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)10.64.52.0/23
network10.64.52.0/23
broadcast10.64.53.255
first host10.64.52.1
last host10.64.53.254
subnet mask255.255.254.0
wildcard0.0.1.255
addresses512
usable hosts510
classA
ipcalc 10.64.52.0/23
address00001010.01000000.00110100.00000000
subnet mask11111111.11111111.11111110.00000000
network00001010.01000000.00110100.00000000
broadcast00001010.01000000.00110101.11111111
green = network part, grey = host part
hex0x0a403400
decimal171979776
reverse dns0.52.64.10.in-addr.arpa
ipv4-mapped::ffff:a40:3400
/23 split into /30 · 128 subnets
close ×| # | network | host range | broadcast |
|---|---|---|---|
| 1 | 10.64.52.0/30 | 10.64.52.1 – 10.64.52.2 | 10.64.52.3 |
| 2 | 10.64.52.4/30 | 10.64.52.5 – 10.64.52.6 | 10.64.52.7 |
| 3 | 10.64.52.8/30 | 10.64.52.9 – 10.64.52.10 | 10.64.52.11 |
| 4 | 10.64.52.12/30 | 10.64.52.13 – 10.64.52.14 | 10.64.52.15 |
| 5 | 10.64.52.16/30 | 10.64.52.17 – 10.64.52.18 | 10.64.52.19 |
| 6 | 10.64.52.20/30 | 10.64.52.21 – 10.64.52.22 | 10.64.52.23 |
| 7 | 10.64.52.24/30 | 10.64.52.25 – 10.64.52.26 | 10.64.52.27 |
| 8 | 10.64.52.28/30 | 10.64.52.29 – 10.64.52.30 | 10.64.52.31 |
| 9 | 10.64.52.32/30 | 10.64.52.33 – 10.64.52.34 | 10.64.52.35 |
| 10 | 10.64.52.36/30 | 10.64.52.37 – 10.64.52.38 | 10.64.52.39 |
| 11 | 10.64.52.40/30 | 10.64.52.41 – 10.64.52.42 | 10.64.52.43 |
| 12 | 10.64.52.44/30 | 10.64.52.45 – 10.64.52.46 | 10.64.52.47 |
| 13 | 10.64.52.48/30 | 10.64.52.49 – 10.64.52.50 | 10.64.52.51 |
| 14 | 10.64.52.52/30 | 10.64.52.53 – 10.64.52.54 | 10.64.52.55 |
| 15 | 10.64.52.56/30 | 10.64.52.57 – 10.64.52.58 | 10.64.52.59 |
| 16 | 10.64.52.60/30 | 10.64.52.61 – 10.64.52.62 | 10.64.52.63 |
| 17 | 10.64.52.64/30 | 10.64.52.65 – 10.64.52.66 | 10.64.52.67 |
| 18 | 10.64.52.68/30 | 10.64.52.69 – 10.64.52.70 | 10.64.52.71 |
| 19 | 10.64.52.72/30 | 10.64.52.73 – 10.64.52.74 | 10.64.52.75 |
| 20 | 10.64.52.76/30 | 10.64.52.77 – 10.64.52.78 | 10.64.52.79 |
| 21 | 10.64.52.80/30 | 10.64.52.81 – 10.64.52.82 | 10.64.52.83 |
| 22 | 10.64.52.84/30 | 10.64.52.85 – 10.64.52.86 | 10.64.52.87 |
| 23 | 10.64.52.88/30 | 10.64.52.89 – 10.64.52.90 | 10.64.52.91 |
| 24 | 10.64.52.92/30 | 10.64.52.93 – 10.64.52.94 | 10.64.52.95 |
| 25 | 10.64.52.96/30 | 10.64.52.97 – 10.64.52.98 | 10.64.52.99 |
| 26 | 10.64.52.100/30 | 10.64.52.101 – 10.64.52.102 | 10.64.52.103 |
| 27 | 10.64.52.104/30 | 10.64.52.105 – 10.64.52.106 | 10.64.52.107 |
| 28 | 10.64.52.108/30 | 10.64.52.109 – 10.64.52.110 | 10.64.52.111 |
| 29 | 10.64.52.112/30 | 10.64.52.113 – 10.64.52.114 | 10.64.52.115 |
| 30 | 10.64.52.116/30 | 10.64.52.117 – 10.64.52.118 | 10.64.52.119 |
| 31 | 10.64.52.120/30 | 10.64.52.121 – 10.64.52.122 | 10.64.52.123 |
| 32 | 10.64.52.124/30 | 10.64.52.125 – 10.64.52.126 | 10.64.52.127 |
| 33 | 10.64.52.128/30 | 10.64.52.129 – 10.64.52.130 | 10.64.52.131 |
| 34 | 10.64.52.132/30 | 10.64.52.133 – 10.64.52.134 | 10.64.52.135 |
| 35 | 10.64.52.136/30 | 10.64.52.137 – 10.64.52.138 | 10.64.52.139 |
| 36 | 10.64.52.140/30 | 10.64.52.141 – 10.64.52.142 | 10.64.52.143 |
| 37 | 10.64.52.144/30 | 10.64.52.145 – 10.64.52.146 | 10.64.52.147 |
| 38 | 10.64.52.148/30 | 10.64.52.149 – 10.64.52.150 | 10.64.52.151 |
| 39 | 10.64.52.152/30 | 10.64.52.153 – 10.64.52.154 | 10.64.52.155 |
| 40 | 10.64.52.156/30 | 10.64.52.157 – 10.64.52.158 | 10.64.52.159 |
| 41 | 10.64.52.160/30 | 10.64.52.161 – 10.64.52.162 | 10.64.52.163 |
| 42 | 10.64.52.164/30 | 10.64.52.165 – 10.64.52.166 | 10.64.52.167 |
| 43 | 10.64.52.168/30 | 10.64.52.169 – 10.64.52.170 | 10.64.52.171 |
| 44 | 10.64.52.172/30 | 10.64.52.173 – 10.64.52.174 | 10.64.52.175 |
| 45 | 10.64.52.176/30 | 10.64.52.177 – 10.64.52.178 | 10.64.52.179 |
| 46 | 10.64.52.180/30 | 10.64.52.181 – 10.64.52.182 | 10.64.52.183 |
| 47 | 10.64.52.184/30 | 10.64.52.185 – 10.64.52.186 | 10.64.52.187 |
| 48 | 10.64.52.188/30 | 10.64.52.189 – 10.64.52.190 | 10.64.52.191 |
| 49 | 10.64.52.192/30 | 10.64.52.193 – 10.64.52.194 | 10.64.52.195 |
| 50 | 10.64.52.196/30 | 10.64.52.197 – 10.64.52.198 | 10.64.52.199 |
| 51 | 10.64.52.200/30 | 10.64.52.201 – 10.64.52.202 | 10.64.52.203 |
| 52 | 10.64.52.204/30 | 10.64.52.205 – 10.64.52.206 | 10.64.52.207 |
| 53 | 10.64.52.208/30 | 10.64.52.209 – 10.64.52.210 | 10.64.52.211 |
| 54 | 10.64.52.212/30 | 10.64.52.213 – 10.64.52.214 | 10.64.52.215 |
| 55 | 10.64.52.216/30 | 10.64.52.217 – 10.64.52.218 | 10.64.52.219 |
| 56 | 10.64.52.220/30 | 10.64.52.221 – 10.64.52.222 | 10.64.52.223 |
| 57 | 10.64.52.224/30 | 10.64.52.225 – 10.64.52.226 | 10.64.52.227 |
| 58 | 10.64.52.228/30 | 10.64.52.229 – 10.64.52.230 | 10.64.52.231 |
| 59 | 10.64.52.232/30 | 10.64.52.233 – 10.64.52.234 | 10.64.52.235 |
| 60 | 10.64.52.236/30 | 10.64.52.237 – 10.64.52.238 | 10.64.52.239 |
| 61 | 10.64.52.240/30 | 10.64.52.241 – 10.64.52.242 | 10.64.52.243 |
| 62 | 10.64.52.244/30 | 10.64.52.245 – 10.64.52.246 | 10.64.52.247 |
| 63 | 10.64.52.248/30 | 10.64.52.249 – 10.64.52.250 | 10.64.52.251 |
| 64 | 10.64.52.252/30 | 10.64.52.253 – 10.64.52.254 | 10.64.52.255 |
| 65 | 10.64.53.0/30 | 10.64.53.1 – 10.64.53.2 | 10.64.53.3 |
| 66 | 10.64.53.4/30 | 10.64.53.5 – 10.64.53.6 | 10.64.53.7 |
| 67 | 10.64.53.8/30 | 10.64.53.9 – 10.64.53.10 | 10.64.53.11 |
| 68 | 10.64.53.12/30 | 10.64.53.13 – 10.64.53.14 | 10.64.53.15 |
| 69 | 10.64.53.16/30 | 10.64.53.17 – 10.64.53.18 | 10.64.53.19 |
| 70 | 10.64.53.20/30 | 10.64.53.21 – 10.64.53.22 | 10.64.53.23 |
| 71 | 10.64.53.24/30 | 10.64.53.25 – 10.64.53.26 | 10.64.53.27 |
| 72 | 10.64.53.28/30 | 10.64.53.29 – 10.64.53.30 | 10.64.53.31 |
| 73 | 10.64.53.32/30 | 10.64.53.33 – 10.64.53.34 | 10.64.53.35 |
| 74 | 10.64.53.36/30 | 10.64.53.37 – 10.64.53.38 | 10.64.53.39 |
| 75 | 10.64.53.40/30 | 10.64.53.41 – 10.64.53.42 | 10.64.53.43 |
| 76 | 10.64.53.44/30 | 10.64.53.45 – 10.64.53.46 | 10.64.53.47 |
| 77 | 10.64.53.48/30 | 10.64.53.49 – 10.64.53.50 | 10.64.53.51 |
| 78 | 10.64.53.52/30 | 10.64.53.53 – 10.64.53.54 | 10.64.53.55 |
| 79 | 10.64.53.56/30 | 10.64.53.57 – 10.64.53.58 | 10.64.53.59 |
| 80 | 10.64.53.60/30 | 10.64.53.61 – 10.64.53.62 | 10.64.53.63 |
| 81 | 10.64.53.64/30 | 10.64.53.65 – 10.64.53.66 | 10.64.53.67 |
| 82 | 10.64.53.68/30 | 10.64.53.69 – 10.64.53.70 | 10.64.53.71 |
| 83 | 10.64.53.72/30 | 10.64.53.73 – 10.64.53.74 | 10.64.53.75 |
| 84 | 10.64.53.76/30 | 10.64.53.77 – 10.64.53.78 | 10.64.53.79 |
| 85 | 10.64.53.80/30 | 10.64.53.81 – 10.64.53.82 | 10.64.53.83 |
| 86 | 10.64.53.84/30 | 10.64.53.85 – 10.64.53.86 | 10.64.53.87 |
| 87 | 10.64.53.88/30 | 10.64.53.89 – 10.64.53.90 | 10.64.53.91 |
| 88 | 10.64.53.92/30 | 10.64.53.93 – 10.64.53.94 | 10.64.53.95 |
| 89 | 10.64.53.96/30 | 10.64.53.97 – 10.64.53.98 | 10.64.53.99 |
| 90 | 10.64.53.100/30 | 10.64.53.101 – 10.64.53.102 | 10.64.53.103 |
| 91 | 10.64.53.104/30 | 10.64.53.105 – 10.64.53.106 | 10.64.53.107 |
| 92 | 10.64.53.108/30 | 10.64.53.109 – 10.64.53.110 | 10.64.53.111 |
| 93 | 10.64.53.112/30 | 10.64.53.113 – 10.64.53.114 | 10.64.53.115 |
| 94 | 10.64.53.116/30 | 10.64.53.117 – 10.64.53.118 | 10.64.53.119 |
| 95 | 10.64.53.120/30 | 10.64.53.121 – 10.64.53.122 | 10.64.53.123 |
| 96 | 10.64.53.124/30 | 10.64.53.125 – 10.64.53.126 | 10.64.53.127 |
| 97 | 10.64.53.128/30 | 10.64.53.129 – 10.64.53.130 | 10.64.53.131 |
| 98 | 10.64.53.132/30 | 10.64.53.133 – 10.64.53.134 | 10.64.53.135 |
| 99 | 10.64.53.136/30 | 10.64.53.137 – 10.64.53.138 | 10.64.53.139 |
| 100 | 10.64.53.140/30 | 10.64.53.141 – 10.64.53.142 | 10.64.53.143 |
| 101 | 10.64.53.144/30 | 10.64.53.145 – 10.64.53.146 | 10.64.53.147 |
| 102 | 10.64.53.148/30 | 10.64.53.149 – 10.64.53.150 | 10.64.53.151 |
| 103 | 10.64.53.152/30 | 10.64.53.153 – 10.64.53.154 | 10.64.53.155 |
| 104 | 10.64.53.156/30 | 10.64.53.157 – 10.64.53.158 | 10.64.53.159 |
| 105 | 10.64.53.160/30 | 10.64.53.161 – 10.64.53.162 | 10.64.53.163 |
| 106 | 10.64.53.164/30 | 10.64.53.165 – 10.64.53.166 | 10.64.53.167 |
| 107 | 10.64.53.168/30 | 10.64.53.169 – 10.64.53.170 | 10.64.53.171 |
| 108 | 10.64.53.172/30 | 10.64.53.173 – 10.64.53.174 | 10.64.53.175 |
| 109 | 10.64.53.176/30 | 10.64.53.177 – 10.64.53.178 | 10.64.53.179 |
| 110 | 10.64.53.180/30 | 10.64.53.181 – 10.64.53.182 | 10.64.53.183 |
| 111 | 10.64.53.184/30 | 10.64.53.185 – 10.64.53.186 | 10.64.53.187 |
| 112 | 10.64.53.188/30 | 10.64.53.189 – 10.64.53.190 | 10.64.53.191 |
| 113 | 10.64.53.192/30 | 10.64.53.193 – 10.64.53.194 | 10.64.53.195 |
| 114 | 10.64.53.196/30 | 10.64.53.197 – 10.64.53.198 | 10.64.53.199 |
| 115 | 10.64.53.200/30 | 10.64.53.201 – 10.64.53.202 | 10.64.53.203 |
| 116 | 10.64.53.204/30 | 10.64.53.205 – 10.64.53.206 | 10.64.53.207 |
| 117 | 10.64.53.208/30 | 10.64.53.209 – 10.64.53.210 | 10.64.53.211 |
| 118 | 10.64.53.212/30 | 10.64.53.213 – 10.64.53.214 | 10.64.53.215 |
| 119 | 10.64.53.216/30 | 10.64.53.217 – 10.64.53.218 | 10.64.53.219 |
| 120 | 10.64.53.220/30 | 10.64.53.221 – 10.64.53.222 | 10.64.53.223 |
| 121 | 10.64.53.224/30 | 10.64.53.225 – 10.64.53.226 | 10.64.53.227 |
| 122 | 10.64.53.228/30 | 10.64.53.229 – 10.64.53.230 | 10.64.53.231 |
| 123 | 10.64.53.232/30 | 10.64.53.233 – 10.64.53.234 | 10.64.53.235 |
| 124 | 10.64.53.236/30 | 10.64.53.237 – 10.64.53.238 | 10.64.53.239 |
| 125 | 10.64.53.240/30 | 10.64.53.241 – 10.64.53.242 | 10.64.53.243 |
| 126 | 10.64.53.244/30 | 10.64.53.245 – 10.64.53.246 | 10.64.53.247 |
| 127 | 10.64.53.248/30 | 10.64.53.249 – 10.64.53.250 | 10.64.53.251 |
| 128 | 10.64.53.252/30 | 10.64.53.253 – 10.64.53.254 | 10.64.53.255 |
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.