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)10.138.76.0/22
network10.138.76.0/22
broadcast10.138.79.255
first host10.138.76.1
last host10.138.79.254
subnet mask255.255.252.0
wildcard0.0.3.255
addresses1,024
usable hosts1,022
classA
ipcalc 10.138.76.0/22
address00001010.10001010.01001100.00000000
subnet mask11111111.11111111.11111100.00000000
network00001010.10001010.01001100.00000000
broadcast00001010.10001010.01001111.11111111
green = network part, grey = host part
hex0x0a8a4c00
decimal176835584
reverse dns0.76.138.10.in-addr.arpa
ipv4-mapped::ffff:a8a:4c00
/22 split into /29 · 128 subnets
close ×| # | network | host range | broadcast |
|---|---|---|---|
| 1 | 10.138.76.0/29 | 10.138.76.1 – 10.138.76.6 | 10.138.76.7 |
| 2 | 10.138.76.8/29 | 10.138.76.9 – 10.138.76.14 | 10.138.76.15 |
| 3 | 10.138.76.16/29 | 10.138.76.17 – 10.138.76.22 | 10.138.76.23 |
| 4 | 10.138.76.24/29 | 10.138.76.25 – 10.138.76.30 | 10.138.76.31 |
| 5 | 10.138.76.32/29 | 10.138.76.33 – 10.138.76.38 | 10.138.76.39 |
| 6 | 10.138.76.40/29 | 10.138.76.41 – 10.138.76.46 | 10.138.76.47 |
| 7 | 10.138.76.48/29 | 10.138.76.49 – 10.138.76.54 | 10.138.76.55 |
| 8 | 10.138.76.56/29 | 10.138.76.57 – 10.138.76.62 | 10.138.76.63 |
| 9 | 10.138.76.64/29 | 10.138.76.65 – 10.138.76.70 | 10.138.76.71 |
| 10 | 10.138.76.72/29 | 10.138.76.73 – 10.138.76.78 | 10.138.76.79 |
| 11 | 10.138.76.80/29 | 10.138.76.81 – 10.138.76.86 | 10.138.76.87 |
| 12 | 10.138.76.88/29 | 10.138.76.89 – 10.138.76.94 | 10.138.76.95 |
| 13 | 10.138.76.96/29 | 10.138.76.97 – 10.138.76.102 | 10.138.76.103 |
| 14 | 10.138.76.104/29 | 10.138.76.105 – 10.138.76.110 | 10.138.76.111 |
| 15 | 10.138.76.112/29 | 10.138.76.113 – 10.138.76.118 | 10.138.76.119 |
| 16 | 10.138.76.120/29 | 10.138.76.121 – 10.138.76.126 | 10.138.76.127 |
| 17 | 10.138.76.128/29 | 10.138.76.129 – 10.138.76.134 | 10.138.76.135 |
| 18 | 10.138.76.136/29 | 10.138.76.137 – 10.138.76.142 | 10.138.76.143 |
| 19 | 10.138.76.144/29 | 10.138.76.145 – 10.138.76.150 | 10.138.76.151 |
| 20 | 10.138.76.152/29 | 10.138.76.153 – 10.138.76.158 | 10.138.76.159 |
| 21 | 10.138.76.160/29 | 10.138.76.161 – 10.138.76.166 | 10.138.76.167 |
| 22 | 10.138.76.168/29 | 10.138.76.169 – 10.138.76.174 | 10.138.76.175 |
| 23 | 10.138.76.176/29 | 10.138.76.177 – 10.138.76.182 | 10.138.76.183 |
| 24 | 10.138.76.184/29 | 10.138.76.185 – 10.138.76.190 | 10.138.76.191 |
| 25 | 10.138.76.192/29 | 10.138.76.193 – 10.138.76.198 | 10.138.76.199 |
| 26 | 10.138.76.200/29 | 10.138.76.201 – 10.138.76.206 | 10.138.76.207 |
| 27 | 10.138.76.208/29 | 10.138.76.209 – 10.138.76.214 | 10.138.76.215 |
| 28 | 10.138.76.216/29 | 10.138.76.217 – 10.138.76.222 | 10.138.76.223 |
| 29 | 10.138.76.224/29 | 10.138.76.225 – 10.138.76.230 | 10.138.76.231 |
| 30 | 10.138.76.232/29 | 10.138.76.233 – 10.138.76.238 | 10.138.76.239 |
| 31 | 10.138.76.240/29 | 10.138.76.241 – 10.138.76.246 | 10.138.76.247 |
| 32 | 10.138.76.248/29 | 10.138.76.249 – 10.138.76.254 | 10.138.76.255 |
| 33 | 10.138.77.0/29 | 10.138.77.1 – 10.138.77.6 | 10.138.77.7 |
| 34 | 10.138.77.8/29 | 10.138.77.9 – 10.138.77.14 | 10.138.77.15 |
| 35 | 10.138.77.16/29 | 10.138.77.17 – 10.138.77.22 | 10.138.77.23 |
| 36 | 10.138.77.24/29 | 10.138.77.25 – 10.138.77.30 | 10.138.77.31 |
| 37 | 10.138.77.32/29 | 10.138.77.33 – 10.138.77.38 | 10.138.77.39 |
| 38 | 10.138.77.40/29 | 10.138.77.41 – 10.138.77.46 | 10.138.77.47 |
| 39 | 10.138.77.48/29 | 10.138.77.49 – 10.138.77.54 | 10.138.77.55 |
| 40 | 10.138.77.56/29 | 10.138.77.57 – 10.138.77.62 | 10.138.77.63 |
| 41 | 10.138.77.64/29 | 10.138.77.65 – 10.138.77.70 | 10.138.77.71 |
| 42 | 10.138.77.72/29 | 10.138.77.73 – 10.138.77.78 | 10.138.77.79 |
| 43 | 10.138.77.80/29 | 10.138.77.81 – 10.138.77.86 | 10.138.77.87 |
| 44 | 10.138.77.88/29 | 10.138.77.89 – 10.138.77.94 | 10.138.77.95 |
| 45 | 10.138.77.96/29 | 10.138.77.97 – 10.138.77.102 | 10.138.77.103 |
| 46 | 10.138.77.104/29 | 10.138.77.105 – 10.138.77.110 | 10.138.77.111 |
| 47 | 10.138.77.112/29 | 10.138.77.113 – 10.138.77.118 | 10.138.77.119 |
| 48 | 10.138.77.120/29 | 10.138.77.121 – 10.138.77.126 | 10.138.77.127 |
| 49 | 10.138.77.128/29 | 10.138.77.129 – 10.138.77.134 | 10.138.77.135 |
| 50 | 10.138.77.136/29 | 10.138.77.137 – 10.138.77.142 | 10.138.77.143 |
| 51 | 10.138.77.144/29 | 10.138.77.145 – 10.138.77.150 | 10.138.77.151 |
| 52 | 10.138.77.152/29 | 10.138.77.153 – 10.138.77.158 | 10.138.77.159 |
| 53 | 10.138.77.160/29 | 10.138.77.161 – 10.138.77.166 | 10.138.77.167 |
| 54 | 10.138.77.168/29 | 10.138.77.169 – 10.138.77.174 | 10.138.77.175 |
| 55 | 10.138.77.176/29 | 10.138.77.177 – 10.138.77.182 | 10.138.77.183 |
| 56 | 10.138.77.184/29 | 10.138.77.185 – 10.138.77.190 | 10.138.77.191 |
| 57 | 10.138.77.192/29 | 10.138.77.193 – 10.138.77.198 | 10.138.77.199 |
| 58 | 10.138.77.200/29 | 10.138.77.201 – 10.138.77.206 | 10.138.77.207 |
| 59 | 10.138.77.208/29 | 10.138.77.209 – 10.138.77.214 | 10.138.77.215 |
| 60 | 10.138.77.216/29 | 10.138.77.217 – 10.138.77.222 | 10.138.77.223 |
| 61 | 10.138.77.224/29 | 10.138.77.225 – 10.138.77.230 | 10.138.77.231 |
| 62 | 10.138.77.232/29 | 10.138.77.233 – 10.138.77.238 | 10.138.77.239 |
| 63 | 10.138.77.240/29 | 10.138.77.241 – 10.138.77.246 | 10.138.77.247 |
| 64 | 10.138.77.248/29 | 10.138.77.249 – 10.138.77.254 | 10.138.77.255 |
| 65 | 10.138.78.0/29 | 10.138.78.1 – 10.138.78.6 | 10.138.78.7 |
| 66 | 10.138.78.8/29 | 10.138.78.9 – 10.138.78.14 | 10.138.78.15 |
| 67 | 10.138.78.16/29 | 10.138.78.17 – 10.138.78.22 | 10.138.78.23 |
| 68 | 10.138.78.24/29 | 10.138.78.25 – 10.138.78.30 | 10.138.78.31 |
| 69 | 10.138.78.32/29 | 10.138.78.33 – 10.138.78.38 | 10.138.78.39 |
| 70 | 10.138.78.40/29 | 10.138.78.41 – 10.138.78.46 | 10.138.78.47 |
| 71 | 10.138.78.48/29 | 10.138.78.49 – 10.138.78.54 | 10.138.78.55 |
| 72 | 10.138.78.56/29 | 10.138.78.57 – 10.138.78.62 | 10.138.78.63 |
| 73 | 10.138.78.64/29 | 10.138.78.65 – 10.138.78.70 | 10.138.78.71 |
| 74 | 10.138.78.72/29 | 10.138.78.73 – 10.138.78.78 | 10.138.78.79 |
| 75 | 10.138.78.80/29 | 10.138.78.81 – 10.138.78.86 | 10.138.78.87 |
| 76 | 10.138.78.88/29 | 10.138.78.89 – 10.138.78.94 | 10.138.78.95 |
| 77 | 10.138.78.96/29 | 10.138.78.97 – 10.138.78.102 | 10.138.78.103 |
| 78 | 10.138.78.104/29 | 10.138.78.105 – 10.138.78.110 | 10.138.78.111 |
| 79 | 10.138.78.112/29 | 10.138.78.113 – 10.138.78.118 | 10.138.78.119 |
| 80 | 10.138.78.120/29 | 10.138.78.121 – 10.138.78.126 | 10.138.78.127 |
| 81 | 10.138.78.128/29 | 10.138.78.129 – 10.138.78.134 | 10.138.78.135 |
| 82 | 10.138.78.136/29 | 10.138.78.137 – 10.138.78.142 | 10.138.78.143 |
| 83 | 10.138.78.144/29 | 10.138.78.145 – 10.138.78.150 | 10.138.78.151 |
| 84 | 10.138.78.152/29 | 10.138.78.153 – 10.138.78.158 | 10.138.78.159 |
| 85 | 10.138.78.160/29 | 10.138.78.161 – 10.138.78.166 | 10.138.78.167 |
| 86 | 10.138.78.168/29 | 10.138.78.169 – 10.138.78.174 | 10.138.78.175 |
| 87 | 10.138.78.176/29 | 10.138.78.177 – 10.138.78.182 | 10.138.78.183 |
| 88 | 10.138.78.184/29 | 10.138.78.185 – 10.138.78.190 | 10.138.78.191 |
| 89 | 10.138.78.192/29 | 10.138.78.193 – 10.138.78.198 | 10.138.78.199 |
| 90 | 10.138.78.200/29 | 10.138.78.201 – 10.138.78.206 | 10.138.78.207 |
| 91 | 10.138.78.208/29 | 10.138.78.209 – 10.138.78.214 | 10.138.78.215 |
| 92 | 10.138.78.216/29 | 10.138.78.217 – 10.138.78.222 | 10.138.78.223 |
| 93 | 10.138.78.224/29 | 10.138.78.225 – 10.138.78.230 | 10.138.78.231 |
| 94 | 10.138.78.232/29 | 10.138.78.233 – 10.138.78.238 | 10.138.78.239 |
| 95 | 10.138.78.240/29 | 10.138.78.241 – 10.138.78.246 | 10.138.78.247 |
| 96 | 10.138.78.248/29 | 10.138.78.249 – 10.138.78.254 | 10.138.78.255 |
| 97 | 10.138.79.0/29 | 10.138.79.1 – 10.138.79.6 | 10.138.79.7 |
| 98 | 10.138.79.8/29 | 10.138.79.9 – 10.138.79.14 | 10.138.79.15 |
| 99 | 10.138.79.16/29 | 10.138.79.17 – 10.138.79.22 | 10.138.79.23 |
| 100 | 10.138.79.24/29 | 10.138.79.25 – 10.138.79.30 | 10.138.79.31 |
| 101 | 10.138.79.32/29 | 10.138.79.33 – 10.138.79.38 | 10.138.79.39 |
| 102 | 10.138.79.40/29 | 10.138.79.41 – 10.138.79.46 | 10.138.79.47 |
| 103 | 10.138.79.48/29 | 10.138.79.49 – 10.138.79.54 | 10.138.79.55 |
| 104 | 10.138.79.56/29 | 10.138.79.57 – 10.138.79.62 | 10.138.79.63 |
| 105 | 10.138.79.64/29 | 10.138.79.65 – 10.138.79.70 | 10.138.79.71 |
| 106 | 10.138.79.72/29 | 10.138.79.73 – 10.138.79.78 | 10.138.79.79 |
| 107 | 10.138.79.80/29 | 10.138.79.81 – 10.138.79.86 | 10.138.79.87 |
| 108 | 10.138.79.88/29 | 10.138.79.89 – 10.138.79.94 | 10.138.79.95 |
| 109 | 10.138.79.96/29 | 10.138.79.97 – 10.138.79.102 | 10.138.79.103 |
| 110 | 10.138.79.104/29 | 10.138.79.105 – 10.138.79.110 | 10.138.79.111 |
| 111 | 10.138.79.112/29 | 10.138.79.113 – 10.138.79.118 | 10.138.79.119 |
| 112 | 10.138.79.120/29 | 10.138.79.121 – 10.138.79.126 | 10.138.79.127 |
| 113 | 10.138.79.128/29 | 10.138.79.129 – 10.138.79.134 | 10.138.79.135 |
| 114 | 10.138.79.136/29 | 10.138.79.137 – 10.138.79.142 | 10.138.79.143 |
| 115 | 10.138.79.144/29 | 10.138.79.145 – 10.138.79.150 | 10.138.79.151 |
| 116 | 10.138.79.152/29 | 10.138.79.153 – 10.138.79.158 | 10.138.79.159 |
| 117 | 10.138.79.160/29 | 10.138.79.161 – 10.138.79.166 | 10.138.79.167 |
| 118 | 10.138.79.168/29 | 10.138.79.169 – 10.138.79.174 | 10.138.79.175 |
| 119 | 10.138.79.176/29 | 10.138.79.177 – 10.138.79.182 | 10.138.79.183 |
| 120 | 10.138.79.184/29 | 10.138.79.185 – 10.138.79.190 | 10.138.79.191 |
| 121 | 10.138.79.192/29 | 10.138.79.193 – 10.138.79.198 | 10.138.79.199 |
| 122 | 10.138.79.200/29 | 10.138.79.201 – 10.138.79.206 | 10.138.79.207 |
| 123 | 10.138.79.208/29 | 10.138.79.209 – 10.138.79.214 | 10.138.79.215 |
| 124 | 10.138.79.216/29 | 10.138.79.217 – 10.138.79.222 | 10.138.79.223 |
| 125 | 10.138.79.224/29 | 10.138.79.225 – 10.138.79.230 | 10.138.79.231 |
| 126 | 10.138.79.232/29 | 10.138.79.233 – 10.138.79.238 | 10.138.79.239 |
| 127 | 10.138.79.240/29 | 10.138.79.241 – 10.138.79.246 | 10.138.79.247 |
| 128 | 10.138.79.248/29 | 10.138.79.249 – 10.138.79.254 | 10.138.79.255 |
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 /22 |
|---|---|---|---|---|
| /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 | 1 |
| /23 | 255.255.254.0 | 512 | 510 | 2 split → |
| /24 | 255.255.255.0 | 256 | 254 | 4 split → |
| /25 | 255.255.255.128 | 128 | 126 | 8 split → |
| /26 | 255.255.255.192 | 64 | 62 | 16 split → |
| /27 | 255.255.255.224 | 32 | 30 | 32 split → |
| /28 | 255.255.255.240 | 16 | 14 | 64 split → |
| /29 | 255.255.255.248 | 8 | 6 | 128 split → |
| /30 | 255.255.255.252 | 4 | 2 | 256 split → |
| /31 | 255.255.255.254 | 2 | 2 | 512 split → |
| /32 | 255.255.255.255 | 1 | 1 | 1,024 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.