30 | 10.97.1.129 – 10.97.1.130 | 10.97.1.131 |
| 98 | 10.97.1.132/30 | 10.97.1.133 – 10.97.1.134 | 10.97.1.135 |
| 99 | 10.97.1.136/30 | 10.97.1.137 – 10.97.1.138 | 10.97.1.139 |
| 100 | 10.97.1.140/30 | 10.97.1.141 – 10.97.1.142 | 10.97.1.143 |
| 101 | 10.97.1.144/30 | 10.97.1.145 – 10.97.1.146 | 10.97.1.147 |
| 102 | 10.97.1.148/30 | 10.97.1.149 – 10.97.1.150 | 10.97.1.151 |
| 103 | 10.97.1.152/30 | 10.97.1.153 – 10.97.1.154 | 10.97.1.155 |
| 104 | 10.97.1.156/30 | 10.97.1.157 – 10.97.1.158 | 10.97.1.159 |
| 105 | 10.97.1.160/30 | 10.97.1.161 – 10.97.1.162 | 10.97.1.163 |
| 106 | 10.97.1.164/30 | 10.97.1.165 – 10.97.1.166 | 10.97.1.167 |
| 107 | 10.97.1.168/30 | 10.97.1.169 – 10.97.1.170 | 10.97.1.171 |
| 108 | 10.97.1.172/30 | 10.97.1.173 – 10.97.1.174 | 10.97.1.175 |
| 109 | 10.97.1.176/30 | 10.97.1.177 – 10.97.1.178 | 10.97.1.179 |
| 110 | 10.97.1.180/30 | 10.97.1.181 – 10.97.1.182 | 10.97.1.183 |
| 111 | 10.97.1.184/30 | 10.97.1.185 – 10.97.1.186 | 10.97.1.187 |
| 112 | 10.97.1.188/30 | 10.97.1.189 – 10.97.1.190 | 10.97.1.191 |
| 113 | 10.97.1.192/30 | 10.97.1.193 – 10.97.1.194 | 10.97.1.195 |
| 114 | 10.97.1.196/30 | 10.97.1.197 – 10.97.1.198 | 10.97.1.199 |
| 115 | 10.97.1.200/30 | 10.97.1.201 – 10.97.1.202 | 10.97.1.203 |
| 116 | 10.97.1.204/30 | 10.97.1.205 – 10.97.1.206 | 10.97.1.207 |
| 117 | 10.97.1.208/30 | 10.97.1.209 – 10.97.1.210 | 10.97.1.211 |
| 118 | 10.97.1.212/30 | 10.97.1.213 – 10.97.1.214 | 10.97.1.215 |
| 119 | 10.97.1.216/30 | 10.97.1.217 – 10.97.1.218 | 10.97.1.219 |
| 120 | 10.97.1.220/30 | 10.97.1.221 – 10.97.1.222 | 10.97.1.223 |
| 121 | 10.97.1.224/30 | 10.97.1.225 – 10.97.1.226 | 10.97.1.227 |
| 122 | 10.97.1.228/30 | 10.97.1.229 – 10.97.1.230 | 10.97.1.231 |
| 123 | 10.97.1.232/30 | 10.97.1.233 – 10.97.1.234 | 10.97.1.235 |
| 124 | 10.97.1.236/30 | 10.97.1.237 – 10.97.1.238 | 10.97.1.239 |
| 125 | 10.97.1.240/30 | 10.97.1.241 – 10.97.1.242 | 10.97.1.243 |
| 126 | 10.97.1.244/30 | 10.97.1.245 – 10.97.1.246 | 10.97.1.247 |
| 127 | 10.97.1.248/30 | 10.97.1.249 – 10.97.1.250 | 10.97.1.251 |
| 128 | 10.97.1.252/30 | 10.97.1.253 – 10.97.1.254 | 10.97.1.255 |
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.