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)10.166.84.0/22
network10.166.84.0/22
broadcast10.166.87.255
first host10.166.84.1
last host10.166.87.254
subnet mask255.255.252.0
wildcard0.0.3.255
addresses1,024
usable hosts1,022
classA
ipcalc 10.166.84.0/22
address00001010.10100110.01010100.00000000
subnet mask11111111.11111111.11111100.00000000
network00001010.10100110.01010100.00000000
broadcast00001010.10100110.01010111.11111111
green = network part, grey = host part
hex0x0aa65400
decimal178672640
reverse dns0.84.166.10.in-addr.arpa
ipv4-mapped::ffff:aa6:5400
/22 split into /29 · 128 subnets
close ×| # | network | host range | broadcast |
|---|---|---|---|
| 1 | 10.166.84.0/29 | 10.166.84.1 – 10.166.84.6 | 10.166.84.7 |
| 2 | 10.166.84.8/29 | 10.166.84.9 – 10.166.84.14 | 10.166.84.15 |
| 3 | 10.166.84.16/29 | 10.166.84.17 – 10.166.84.22 | 10.166.84.23 |
| 4 | 10.166.84.24/29 | 10.166.84.25 – 10.166.84.30 | 10.166.84.31 |
| 5 | 10.166.84.32/29 | 10.166.84.33 – 10.166.84.38 | 10.166.84.39 |
| 6 | 10.166.84.40/29 | 10.166.84.41 – 10.166.84.46 | 10.166.84.47 |
| 7 | 10.166.84.48/29 | 10.166.84.49 – 10.166.84.54 | 10.166.84.55 |
| 8 | 10.166.84.56/29 | 10.166.84.57 – 10.166.84.62 | 10.166.84.63 |
| 9 | 10.166.84.64/29 | 10.166.84.65 – 10.166.84.70 | 10.166.84.71 |
| 10 | 10.166.84.72/29 | 10.166.84.73 – 10.166.84.78 | 10.166.84.79 |
| 11 | 10.166.84.80/29 | 10.166.84.81 – 10.166.84.86 | 10.166.84.87 |
| 12 | 10.166.84.88/29 | 10.166.84.89 – 10.166.84.94 | 10.166.84.95 |
| 13 | 10.166.84.96/29 | 10.166.84.97 – 10.166.84.102 | 10.166.84.103 |
| 14 | 10.166.84.104/29 | 10.166.84.105 – 10.166.84.110 | 10.166.84.111 |
| 15 | 10.166.84.112/29 | 10.166.84.113 – 10.166.84.118 | 10.166.84.119 |
| 16 | 10.166.84.120/29 | 10.166.84.121 – 10.166.84.126 | 10.166.84.127 |
| 17 | 10.166.84.128/29 | 10.166.84.129 – 10.166.84.134 | 10.166.84.135 |
| 18 | 10.166.84.136/29 | 10.166.84.137 – 10.166.84.142 | 10.166.84.143 |
| 19 | 10.166.84.144/29 | 10.166.84.145 – 10.166.84.150 | 10.166.84.151 |
| 20 | 10.166.84.152/29 | 10.166.84.153 – 10.166.84.158 | 10.166.84.159 |
| 21 | 10.166.84.160/29 | 10.166.84.161 – 10.166.84.166 | 10.166.84.167 |
| 22 | 10.166.84.168/29 | 10.166.84.169 – 10.166.84.174 | 10.166.84.175 |
| 23 | 10.166.84.176/29 | 10.166.84.177 – 10.166.84.182 | 10.166.84.183 |
| 24 | 10.166.84.184/29 | 10.166.84.185 – 10.166.84.190 | 10.166.84.191 |
| 25 | 10.166.84.192/29 | 10.166.84.193 – 10.166.84.198 | 10.166.84.199 |
| 26 | 10.166.84.200/29 | 10.166.84.201 – 10.166.84.206 | 10.166.84.207 |
| 27 | 10.166.84.208/29 | 10.166.84.209 – 10.166.84.214 | 10.166.84.215 |
| 28 | 10.166.84.216/29 | 10.166.84.217 – 10.166.84.222 | 10.166.84.223 |
| 29 | 10.166.84.224/29 | 10.166.84.225 – 10.166.84.230 | 10.166.84.231 |
| 30 | 10.166.84.232/29 | 10.166.84.233 – 10.166.84.238 | 10.166.84.239 |
| 31 | 10.166.84.240/29 | 10.166.84.241 – 10.166.84.246 | 10.166.84.247 |
| 32 | 10.166.84.248/29 | 10.166.84.249 – 10.166.84.254 | 10.166.84.255 |
| 33 | 10.166.85.0/29 | 10.166.85.1 – 10.166.85.6 | 10.166.85.7 |
| 34 | 10.166.85.8/29 | 10.166.85.9 – 10.166.85.14 | 10.166.85.15 |
| 35 | 10.166.85.16/29 | 10.166.85.17 – 10.166.85.22 | 10.166.85.23 |
| 36 | 10.166.85.24/29 | 10.166.85.25 – 10.166.85.30 | 10.166.85.31 |
| 37 | 10.166.85.32/29 | 10.166.85.33 – 10.166.85.38 | 10.166.85.39 |
| 38 | 10.166.85.40/29 | 10.166.85.41 – 10.166.85.46 | 10.166.85.47 |
| 39 | 10.166.85.48/29 | 10.166.85.49 – 10.166.85.54 | 10.166.85.55 |
| 40 | 10.166.85.56/29 | 10.166.85.57 – 10.166.85.62 | 10.166.85.63 |
| 41 | 10.166.85.64/29 | 10.166.85.65 – 10.166.85.70 | 10.166.85.71 |
| 42 | 10.166.85.72/29 | 10.166.85.73 – 10.166.85.78 | 10.166.85.79 |
| 43 | 10.166.85.80/29 | 10.166.85.81 – 10.166.85.86 | 10.166.85.87 |
| 44 | 10.166.85.88/29 | 10.166.85.89 – 10.166.85.94 | 10.166.85.95 |
| 45 | 10.166.85.96/29 | 10.166.85.97 – 10.166.85.102 | 10.166.85.103 |
| 46 | 10.166.85.104/29 | 10.166.85.105 – 10.166.85.110 | 10.166.85.111 |
| 47 | 10.166.85.112/29 | 10.166.85.113 – 10.166.85.118 | 10.166.85.119 |
| 48 | 10.166.85.120/29 | 10.166.85.121 – 10.166.85.126 | 10.166.85.127 |
| 49 | 10.166.85.128/29 | 10.166.85.129 – 10.166.85.134 | 10.166.85.135 |
| 50 | 10.166.85.136/29 | 10.166.85.137 – 10.166.85.142 | 10.166.85.143 |
| 51 | 10.166.85.144/29 | 10.166.85.145 – 10.166.85.150 | 10.166.85.151 |
| 52 | 10.166.85.152/29 | 10.166.85.153 – 10.166.85.158 | 10.166.85.159 |
| 53 | 10.166.85.160/29 | 10.166.85.161 – 10.166.85.166 | 10.166.85.167 |
| 54 | 10.166.85.168/29 | 10.166.85.169 – 10.166.85.174 | 10.166.85.175 |
| 55 | 10.166.85.176/29 | 10.166.85.177 – 10.166.85.182 | 10.166.85.183 |
| 56 | 10.166.85.184/29 | 10.166.85.185 – 10.166.85.190 | 10.166.85.191 |
| 57 | 10.166.85.192/29 | 10.166.85.193 – 10.166.85.198 | 10.166.85.199 |
| 58 | 10.166.85.200/29 | 10.166.85.201 – 10.166.85.206 | 10.166.85.207 |
| 59 | 10.166.85.208/29 | 10.166.85.209 – 10.166.85.214 | 10.166.85.215 |
| 60 | 10.166.85.216/29 | 10.166.85.217 – 10.166.85.222 | 10.166.85.223 |
| 61 | 10.166.85.224/29 | 10.166.85.225 – 10.166.85.230 | 10.166.85.231 |
| 62 | 10.166.85.232/29 | 10.166.85.233 – 10.166.85.238 | 10.166.85.239 |
| 63 | 10.166.85.240/29 | 10.166.85.241 – 10.166.85.246 | 10.166.85.247 |
| 64 | 10.166.85.248/29 | 10.166.85.249 – 10.166.85.254 | 10.166.85.255 |
| 65 | 10.166.86.0/29 | 10.166.86.1 – 10.166.86.6 | 10.166.86.7 |
| 66 | 10.166.86.8/29 | 10.166.86.9 – 10.166.86.14 | 10.166.86.15 |
| 67 | 10.166.86.16/29 | 10.166.86.17 – 10.166.86.22 | 10.166.86.23 |
| 68 | 10.166.86.24/29 | 10.166.86.25 – 10.166.86.30 | 10.166.86.31 |
| 69 | 10.166.86.32/29 | 10.166.86.33 – 10.166.86.38 | 10.166.86.39 |
| 70 | 10.166.86.40/29 | 10.166.86.41 – 10.166.86.46 | 10.166.86.47 |
| 71 | 10.166.86.48/29 | 10.166.86.49 – 10.166.86.54 | 10.166.86.55 |
| 72 | 10.166.86.56/29 | 10.166.86.57 – 10.166.86.62 | 10.166.86.63 |
| 73 | 10.166.86.64/29 | 10.166.86.65 – 10.166.86.70 | 10.166.86.71 |
| 74 | 10.166.86.72/29 | 10.166.86.73 – 10.166.86.78 | 10.166.86.79 |
| 75 | 10.166.86.80/29 | 10.166.86.81 – 10.166.86.86 | 10.166.86.87 |
| 76 | 10.166.86.88/29 | 10.166.86.89 – 10.166.86.94 | 10.166.86.95 |
| 77 | 10.166.86.96/29 | 10.166.86.97 – 10.166.86.102 | 10.166.86.103 |
| 78 | 10.166.86.104/29 | 10.166.86.105 – 10.166.86.110 | 10.166.86.111 |
| 79 | 10.166.86.112/29 | 10.166.86.113 – 10.166.86.118 | 10.166.86.119 |
| 80 | 10.166.86.120/29 | 10.166.86.121 – 10.166.86.126 | 10.166.86.127 |
| 81 | 10.166.86.128/29 | 10.166.86.129 – 10.166.86.134 | 10.166.86.135 |
| 82 | 10.166.86.136/29 | 10.166.86.137 – 10.166.86.142 | 10.166.86.143 |
| 83 | 10.166.86.144/29 | 10.166.86.145 – 10.166.86.150 | 10.166.86.151 |
| 84 | 10.166.86.152/29 | 10.166.86.153 – 10.166.86.158 | 10.166.86.159 |
| 85 | 10.166.86.160/29 | 10.166.86.161 – 10.166.86.166 | 10.166.86.167 |
| 86 | 10.166.86.168/29 | 10.166.86.169 – 10.166.86.174 | 10.166.86.175 |
| 87 | 10.166.86.176/29 | 10.166.86.177 – 10.166.86.182 | 10.166.86.183 |
| 88 | 10.166.86.184/29 | 10.166.86.185 – 10.166.86.190 | 10.166.86.191 |
| 89 | 10.166.86.192/29 | 10.166.86.193 – 10.166.86.198 | 10.166.86.199 |
| 90 | 10.166.86.200/29 | 10.166.86.201 – 10.166.86.206 | 10.166.86.207 |
| 91 | 10.166.86.208/29 | 10.166.86.209 – 10.166.86.214 | 10.166.86.215 |
| 92 | 10.166.86.216/29 | 10.166.86.217 – 10.166.86.222 | 10.166.86.223 |
| 93 | 10.166.86.224/29 | 10.166.86.225 – 10.166.86.230 | 10.166.86.231 |
| 94 | 10.166.86.232/29 | 10.166.86.233 – 10.166.86.238 | 10.166.86.239 |
| 95 | 10.166.86.240/29 | 10.166.86.241 – 10.166.86.246 | 10.166.86.247 |
| 96 | 10.166.86.248/29 | 10.166.86.249 – 10.166.86.254 | 10.166.86.255 |
| 97 | 10.166.87.0/29 | 10.166.87.1 – 10.166.87.6 | 10.166.87.7 |
| 98 | 10.166.87.8/29 | 10.166.87.9 – 10.166.87.14 | 10.166.87.15 |
| 99 | 10.166.87.16/29 | 10.166.87.17 – 10.166.87.22 | 10.166.87.23 |
| 100 | 10.166.87.24/29 | 10.166.87.25 – 10.166.87.30 | 10.166.87.31 |
| 101 | 10.166.87.32/29 | 10.166.87.33 – 10.166.87.38 | 10.166.87.39 |
| 102 | 10.166.87.40/29 | 10.166.87.41 – 10.166.87.46 | 10.166.87.47 |
| 103 | 10.166.87.48/29 | 10.166.87.49 – 10.166.87.54 | 10.166.87.55 |
| 104 | 10.166.87.56/29 | 10.166.87.57 – 10.166.87.62 | 10.166.87.63 |
| 105 | 10.166.87.64/29 | 10.166.87.65 – 10.166.87.70 | 10.166.87.71 |
| 106 | 10.166.87.72/29 | 10.166.87.73 – 10.166.87.78 | 10.166.87.79 |
| 107 | 10.166.87.80/29 | 10.166.87.81 – 10.166.87.86 | 10.166.87.87 |
| 108 | 10.166.87.88/29 | 10.166.87.89 – 10.166.87.94 | 10.166.87.95 |
| 109 | 10.166.87.96/29 | 10.166.87.97 – 10.166.87.102 | 10.166.87.103 |
| 110 | 10.166.87.104/29 | 10.166.87.105 – 10.166.87.110 | 10.166.87.111 |
| 111 | 10.166.87.112/29 | 10.166.87.113 – 10.166.87.118 | 10.166.87.119 |
| 112 | 10.166.87.120/29 | 10.166.87.121 – 10.166.87.126 | 10.166.87.127 |
| 113 | 10.166.87.128/29 | 10.166.87.129 – 10.166.87.134 | 10.166.87.135 |
| 114 | 10.166.87.136/29 | 10.166.87.137 – 10.166.87.142 | 10.166.87.143 |
| 115 | 10.166.87.144/29 | 10.166.87.145 – 10.166.87.150 | 10.166.87.151 |
| 116 | 10.166.87.152/29 | 10.166.87.153 – 10.166.87.158 | 10.166.87.159 |
| 117 | 10.166.87.160/29 | 10.166.87.161 – 10.166.87.166 | 10.166.87.167 |
| 118 | 10.166.87.168/29 | 10.166.87.169 – 10.166.87.174 | 10.166.87.175 |
| 119 | 10.166.87.176/29 | 10.166.87.177 – 10.166.87.182 | 10.166.87.183 |
| 120 | 10.166.87.184/29 | 10.166.87.185 – 10.166.87.190 | 10.166.87.191 |
| 121 | 10.166.87.192/29 | 10.166.87.193 – 10.166.87.198 | 10.166.87.199 |
| 122 | 10.166.87.200/29 | 10.166.87.201 – 10.166.87.206 | 10.166.87.207 |
| 123 | 10.166.87.208/29 | 10.166.87.209 – 10.166.87.214 | 10.166.87.215 |
| 124 | 10.166.87.216/29 | 10.166.87.217 – 10.166.87.222 | 10.166.87.223 |
| 125 | 10.166.87.224/29 | 10.166.87.225 – 10.166.87.230 | 10.166.87.231 |
| 126 | 10.166.87.232/29 | 10.166.87.233 – 10.166.87.238 | 10.166.87.239 |
| 127 | 10.166.87.240/29 | 10.166.87.241 – 10.166.87.246 | 10.166.87.247 |
| 128 | 10.166.87.248/29 | 10.166.87.249 – 10.166.87.254 | 10.166.87.255 |
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.