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)10.64.96.0/23
network10.64.96.0/23
broadcast10.64.97.255
first host10.64.96.1
last host10.64.97.254
subnet mask255.255.254.0
wildcard0.0.1.255
addresses512
usable hosts510
classA
ipcalc 10.64.96.0/23
address00001010.01000000.01100000.00000000
subnet mask11111111.11111111.11111110.00000000
network00001010.01000000.01100000.00000000
broadcast00001010.01000000.01100001.11111111
green = network part, grey = host part
hex0x0a406000
decimal171991040
reverse dns0.96.64.10.in-addr.arpa
ipv4-mapped::ffff:a40:6000
/23 split into /30 · 128 subnets
close ×| # | network | host range | broadcast |
|---|---|---|---|
| 1 | 10.64.96.0/30 | 10.64.96.1 – 10.64.96.2 | 10.64.96.3 |
| 2 | 10.64.96.4/30 | 10.64.96.5 – 10.64.96.6 | 10.64.96.7 |
| 3 | 10.64.96.8/30 | 10.64.96.9 – 10.64.96.10 | 10.64.96.11 |
| 4 | 10.64.96.12/30 | 10.64.96.13 – 10.64.96.14 | 10.64.96.15 |
| 5 | 10.64.96.16/30 | 10.64.96.17 – 10.64.96.18 | 10.64.96.19 |
| 6 | 10.64.96.20/30 | 10.64.96.21 – 10.64.96.22 | 10.64.96.23 |
| 7 | 10.64.96.24/30 | 10.64.96.25 – 10.64.96.26 | 10.64.96.27 |
| 8 | 10.64.96.28/30 | 10.64.96.29 – 10.64.96.30 | 10.64.96.31 |
| 9 | 10.64.96.32/30 | 10.64.96.33 – 10.64.96.34 | 10.64.96.35 |
| 10 | 10.64.96.36/30 | 10.64.96.37 – 10.64.96.38 | 10.64.96.39 |
| 11 | 10.64.96.40/30 | 10.64.96.41 – 10.64.96.42 | 10.64.96.43 |
| 12 | 10.64.96.44/30 | 10.64.96.45 – 10.64.96.46 | 10.64.96.47 |
| 13 | 10.64.96.48/30 | 10.64.96.49 – 10.64.96.50 | 10.64.96.51 |
| 14 | 10.64.96.52/30 | 10.64.96.53 – 10.64.96.54 | 10.64.96.55 |
| 15 | 10.64.96.56/30 | 10.64.96.57 – 10.64.96.58 | 10.64.96.59 |
| 16 | 10.64.96.60/30 | 10.64.96.61 – 10.64.96.62 | 10.64.96.63 |
| 17 | 10.64.96.64/30 | 10.64.96.65 – 10.64.96.66 | 10.64.96.67 |
| 18 | 10.64.96.68/30 | 10.64.96.69 – 10.64.96.70 | 10.64.96.71 |
| 19 | 10.64.96.72/30 | 10.64.96.73 – 10.64.96.74 | 10.64.96.75 |
| 20 | 10.64.96.76/30 | 10.64.96.77 – 10.64.96.78 | 10.64.96.79 |
| 21 | 10.64.96.80/30 | 10.64.96.81 – 10.64.96.82 | 10.64.96.83 |
| 22 | 10.64.96.84/30 | 10.64.96.85 – 10.64.96.86 | 10.64.96.87 |
| 23 | 10.64.96.88/30 | 10.64.96.89 – 10.64.96.90 | 10.64.96.91 |
| 24 | 10.64.96.92/30 | 10.64.96.93 – 10.64.96.94 | 10.64.96.95 |
| 25 | 10.64.96.96/30 | 10.64.96.97 – 10.64.96.98 | 10.64.96.99 |
| 26 | 10.64.96.100/30 | 10.64.96.101 – 10.64.96.102 | 10.64.96.103 |
| 27 | 10.64.96.104/30 | 10.64.96.105 – 10.64.96.106 | 10.64.96.107 |
| 28 | 10.64.96.108/30 | 10.64.96.109 – 10.64.96.110 | 10.64.96.111 |
| 29 | 10.64.96.112/30 | 10.64.96.113 – 10.64.96.114 | 10.64.96.115 |
| 30 | 10.64.96.116/30 | 10.64.96.117 – 10.64.96.118 | 10.64.96.119 |
| 31 | 10.64.96.120/30 | 10.64.96.121 – 10.64.96.122 | 10.64.96.123 |
| 32 | 10.64.96.124/30 | 10.64.96.125 – 10.64.96.126 | 10.64.96.127 |
| 33 | 10.64.96.128/30 | 10.64.96.129 – 10.64.96.130 | 10.64.96.131 |
| 34 | 10.64.96.132/30 | 10.64.96.133 – 10.64.96.134 | 10.64.96.135 |
| 35 | 10.64.96.136/30 | 10.64.96.137 – 10.64.96.138 | 10.64.96.139 |
| 36 | 10.64.96.140/30 | 10.64.96.141 – 10.64.96.142 | 10.64.96.143 |
| 37 | 10.64.96.144/30 | 10.64.96.145 – 10.64.96.146 | 10.64.96.147 |
| 38 | 10.64.96.148/30 | 10.64.96.149 – 10.64.96.150 | 10.64.96.151 |
| 39 | 10.64.96.152/30 | 10.64.96.153 – 10.64.96.154 | 10.64.96.155 |
| 40 | 10.64.96.156/30 | 10.64.96.157 – 10.64.96.158 | 10.64.96.159 |
| 41 | 10.64.96.160/30 | 10.64.96.161 – 10.64.96.162 | 10.64.96.163 |
| 42 | 10.64.96.164/30 | 10.64.96.165 – 10.64.96.166 | 10.64.96.167 |
| 43 | 10.64.96.168/30 | 10.64.96.169 – 10.64.96.170 | 10.64.96.171 |
| 44 | 10.64.96.172/30 | 10.64.96.173 – 10.64.96.174 | 10.64.96.175 |
| 45 | 10.64.96.176/30 | 10.64.96.177 – 10.64.96.178 | 10.64.96.179 |
| 46 | 10.64.96.180/30 | 10.64.96.181 – 10.64.96.182 | 10.64.96.183 |
| 47 | 10.64.96.184/30 | 10.64.96.185 – 10.64.96.186 | 10.64.96.187 |
| 48 | 10.64.96.188/30 | 10.64.96.189 – 10.64.96.190 | 10.64.96.191 |
| 49 | 10.64.96.192/30 | 10.64.96.193 – 10.64.96.194 | 10.64.96.195 |
| 50 | 10.64.96.196/30 | 10.64.96.197 – 10.64.96.198 | 10.64.96.199 |
| 51 | 10.64.96.200/30 | 10.64.96.201 – 10.64.96.202 | 10.64.96.203 |
| 52 | 10.64.96.204/30 | 10.64.96.205 – 10.64.96.206 | 10.64.96.207 |
| 53 | 10.64.96.208/30 | 10.64.96.209 – 10.64.96.210 | 10.64.96.211 |
| 54 | 10.64.96.212/30 | 10.64.96.213 – 10.64.96.214 | 10.64.96.215 |
| 55 | 10.64.96.216/30 | 10.64.96.217 – 10.64.96.218 | 10.64.96.219 |
| 56 | 10.64.96.220/30 | 10.64.96.221 – 10.64.96.222 | 10.64.96.223 |
| 57 | 10.64.96.224/30 | 10.64.96.225 – 10.64.96.226 | 10.64.96.227 |
| 58 | 10.64.96.228/30 | 10.64.96.229 – 10.64.96.230 | 10.64.96.231 |
| 59 | 10.64.96.232/30 | 10.64.96.233 – 10.64.96.234 | 10.64.96.235 |
| 60 | 10.64.96.236/30 | 10.64.96.237 – 10.64.96.238 | 10.64.96.239 |
| 61 | 10.64.96.240/30 | 10.64.96.241 – 10.64.96.242 | 10.64.96.243 |
| 62 | 10.64.96.244/30 | 10.64.96.245 – 10.64.96.246 | 10.64.96.247 |
| 63 | 10.64.96.248/30 | 10.64.96.249 – 10.64.96.250 | 10.64.96.251 |
| 64 | 10.64.96.252/30 | 10.64.96.253 – 10.64.96.254 | 10.64.96.255 |
| 65 | 10.64.97.0/30 | 10.64.97.1 – 10.64.97.2 | 10.64.97.3 |
| 66 | 10.64.97.4/30 | 10.64.97.5 – 10.64.97.6 | 10.64.97.7 |
| 67 | 10.64.97.8/30 | 10.64.97.9 – 10.64.97.10 | 10.64.97.11 |
| 68 | 10.64.97.12/30 | 10.64.97.13 – 10.64.97.14 | 10.64.97.15 |
| 69 | 10.64.97.16/30 | 10.64.97.17 – 10.64.97.18 | 10.64.97.19 |
| 70 | 10.64.97.20/30 | 10.64.97.21 – 10.64.97.22 | 10.64.97.23 |
| 71 | 10.64.97.24/30 | 10.64.97.25 – 10.64.97.26 | 10.64.97.27 |
| 72 | 10.64.97.28/30 | 10.64.97.29 – 10.64.97.30 | 10.64.97.31 |
| 73 | 10.64.97.32/30 | 10.64.97.33 – 10.64.97.34 | 10.64.97.35 |
| 74 | 10.64.97.36/30 | 10.64.97.37 – 10.64.97.38 | 10.64.97.39 |
| 75 | 10.64.97.40/30 | 10.64.97.41 – 10.64.97.42 | 10.64.97.43 |
| 76 | 10.64.97.44/30 | 10.64.97.45 – 10.64.97.46 | 10.64.97.47 |
| 77 | 10.64.97.48/30 | 10.64.97.49 – 10.64.97.50 | 10.64.97.51 |
| 78 | 10.64.97.52/30 | 10.64.97.53 – 10.64.97.54 | 10.64.97.55 |
| 79 | 10.64.97.56/30 | 10.64.97.57 – 10.64.97.58 | 10.64.97.59 |
| 80 | 10.64.97.60/30 | 10.64.97.61 – 10.64.97.62 | 10.64.97.63 |
| 81 | 10.64.97.64/30 | 10.64.97.65 – 10.64.97.66 | 10.64.97.67 |
| 82 | 10.64.97.68/30 | 10.64.97.69 – 10.64.97.70 | 10.64.97.71 |
| 83 | 10.64.97.72/30 | 10.64.97.73 – 10.64.97.74 | 10.64.97.75 |
| 84 | 10.64.97.76/30 | 10.64.97.77 – 10.64.97.78 | 10.64.97.79 |
| 85 | 10.64.97.80/30 | 10.64.97.81 – 10.64.97.82 | 10.64.97.83 |
| 86 | 10.64.97.84/30 | 10.64.97.85 – 10.64.97.86 | 10.64.97.87 |
| 87 | 10.64.97.88/30 | 10.64.97.89 – 10.64.97.90 | 10.64.97.91 |
| 88 | 10.64.97.92/30 | 10.64.97.93 – 10.64.97.94 | 10.64.97.95 |
| 89 | 10.64.97.96/30 | 10.64.97.97 – 10.64.97.98 | 10.64.97.99 |
| 90 | 10.64.97.100/30 | 10.64.97.101 – 10.64.97.102 | 10.64.97.103 |
| 91 | 10.64.97.104/30 | 10.64.97.105 – 10.64.97.106 | 10.64.97.107 |
| 92 | 10.64.97.108/30 | 10.64.97.109 – 10.64.97.110 | 10.64.97.111 |
| 93 | 10.64.97.112/30 | 10.64.97.113 – 10.64.97.114 | 10.64.97.115 |
| 94 | 10.64.97.116/30 | 10.64.97.117 – 10.64.97.118 | 10.64.97.119 |
| 95 | 10.64.97.120/30 | 10.64.97.121 – 10.64.97.122 | 10.64.97.123 |
| 96 | 10.64.97.124/30 | 10.64.97.125 – 10.64.97.126 | 10.64.97.127 |
| 97 | 10.64.97.128/30 | 10.64.97.129 – 10.64.97.130 | 10.64.97.131 |
| 98 | 10.64.97.132/30 | 10.64.97.133 – 10.64.97.134 | 10.64.97.135 |
| 99 | 10.64.97.136/30 | 10.64.97.137 – 10.64.97.138 | 10.64.97.139 |
| 100 | 10.64.97.140/30 | 10.64.97.141 – 10.64.97.142 | 10.64.97.143 |
| 101 | 10.64.97.144/30 | 10.64.97.145 – 10.64.97.146 | 10.64.97.147 |
| 102 | 10.64.97.148/30 | 10.64.97.149 – 10.64.97.150 | 10.64.97.151 |
| 103 | 10.64.97.152/30 | 10.64.97.153 – 10.64.97.154 | 10.64.97.155 |
| 104 | 10.64.97.156/30 | 10.64.97.157 – 10.64.97.158 | 10.64.97.159 |
| 105 | 10.64.97.160/30 | 10.64.97.161 – 10.64.97.162 | 10.64.97.163 |
| 106 | 10.64.97.164/30 | 10.64.97.165 – 10.64.97.166 | 10.64.97.167 |
| 107 | 10.64.97.168/30 | 10.64.97.169 – 10.64.97.170 | 10.64.97.171 |
| 108 | 10.64.97.172/30 | 10.64.97.173 – 10.64.97.174 | 10.64.97.175 |
| 109 | 10.64.97.176/30 | 10.64.97.177 – 10.64.97.178 | 10.64.97.179 |
| 110 | 10.64.97.180/30 | 10.64.97.181 – 10.64.97.182 | 10.64.97.183 |
| 111 | 10.64.97.184/30 | 10.64.97.185 – 10.64.97.186 | 10.64.97.187 |
| 112 | 10.64.97.188/30 | 10.64.97.189 – 10.64.97.190 | 10.64.97.191 |
| 113 | 10.64.97.192/30 | 10.64.97.193 – 10.64.97.194 | 10.64.97.195 |
| 114 | 10.64.97.196/30 | 10.64.97.197 – 10.64.97.198 | 10.64.97.199 |
| 115 | 10.64.97.200/30 | 10.64.97.201 – 10.64.97.202 | 10.64.97.203 |
| 116 | 10.64.97.204/30 | 10.64.97.205 – 10.64.97.206 | 10.64.97.207 |
| 117 | 10.64.97.208/30 | 10.64.97.209 – 10.64.97.210 | 10.64.97.211 |
| 118 | 10.64.97.212/30 | 10.64.97.213 – 10.64.97.214 | 10.64.97.215 |
| 119 | 10.64.97.216/30 | 10.64.97.217 – 10.64.97.218 | 10.64.97.219 |
| 120 | 10.64.97.220/30 | 10.64.97.221 – 10.64.97.222 | 10.64.97.223 |
| 121 | 10.64.97.224/30 | 10.64.97.225 – 10.64.97.226 | 10.64.97.227 |
| 122 | 10.64.97.228/30 | 10.64.97.229 – 10.64.97.230 | 10.64.97.231 |
| 123 | 10.64.97.232/30 | 10.64.97.233 – 10.64.97.234 | 10.64.97.235 |
| 124 | 10.64.97.236/30 | 10.64.97.237 – 10.64.97.238 | 10.64.97.239 |
| 125 | 10.64.97.240/30 | 10.64.97.241 – 10.64.97.242 | 10.64.97.243 |
| 126 | 10.64.97.244/30 | 10.64.97.245 – 10.64.97.246 | 10.64.97.247 |
| 127 | 10.64.97.248/30 | 10.64.97.249 – 10.64.97.250 | 10.64.97.251 |
| 128 | 10.64.97.252/30 | 10.64.97.253 – 10.64.97.254 | 10.64.97.255 |
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.