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)10.26.26.0/23
network10.26.26.0/23
broadcast10.26.27.255
first host10.26.26.1
last host10.26.27.254
subnet mask255.255.254.0
wildcard0.0.1.255
addresses512
usable hosts510
classA
ipcalc 10.26.26.0/23
address00001010.00011010.00011010.00000000
subnet mask11111111.11111111.11111110.00000000
network00001010.00011010.00011010.00000000
broadcast00001010.00011010.00011011.11111111
green = network part, grey = host part
hex0x0a1a1a00
decimal169482752
reverse dns0.26.26.10.in-addr.arpa
ipv4-mapped::ffff:a1a:1a00
/23 split into /30 · 128 subnets
close ×| # | network | host range | broadcast |
|---|---|---|---|
| 1 | 10.26.26.0/30 | 10.26.26.1 – 10.26.26.2 | 10.26.26.3 |
| 2 | 10.26.26.4/30 | 10.26.26.5 – 10.26.26.6 | 10.26.26.7 |
| 3 | 10.26.26.8/30 | 10.26.26.9 – 10.26.26.10 | 10.26.26.11 |
| 4 | 10.26.26.12/30 | 10.26.26.13 – 10.26.26.14 | 10.26.26.15 |
| 5 | 10.26.26.16/30 | 10.26.26.17 – 10.26.26.18 | 10.26.26.19 |
| 6 | 10.26.26.20/30 | 10.26.26.21 – 10.26.26.22 | 10.26.26.23 |
| 7 | 10.26.26.24/30 | 10.26.26.25 – 10.26.26.26 | 10.26.26.27 |
| 8 | 10.26.26.28/30 | 10.26.26.29 – 10.26.26.30 | 10.26.26.31 |
| 9 | 10.26.26.32/30 | 10.26.26.33 – 10.26.26.34 | 10.26.26.35 |
| 10 | 10.26.26.36/30 | 10.26.26.37 – 10.26.26.38 | 10.26.26.39 |
| 11 | 10.26.26.40/30 | 10.26.26.41 – 10.26.26.42 | 10.26.26.43 |
| 12 | 10.26.26.44/30 | 10.26.26.45 – 10.26.26.46 | 10.26.26.47 |
| 13 | 10.26.26.48/30 | 10.26.26.49 – 10.26.26.50 | 10.26.26.51 |
| 14 | 10.26.26.52/30 | 10.26.26.53 – 10.26.26.54 | 10.26.26.55 |
| 15 | 10.26.26.56/30 | 10.26.26.57 – 10.26.26.58 | 10.26.26.59 |
| 16 | 10.26.26.60/30 | 10.26.26.61 – 10.26.26.62 | 10.26.26.63 |
| 17 | 10.26.26.64/30 | 10.26.26.65 – 10.26.26.66 | 10.26.26.67 |
| 18 | 10.26.26.68/30 | 10.26.26.69 – 10.26.26.70 | 10.26.26.71 |
| 19 | 10.26.26.72/30 | 10.26.26.73 – 10.26.26.74 | 10.26.26.75 |
| 20 | 10.26.26.76/30 | 10.26.26.77 – 10.26.26.78 | 10.26.26.79 |
| 21 | 10.26.26.80/30 | 10.26.26.81 – 10.26.26.82 | 10.26.26.83 |
| 22 | 10.26.26.84/30 | 10.26.26.85 – 10.26.26.86 | 10.26.26.87 |
| 23 | 10.26.26.88/30 | 10.26.26.89 – 10.26.26.90 | 10.26.26.91 |
| 24 | 10.26.26.92/30 | 10.26.26.93 – 10.26.26.94 | 10.26.26.95 |
| 25 | 10.26.26.96/30 | 10.26.26.97 – 10.26.26.98 | 10.26.26.99 |
| 26 | 10.26.26.100/30 | 10.26.26.101 – 10.26.26.102 | 10.26.26.103 |
| 27 | 10.26.26.104/30 | 10.26.26.105 – 10.26.26.106 | 10.26.26.107 |
| 28 | 10.26.26.108/30 | 10.26.26.109 – 10.26.26.110 | 10.26.26.111 |
| 29 | 10.26.26.112/30 | 10.26.26.113 – 10.26.26.114 | 10.26.26.115 |
| 30 | 10.26.26.116/30 | 10.26.26.117 – 10.26.26.118 | 10.26.26.119 |
| 31 | 10.26.26.120/30 | 10.26.26.121 – 10.26.26.122 | 10.26.26.123 |
| 32 | 10.26.26.124/30 | 10.26.26.125 – 10.26.26.126 | 10.26.26.127 |
| 33 | 10.26.26.128/30 | 10.26.26.129 – 10.26.26.130 | 10.26.26.131 |
| 34 | 10.26.26.132/30 | 10.26.26.133 – 10.26.26.134 | 10.26.26.135 |
| 35 | 10.26.26.136/30 | 10.26.26.137 – 10.26.26.138 | 10.26.26.139 |
| 36 | 10.26.26.140/30 | 10.26.26.141 – 10.26.26.142 | 10.26.26.143 |
| 37 | 10.26.26.144/30 | 10.26.26.145 – 10.26.26.146 | 10.26.26.147 |
| 38 | 10.26.26.148/30 | 10.26.26.149 – 10.26.26.150 | 10.26.26.151 |
| 39 | 10.26.26.152/30 | 10.26.26.153 – 10.26.26.154 | 10.26.26.155 |
| 40 | 10.26.26.156/30 | 10.26.26.157 – 10.26.26.158 | 10.26.26.159 |
| 41 | 10.26.26.160/30 | 10.26.26.161 – 10.26.26.162 | 10.26.26.163 |
| 42 | 10.26.26.164/30 | 10.26.26.165 – 10.26.26.166 | 10.26.26.167 |
| 43 | 10.26.26.168/30 | 10.26.26.169 – 10.26.26.170 | 10.26.26.171 |
| 44 | 10.26.26.172/30 | 10.26.26.173 – 10.26.26.174 | 10.26.26.175 |
| 45 | 10.26.26.176/30 | 10.26.26.177 – 10.26.26.178 | 10.26.26.179 |
| 46 | 10.26.26.180/30 | 10.26.26.181 – 10.26.26.182 | 10.26.26.183 |
| 47 | 10.26.26.184/30 | 10.26.26.185 – 10.26.26.186 | 10.26.26.187 |
| 48 | 10.26.26.188/30 | 10.26.26.189 – 10.26.26.190 | 10.26.26.191 |
| 49 | 10.26.26.192/30 | 10.26.26.193 – 10.26.26.194 | 10.26.26.195 |
| 50 | 10.26.26.196/30 | 10.26.26.197 – 10.26.26.198 | 10.26.26.199 |
| 51 | 10.26.26.200/30 | 10.26.26.201 – 10.26.26.202 | 10.26.26.203 |
| 52 | 10.26.26.204/30 | 10.26.26.205 – 10.26.26.206 | 10.26.26.207 |
| 53 | 10.26.26.208/30 | 10.26.26.209 – 10.26.26.210 | 10.26.26.211 |
| 54 | 10.26.26.212/30 | 10.26.26.213 – 10.26.26.214 | 10.26.26.215 |
| 55 | 10.26.26.216/30 | 10.26.26.217 – 10.26.26.218 | 10.26.26.219 |
| 56 | 10.26.26.220/30 | 10.26.26.221 – 10.26.26.222 | 10.26.26.223 |
| 57 | 10.26.26.224/30 | 10.26.26.225 – 10.26.26.226 | 10.26.26.227 |
| 58 | 10.26.26.228/30 | 10.26.26.229 – 10.26.26.230 | 10.26.26.231 |
| 59 | 10.26.26.232/30 | 10.26.26.233 – 10.26.26.234 | 10.26.26.235 |
| 60 | 10.26.26.236/30 | 10.26.26.237 – 10.26.26.238 | 10.26.26.239 |
| 61 | 10.26.26.240/30 | 10.26.26.241 – 10.26.26.242 | 10.26.26.243 |
| 62 | 10.26.26.244/30 | 10.26.26.245 – 10.26.26.246 | 10.26.26.247 |
| 63 | 10.26.26.248/30 | 10.26.26.249 – 10.26.26.250 | 10.26.26.251 |
| 64 | 10.26.26.252/30 | 10.26.26.253 – 10.26.26.254 | 10.26.26.255 |
| 65 | 10.26.27.0/30 | 10.26.27.1 – 10.26.27.2 | 10.26.27.3 |
| 66 | 10.26.27.4/30 | 10.26.27.5 – 10.26.27.6 | 10.26.27.7 |
| 67 | 10.26.27.8/30 | 10.26.27.9 – 10.26.27.10 | 10.26.27.11 |
| 68 | 10.26.27.12/30 | 10.26.27.13 – 10.26.27.14 | 10.26.27.15 |
| 69 | 10.26.27.16/30 | 10.26.27.17 – 10.26.27.18 | 10.26.27.19 |
| 70 | 10.26.27.20/30 | 10.26.27.21 – 10.26.27.22 | 10.26.27.23 |
| 71 | 10.26.27.24/30 | 10.26.27.25 – 10.26.27.26 | 10.26.27.27 |
| 72 | 10.26.27.28/30 | 10.26.27.29 – 10.26.27.30 | 10.26.27.31 |
| 73 | 10.26.27.32/30 | 10.26.27.33 – 10.26.27.34 | 10.26.27.35 |
| 74 | 10.26.27.36/30 | 10.26.27.37 – 10.26.27.38 | 10.26.27.39 |
| 75 | 10.26.27.40/30 | 10.26.27.41 – 10.26.27.42 | 10.26.27.43 |
| 76 | 10.26.27.44/30 | 10.26.27.45 – 10.26.27.46 | 10.26.27.47 |
| 77 | 10.26.27.48/30 | 10.26.27.49 – 10.26.27.50 | 10.26.27.51 |
| 78 | 10.26.27.52/30 | 10.26.27.53 – 10.26.27.54 | 10.26.27.55 |
| 79 | 10.26.27.56/30 | 10.26.27.57 – 10.26.27.58 | 10.26.27.59 |
| 80 | 10.26.27.60/30 | 10.26.27.61 – 10.26.27.62 | 10.26.27.63 |
| 81 | 10.26.27.64/30 | 10.26.27.65 – 10.26.27.66 | 10.26.27.67 |
| 82 | 10.26.27.68/30 | 10.26.27.69 – 10.26.27.70 | 10.26.27.71 |
| 83 | 10.26.27.72/30 | 10.26.27.73 – 10.26.27.74 | 10.26.27.75 |
| 84 | 10.26.27.76/30 | 10.26.27.77 – 10.26.27.78 | 10.26.27.79 |
| 85 | 10.26.27.80/30 | 10.26.27.81 – 10.26.27.82 | 10.26.27.83 |
| 86 | 10.26.27.84/30 | 10.26.27.85 – 10.26.27.86 | 10.26.27.87 |
| 87 | 10.26.27.88/30 | 10.26.27.89 – 10.26.27.90 | 10.26.27.91 |
| 88 | 10.26.27.92/30 | 10.26.27.93 – 10.26.27.94 | 10.26.27.95 |
| 89 | 10.26.27.96/30 | 10.26.27.97 – 10.26.27.98 | 10.26.27.99 |
| 90 | 10.26.27.100/30 | 10.26.27.101 – 10.26.27.102 | 10.26.27.103 |
| 91 | 10.26.27.104/30 | 10.26.27.105 – 10.26.27.106 | 10.26.27.107 |
| 92 | 10.26.27.108/30 | 10.26.27.109 – 10.26.27.110 | 10.26.27.111 |
| 93 | 10.26.27.112/30 | 10.26.27.113 – 10.26.27.114 | 10.26.27.115 |
| 94 | 10.26.27.116/30 | 10.26.27.117 – 10.26.27.118 | 10.26.27.119 |
| 95 | 10.26.27.120/30 | 10.26.27.121 – 10.26.27.122 | 10.26.27.123 |
| 96 | 10.26.27.124/30 | 10.26.27.125 – 10.26.27.126 | 10.26.27.127 |
| 97 | 10.26.27.128/30 | 10.26.27.129 – 10.26.27.130 | 10.26.27.131 |
| 98 | 10.26.27.132/30 | 10.26.27.133 – 10.26.27.134 | 10.26.27.135 |
| 99 | 10.26.27.136/30 | 10.26.27.137 – 10.26.27.138 | 10.26.27.139 |
| 100 | 10.26.27.140/30 | 10.26.27.141 – 10.26.27.142 | 10.26.27.143 |
| 101 | 10.26.27.144/30 | 10.26.27.145 – 10.26.27.146 | 10.26.27.147 |
| 102 | 10.26.27.148/30 | 10.26.27.149 – 10.26.27.150 | 10.26.27.151 |
| 103 | 10.26.27.152/30 | 10.26.27.153 – 10.26.27.154 | 10.26.27.155 |
| 104 | 10.26.27.156/30 | 10.26.27.157 – 10.26.27.158 | 10.26.27.159 |
| 105 | 10.26.27.160/30 | 10.26.27.161 – 10.26.27.162 | 10.26.27.163 |
| 106 | 10.26.27.164/30 | 10.26.27.165 – 10.26.27.166 | 10.26.27.167 |
| 107 | 10.26.27.168/30 | 10.26.27.169 – 10.26.27.170 | 10.26.27.171 |
| 108 | 10.26.27.172/30 | 10.26.27.173 – 10.26.27.174 | 10.26.27.175 |
| 109 | 10.26.27.176/30 | 10.26.27.177 – 10.26.27.178 | 10.26.27.179 |
| 110 | 10.26.27.180/30 | 10.26.27.181 – 10.26.27.182 | 10.26.27.183 |
| 111 | 10.26.27.184/30 | 10.26.27.185 – 10.26.27.186 | 10.26.27.187 |
| 112 | 10.26.27.188/30 | 10.26.27.189 – 10.26.27.190 | 10.26.27.191 |
| 113 | 10.26.27.192/30 | 10.26.27.193 – 10.26.27.194 | 10.26.27.195 |
| 114 | 10.26.27.196/30 | 10.26.27.197 – 10.26.27.198 | 10.26.27.199 |
| 115 | 10.26.27.200/30 | 10.26.27.201 – 10.26.27.202 | 10.26.27.203 |
| 116 | 10.26.27.204/30 | 10.26.27.205 – 10.26.27.206 | 10.26.27.207 |
| 117 | 10.26.27.208/30 | 10.26.27.209 – 10.26.27.210 | 10.26.27.211 |
| 118 | 10.26.27.212/30 | 10.26.27.213 – 10.26.27.214 | 10.26.27.215 |
| 119 | 10.26.27.216/30 | 10.26.27.217 – 10.26.27.218 | 10.26.27.219 |
| 120 | 10.26.27.220/30 | 10.26.27.221 – 10.26.27.222 | 10.26.27.223 |
| 121 | 10.26.27.224/30 | 10.26.27.225 – 10.26.27.226 | 10.26.27.227 |
| 122 | 10.26.27.228/30 | 10.26.27.229 – 10.26.27.230 | 10.26.27.231 |
| 123 | 10.26.27.232/30 | 10.26.27.233 – 10.26.27.234 | 10.26.27.235 |
| 124 | 10.26.27.236/30 | 10.26.27.237 – 10.26.27.238 | 10.26.27.239 |
| 125 | 10.26.27.240/30 | 10.26.27.241 – 10.26.27.242 | 10.26.27.243 |
| 126 | 10.26.27.244/30 | 10.26.27.245 – 10.26.27.246 | 10.26.27.247 |
| 127 | 10.26.27.248/30 | 10.26.27.249 – 10.26.27.250 | 10.26.27.251 |
| 128 | 10.26.27.252/30 | 10.26.27.253 – 10.26.27.254 | 10.26.27.255 |
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.