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)10.78.16.0/22
network10.78.16.0/22
broadcast10.78.19.255
first host10.78.16.1
last host10.78.19.254
subnet mask255.255.252.0
wildcard0.0.3.255
addresses1,024
usable hosts1,022
classA
ipcalc 10.78.16.0/22
address00001010.01001110.00010000.00000000
subnet mask11111111.11111111.11111100.00000000
network00001010.01001110.00010000.00000000
broadcast00001010.01001110.00010011.11111111
green = network part, grey = host part
hex0x0a4e1000
decimal172888064
reverse dns0.16.78.10.in-addr.arpa
ipv4-mapped::ffff:a4e:1000
/22 split into /29 · 128 subnets
close ×| # | network | host range | broadcast |
|---|---|---|---|
| 1 | 10.78.16.0/29 | 10.78.16.1 – 10.78.16.6 | 10.78.16.7 |
| 2 | 10.78.16.8/29 | 10.78.16.9 – 10.78.16.14 | 10.78.16.15 |
| 3 | 10.78.16.16/29 | 10.78.16.17 – 10.78.16.22 | 10.78.16.23 |
| 4 | 10.78.16.24/29 | 10.78.16.25 – 10.78.16.30 | 10.78.16.31 |
| 5 | 10.78.16.32/29 | 10.78.16.33 – 10.78.16.38 | 10.78.16.39 |
| 6 | 10.78.16.40/29 | 10.78.16.41 – 10.78.16.46 | 10.78.16.47 |
| 7 | 10.78.16.48/29 | 10.78.16.49 – 10.78.16.54 | 10.78.16.55 |
| 8 | 10.78.16.56/29 | 10.78.16.57 – 10.78.16.62 | 10.78.16.63 |
| 9 | 10.78.16.64/29 | 10.78.16.65 – 10.78.16.70 | 10.78.16.71 |
| 10 | 10.78.16.72/29 | 10.78.16.73 – 10.78.16.78 | 10.78.16.79 |
| 11 | 10.78.16.80/29 | 10.78.16.81 – 10.78.16.86 | 10.78.16.87 |
| 12 | 10.78.16.88/29 | 10.78.16.89 – 10.78.16.94 | 10.78.16.95 |
| 13 | 10.78.16.96/29 | 10.78.16.97 – 10.78.16.102 | 10.78.16.103 |
| 14 | 10.78.16.104/29 | 10.78.16.105 – 10.78.16.110 | 10.78.16.111 |
| 15 | 10.78.16.112/29 | 10.78.16.113 – 10.78.16.118 | 10.78.16.119 |
| 16 | 10.78.16.120/29 | 10.78.16.121 – 10.78.16.126 | 10.78.16.127 |
| 17 | 10.78.16.128/29 | 10.78.16.129 – 10.78.16.134 | 10.78.16.135 |
| 18 | 10.78.16.136/29 | 10.78.16.137 – 10.78.16.142 | 10.78.16.143 |
| 19 | 10.78.16.144/29 | 10.78.16.145 – 10.78.16.150 | 10.78.16.151 |
| 20 | 10.78.16.152/29 | 10.78.16.153 – 10.78.16.158 | 10.78.16.159 |
| 21 | 10.78.16.160/29 | 10.78.16.161 – 10.78.16.166 | 10.78.16.167 |
| 22 | 10.78.16.168/29 | 10.78.16.169 – 10.78.16.174 | 10.78.16.175 |
| 23 | 10.78.16.176/29 | 10.78.16.177 – 10.78.16.182 | 10.78.16.183 |
| 24 | 10.78.16.184/29 | 10.78.16.185 – 10.78.16.190 | 10.78.16.191 |
| 25 | 10.78.16.192/29 | 10.78.16.193 – 10.78.16.198 | 10.78.16.199 |
| 26 | 10.78.16.200/29 | 10.78.16.201 – 10.78.16.206 | 10.78.16.207 |
| 27 | 10.78.16.208/29 | 10.78.16.209 – 10.78.16.214 | 10.78.16.215 |
| 28 | 10.78.16.216/29 | 10.78.16.217 – 10.78.16.222 | 10.78.16.223 |
| 29 | 10.78.16.224/29 | 10.78.16.225 – 10.78.16.230 | 10.78.16.231 |
| 30 | 10.78.16.232/29 | 10.78.16.233 – 10.78.16.238 | 10.78.16.239 |
| 31 | 10.78.16.240/29 | 10.78.16.241 – 10.78.16.246 | 10.78.16.247 |
| 32 | 10.78.16.248/29 | 10.78.16.249 – 10.78.16.254 | 10.78.16.255 |
| 33 | 10.78.17.0/29 | 10.78.17.1 – 10.78.17.6 | 10.78.17.7 |
| 34 | 10.78.17.8/29 | 10.78.17.9 – 10.78.17.14 | 10.78.17.15 |
| 35 | 10.78.17.16/29 | 10.78.17.17 – 10.78.17.22 | 10.78.17.23 |
| 36 | 10.78.17.24/29 | 10.78.17.25 – 10.78.17.30 | 10.78.17.31 |
| 37 | 10.78.17.32/29 | 10.78.17.33 – 10.78.17.38 | 10.78.17.39 |
| 38 | 10.78.17.40/29 | 10.78.17.41 – 10.78.17.46 | 10.78.17.47 |
| 39 | 10.78.17.48/29 | 10.78.17.49 – 10.78.17.54 | 10.78.17.55 |
| 40 | 10.78.17.56/29 | 10.78.17.57 – 10.78.17.62 | 10.78.17.63 |
| 41 | 10.78.17.64/29 | 10.78.17.65 – 10.78.17.70 | 10.78.17.71 |
| 42 | 10.78.17.72/29 | 10.78.17.73 – 10.78.17.78 | 10.78.17.79 |
| 43 | 10.78.17.80/29 | 10.78.17.81 – 10.78.17.86 | 10.78.17.87 |
| 44 | 10.78.17.88/29 | 10.78.17.89 – 10.78.17.94 | 10.78.17.95 |
| 45 | 10.78.17.96/29 | 10.78.17.97 – 10.78.17.102 | 10.78.17.103 |
| 46 | 10.78.17.104/29 | 10.78.17.105 – 10.78.17.110 | 10.78.17.111 |
| 47 | 10.78.17.112/29 | 10.78.17.113 – 10.78.17.118 | 10.78.17.119 |
| 48 | 10.78.17.120/29 | 10.78.17.121 – 10.78.17.126 | 10.78.17.127 |
| 49 | 10.78.17.128/29 | 10.78.17.129 – 10.78.17.134 | 10.78.17.135 |
| 50 | 10.78.17.136/29 | 10.78.17.137 – 10.78.17.142 | 10.78.17.143 |
| 51 | 10.78.17.144/29 | 10.78.17.145 – 10.78.17.150 | 10.78.17.151 |
| 52 | 10.78.17.152/29 | 10.78.17.153 – 10.78.17.158 | 10.78.17.159 |
| 53 | 10.78.17.160/29 | 10.78.17.161 – 10.78.17.166 | 10.78.17.167 |
| 54 | 10.78.17.168/29 | 10.78.17.169 – 10.78.17.174 | 10.78.17.175 |
| 55 | 10.78.17.176/29 | 10.78.17.177 – 10.78.17.182 | 10.78.17.183 |
| 56 | 10.78.17.184/29 | 10.78.17.185 – 10.78.17.190 | 10.78.17.191 |
| 57 | 10.78.17.192/29 | 10.78.17.193 – 10.78.17.198 | 10.78.17.199 |
| 58 | 10.78.17.200/29 | 10.78.17.201 – 10.78.17.206 | 10.78.17.207 |
| 59 | 10.78.17.208/29 | 10.78.17.209 – 10.78.17.214 | 10.78.17.215 |
| 60 | 10.78.17.216/29 | 10.78.17.217 – 10.78.17.222 | 10.78.17.223 |
| 61 | 10.78.17.224/29 | 10.78.17.225 – 10.78.17.230 | 10.78.17.231 |
| 62 | 10.78.17.232/29 | 10.78.17.233 – 10.78.17.238 | 10.78.17.239 |
| 63 | 10.78.17.240/29 | 10.78.17.241 – 10.78.17.246 | 10.78.17.247 |
| 64 | 10.78.17.248/29 | 10.78.17.249 – 10.78.17.254 | 10.78.17.255 |
| 65 | 10.78.18.0/29 | 10.78.18.1 – 10.78.18.6 | 10.78.18.7 |
| 66 | 10.78.18.8/29 | 10.78.18.9 – 10.78.18.14 | 10.78.18.15 |
| 67 | 10.78.18.16/29 | 10.78.18.17 – 10.78.18.22 | 10.78.18.23 |
| 68 | 10.78.18.24/29 | 10.78.18.25 – 10.78.18.30 | 10.78.18.31 |
| 69 | 10.78.18.32/29 | 10.78.18.33 – 10.78.18.38 | 10.78.18.39 |
| 70 | 10.78.18.40/29 | 10.78.18.41 – 10.78.18.46 | 10.78.18.47 |
| 71 | 10.78.18.48/29 | 10.78.18.49 – 10.78.18.54 | 10.78.18.55 |
| 72 | 10.78.18.56/29 | 10.78.18.57 – 10.78.18.62 | 10.78.18.63 |
| 73 | 10.78.18.64/29 | 10.78.18.65 – 10.78.18.70 | 10.78.18.71 |
| 74 | 10.78.18.72/29 | 10.78.18.73 – 10.78.18.78 | 10.78.18.79 |
| 75 | 10.78.18.80/29 | 10.78.18.81 – 10.78.18.86 | 10.78.18.87 |
| 76 | 10.78.18.88/29 | 10.78.18.89 – 10.78.18.94 | 10.78.18.95 |
| 77 | 10.78.18.96/29 | 10.78.18.97 – 10.78.18.102 | 10.78.18.103 |
| 78 | 10.78.18.104/29 | 10.78.18.105 – 10.78.18.110 | 10.78.18.111 |
| 79 | 10.78.18.112/29 | 10.78.18.113 – 10.78.18.118 | 10.78.18.119 |
| 80 | 10.78.18.120/29 | 10.78.18.121 – 10.78.18.126 | 10.78.18.127 |
| 81 | 10.78.18.128/29 | 10.78.18.129 – 10.78.18.134 | 10.78.18.135 |
| 82 | 10.78.18.136/29 | 10.78.18.137 – 10.78.18.142 | 10.78.18.143 |
| 83 | 10.78.18.144/29 | 10.78.18.145 – 10.78.18.150 | 10.78.18.151 |
| 84 | 10.78.18.152/29 | 10.78.18.153 – 10.78.18.158 | 10.78.18.159 |
| 85 | 10.78.18.160/29 | 10.78.18.161 – 10.78.18.166 | 10.78.18.167 |
| 86 | 10.78.18.168/29 | 10.78.18.169 – 10.78.18.174 | 10.78.18.175 |
| 87 | 10.78.18.176/29 | 10.78.18.177 – 10.78.18.182 | 10.78.18.183 |
| 88 | 10.78.18.184/29 | 10.78.18.185 – 10.78.18.190 | 10.78.18.191 |
| 89 | 10.78.18.192/29 | 10.78.18.193 – 10.78.18.198 | 10.78.18.199 |
| 90 | 10.78.18.200/29 | 10.78.18.201 – 10.78.18.206 | 10.78.18.207 |
| 91 | 10.78.18.208/29 | 10.78.18.209 – 10.78.18.214 | 10.78.18.215 |
| 92 | 10.78.18.216/29 | 10.78.18.217 – 10.78.18.222 | 10.78.18.223 |
| 93 | 10.78.18.224/29 | 10.78.18.225 – 10.78.18.230 | 10.78.18.231 |
| 94 | 10.78.18.232/29 | 10.78.18.233 – 10.78.18.238 | 10.78.18.239 |
| 95 | 10.78.18.240/29 | 10.78.18.241 – 10.78.18.246 | 10.78.18.247 |
| 96 | 10.78.18.248/29 | 10.78.18.249 – 10.78.18.254 | 10.78.18.255 |
| 97 | 10.78.19.0/29 | 10.78.19.1 – 10.78.19.6 | 10.78.19.7 |
| 98 | 10.78.19.8/29 | 10.78.19.9 – 10.78.19.14 | 10.78.19.15 |
| 99 | 10.78.19.16/29 | 10.78.19.17 – 10.78.19.22 | 10.78.19.23 |
| 100 | 10.78.19.24/29 | 10.78.19.25 – 10.78.19.30 | 10.78.19.31 |
| 101 | 10.78.19.32/29 | 10.78.19.33 – 10.78.19.38 | 10.78.19.39 |
| 102 | 10.78.19.40/29 | 10.78.19.41 – 10.78.19.46 | 10.78.19.47 |
| 103 | 10.78.19.48/29 | 10.78.19.49 – 10.78.19.54 | 10.78.19.55 |
| 104 | 10.78.19.56/29 | 10.78.19.57 – 10.78.19.62 | 10.78.19.63 |
| 105 | 10.78.19.64/29 | 10.78.19.65 – 10.78.19.70 | 10.78.19.71 |
| 106 | 10.78.19.72/29 | 10.78.19.73 – 10.78.19.78 | 10.78.19.79 |
| 107 | 10.78.19.80/29 | 10.78.19.81 – 10.78.19.86 | 10.78.19.87 |
| 108 | 10.78.19.88/29 | 10.78.19.89 – 10.78.19.94 | 10.78.19.95 |
| 109 | 10.78.19.96/29 | 10.78.19.97 – 10.78.19.102 | 10.78.19.103 |
| 110 | 10.78.19.104/29 | 10.78.19.105 – 10.78.19.110 | 10.78.19.111 |
| 111 | 10.78.19.112/29 | 10.78.19.113 – 10.78.19.118 | 10.78.19.119 |
| 112 | 10.78.19.120/29 | 10.78.19.121 – 10.78.19.126 | 10.78.19.127 |
| 113 | 10.78.19.128/29 | 10.78.19.129 – 10.78.19.134 | 10.78.19.135 |
| 114 | 10.78.19.136/29 | 10.78.19.137 – 10.78.19.142 | 10.78.19.143 |
| 115 | 10.78.19.144/29 | 10.78.19.145 – 10.78.19.150 | 10.78.19.151 |
| 116 | 10.78.19.152/29 | 10.78.19.153 – 10.78.19.158 | 10.78.19.159 |
| 117 | 10.78.19.160/29 | 10.78.19.161 – 10.78.19.166 | 10.78.19.167 |
| 118 | 10.78.19.168/29 | 10.78.19.169 – 10.78.19.174 | 10.78.19.175 |
| 119 | 10.78.19.176/29 | 10.78.19.177 – 10.78.19.182 | 10.78.19.183 |
| 120 | 10.78.19.184/29 | 10.78.19.185 – 10.78.19.190 | 10.78.19.191 |
| 121 | 10.78.19.192/29 | 10.78.19.193 – 10.78.19.198 | 10.78.19.199 |
| 122 | 10.78.19.200/29 | 10.78.19.201 – 10.78.19.206 | 10.78.19.207 |
| 123 | 10.78.19.208/29 | 10.78.19.209 – 10.78.19.214 | 10.78.19.215 |
| 124 | 10.78.19.216/29 | 10.78.19.217 – 10.78.19.222 | 10.78.19.223 |
| 125 | 10.78.19.224/29 | 10.78.19.225 – 10.78.19.230 | 10.78.19.231 |
| 126 | 10.78.19.232/29 | 10.78.19.233 – 10.78.19.238 | 10.78.19.239 |
| 127 | 10.78.19.240/29 | 10.78.19.241 – 10.78.19.246 | 10.78.19.247 |
| 128 | 10.78.19.248/29 | 10.78.19.249 – 10.78.19.254 | 10.78.19.255 |
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.