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)10.26.96.0/20
network10.26.96.0/20
broadcast10.26.111.255
first host10.26.96.1
last host10.26.111.254
subnet mask255.255.240.0
wildcard0.0.15.255
addresses4,096
usable hosts4,094
classA
ipcalc 10.26.96.0/20
address00001010.00011010.01100000.00000000
subnet mask11111111.11111111.11110000.00000000
network00001010.00011010.01100000.00000000
broadcast00001010.00011010.01101111.11111111
green = network part, grey = host part
hex0x0a1a6000
decimal169500672
reverse dns0.96.26.10.in-addr.arpa
ipv4-mapped::ffff:a1a:6000
/20 split into /27 · 128 subnets
close ×| # | network | host range | broadcast |
|---|---|---|---|
| 1 | 10.26.96.0/27 | 10.26.96.1 – 10.26.96.30 | 10.26.96.31 |
| 2 | 10.26.96.32/27 | 10.26.96.33 – 10.26.96.62 | 10.26.96.63 |
| 3 | 10.26.96.64/27 | 10.26.96.65 – 10.26.96.94 | 10.26.96.95 |
| 4 | 10.26.96.96/27 | 10.26.96.97 – 10.26.96.126 | 10.26.96.127 |
| 5 | 10.26.96.128/27 | 10.26.96.129 – 10.26.96.158 | 10.26.96.159 |
| 6 | 10.26.96.160/27 | 10.26.96.161 – 10.26.96.190 | 10.26.96.191 |
| 7 | 10.26.96.192/27 | 10.26.96.193 – 10.26.96.222 | 10.26.96.223 |
| 8 | 10.26.96.224/27 | 10.26.96.225 – 10.26.96.254 | 10.26.96.255 |
| 9 | 10.26.97.0/27 | 10.26.97.1 – 10.26.97.30 | 10.26.97.31 |
| 10 | 10.26.97.32/27 | 10.26.97.33 – 10.26.97.62 | 10.26.97.63 |
| 11 | 10.26.97.64/27 | 10.26.97.65 – 10.26.97.94 | 10.26.97.95 |
| 12 | 10.26.97.96/27 | 10.26.97.97 – 10.26.97.126 | 10.26.97.127 |
| 13 | 10.26.97.128/27 | 10.26.97.129 – 10.26.97.158 | 10.26.97.159 |
| 14 | 10.26.97.160/27 | 10.26.97.161 – 10.26.97.190 | 10.26.97.191 |
| 15 | 10.26.97.192/27 | 10.26.97.193 – 10.26.97.222 | 10.26.97.223 |
| 16 | 10.26.97.224/27 | 10.26.97.225 – 10.26.97.254 | 10.26.97.255 |
| 17 | 10.26.98.0/27 | 10.26.98.1 – 10.26.98.30 | 10.26.98.31 |
| 18 | 10.26.98.32/27 | 10.26.98.33 – 10.26.98.62 | 10.26.98.63 |
| 19 | 10.26.98.64/27 | 10.26.98.65 – 10.26.98.94 | 10.26.98.95 |
| 20 | 10.26.98.96/27 | 10.26.98.97 – 10.26.98.126 | 10.26.98.127 |
| 21 | 10.26.98.128/27 | 10.26.98.129 – 10.26.98.158 | 10.26.98.159 |
| 22 | 10.26.98.160/27 | 10.26.98.161 – 10.26.98.190 | 10.26.98.191 |
| 23 | 10.26.98.192/27 | 10.26.98.193 – 10.26.98.222 | 10.26.98.223 |
| 24 | 10.26.98.224/27 | 10.26.98.225 – 10.26.98.254 | 10.26.98.255 |
| 25 | 10.26.99.0/27 | 10.26.99.1 – 10.26.99.30 | 10.26.99.31 |
| 26 | 10.26.99.32/27 | 10.26.99.33 – 10.26.99.62 | 10.26.99.63 |
| 27 | 10.26.99.64/27 | 10.26.99.65 – 10.26.99.94 | 10.26.99.95 |
| 28 | 10.26.99.96/27 | 10.26.99.97 – 10.26.99.126 | 10.26.99.127 |
| 29 | 10.26.99.128/27 | 10.26.99.129 – 10.26.99.158 | 10.26.99.159 |
| 30 | 10.26.99.160/27 | 10.26.99.161 – 10.26.99.190 | 10.26.99.191 |
| 31 | 10.26.99.192/27 | 10.26.99.193 – 10.26.99.222 | 10.26.99.223 |
| 32 | 10.26.99.224/27 | 10.26.99.225 – 10.26.99.254 | 10.26.99.255 |
| 33 | 10.26.100.0/27 | 10.26.100.1 – 10.26.100.30 | 10.26.100.31 |
| 34 | 10.26.100.32/27 | 10.26.100.33 – 10.26.100.62 | 10.26.100.63 |
| 35 | 10.26.100.64/27 | 10.26.100.65 – 10.26.100.94 | 10.26.100.95 |
| 36 | 10.26.100.96/27 | 10.26.100.97 – 10.26.100.126 | 10.26.100.127 |
| 37 | 10.26.100.128/27 | 10.26.100.129 – 10.26.100.158 | 10.26.100.159 |
| 38 | 10.26.100.160/27 | 10.26.100.161 – 10.26.100.190 | 10.26.100.191 |
| 39 | 10.26.100.192/27 | 10.26.100.193 – 10.26.100.222 | 10.26.100.223 |
| 40 | 10.26.100.224/27 | 10.26.100.225 – 10.26.100.254 | 10.26.100.255 |
| 41 | 10.26.101.0/27 | 10.26.101.1 – 10.26.101.30 | 10.26.101.31 |
| 42 | 10.26.101.32/27 | 10.26.101.33 – 10.26.101.62 | 10.26.101.63 |
| 43 | 10.26.101.64/27 | 10.26.101.65 – 10.26.101.94 | 10.26.101.95 |
| 44 | 10.26.101.96/27 | 10.26.101.97 – 10.26.101.126 | 10.26.101.127 |
| 45 | 10.26.101.128/27 | 10.26.101.129 – 10.26.101.158 | 10.26.101.159 |
| 46 | 10.26.101.160/27 | 10.26.101.161 – 10.26.101.190 | 10.26.101.191 |
| 47 | 10.26.101.192/27 | 10.26.101.193 – 10.26.101.222 | 10.26.101.223 |
| 48 | 10.26.101.224/27 | 10.26.101.225 – 10.26.101.254 | 10.26.101.255 |
| 49 | 10.26.102.0/27 | 10.26.102.1 – 10.26.102.30 | 10.26.102.31 |
| 50 | 10.26.102.32/27 | 10.26.102.33 – 10.26.102.62 | 10.26.102.63 |
| 51 | 10.26.102.64/27 | 10.26.102.65 – 10.26.102.94 | 10.26.102.95 |
| 52 | 10.26.102.96/27 | 10.26.102.97 – 10.26.102.126 | 10.26.102.127 |
| 53 | 10.26.102.128/27 | 10.26.102.129 – 10.26.102.158 | 10.26.102.159 |
| 54 | 10.26.102.160/27 | 10.26.102.161 – 10.26.102.190 | 10.26.102.191 |
| 55 | 10.26.102.192/27 | 10.26.102.193 – 10.26.102.222 | 10.26.102.223 |
| 56 | 10.26.102.224/27 | 10.26.102.225 – 10.26.102.254 | 10.26.102.255 |
| 57 | 10.26.103.0/27 | 10.26.103.1 – 10.26.103.30 | 10.26.103.31 |
| 58 | 10.26.103.32/27 | 10.26.103.33 – 10.26.103.62 | 10.26.103.63 |
| 59 | 10.26.103.64/27 | 10.26.103.65 – 10.26.103.94 | 10.26.103.95 |
| 60 | 10.26.103.96/27 | 10.26.103.97 – 10.26.103.126 | 10.26.103.127 |
| 61 | 10.26.103.128/27 | 10.26.103.129 – 10.26.103.158 | 10.26.103.159 |
| 62 | 10.26.103.160/27 | 10.26.103.161 – 10.26.103.190 | 10.26.103.191 |
| 63 | 10.26.103.192/27 | 10.26.103.193 – 10.26.103.222 | 10.26.103.223 |
| 64 | 10.26.103.224/27 | 10.26.103.225 – 10.26.103.254 | 10.26.103.255 |
| 65 | 10.26.104.0/27 | 10.26.104.1 – 10.26.104.30 | 10.26.104.31 |
| 66 | 10.26.104.32/27 | 10.26.104.33 – 10.26.104.62 | 10.26.104.63 |
| 67 | 10.26.104.64/27 | 10.26.104.65 – 10.26.104.94 | 10.26.104.95 |
| 68 | 10.26.104.96/27 | 10.26.104.97 – 10.26.104.126 | 10.26.104.127 |
| 69 | 10.26.104.128/27 | 10.26.104.129 – 10.26.104.158 | 10.26.104.159 |
| 70 | 10.26.104.160/27 | 10.26.104.161 – 10.26.104.190 | 10.26.104.191 |
| 71 | 10.26.104.192/27 | 10.26.104.193 – 10.26.104.222 | 10.26.104.223 |
| 72 | 10.26.104.224/27 | 10.26.104.225 – 10.26.104.254 | 10.26.104.255 |
| 73 | 10.26.105.0/27 | 10.26.105.1 – 10.26.105.30 | 10.26.105.31 |
| 74 | 10.26.105.32/27 | 10.26.105.33 – 10.26.105.62 | 10.26.105.63 |
| 75 | 10.26.105.64/27 | 10.26.105.65 – 10.26.105.94 | 10.26.105.95 |
| 76 | 10.26.105.96/27 | 10.26.105.97 – 10.26.105.126 | 10.26.105.127 |
| 77 | 10.26.105.128/27 | 10.26.105.129 – 10.26.105.158 | 10.26.105.159 |
| 78 | 10.26.105.160/27 | 10.26.105.161 – 10.26.105.190 | 10.26.105.191 |
| 79 | 10.26.105.192/27 | 10.26.105.193 – 10.26.105.222 | 10.26.105.223 |
| 80 | 10.26.105.224/27 | 10.26.105.225 – 10.26.105.254 | 10.26.105.255 |
| 81 | 10.26.106.0/27 | 10.26.106.1 – 10.26.106.30 | 10.26.106.31 |
| 82 | 10.26.106.32/27 | 10.26.106.33 – 10.26.106.62 | 10.26.106.63 |
| 83 | 10.26.106.64/27 | 10.26.106.65 – 10.26.106.94 | 10.26.106.95 |
| 84 | 10.26.106.96/27 | 10.26.106.97 – 10.26.106.126 | 10.26.106.127 |
| 85 | 10.26.106.128/27 | 10.26.106.129 – 10.26.106.158 | 10.26.106.159 |
| 86 | 10.26.106.160/27 | 10.26.106.161 – 10.26.106.190 | 10.26.106.191 |
| 87 | 10.26.106.192/27 | 10.26.106.193 – 10.26.106.222 | 10.26.106.223 |
| 88 | 10.26.106.224/27 | 10.26.106.225 – 10.26.106.254 | 10.26.106.255 |
| 89 | 10.26.107.0/27 | 10.26.107.1 – 10.26.107.30 | 10.26.107.31 |
| 90 | 10.26.107.32/27 | 10.26.107.33 – 10.26.107.62 | 10.26.107.63 |
| 91 | 10.26.107.64/27 | 10.26.107.65 – 10.26.107.94 | 10.26.107.95 |
| 92 | 10.26.107.96/27 | 10.26.107.97 – 10.26.107.126 | 10.26.107.127 |
| 93 | 10.26.107.128/27 | 10.26.107.129 – 10.26.107.158 | 10.26.107.159 |
| 94 | 10.26.107.160/27 | 10.26.107.161 – 10.26.107.190 | 10.26.107.191 |
| 95 | 10.26.107.192/27 | 10.26.107.193 – 10.26.107.222 | 10.26.107.223 |
| 96 | 10.26.107.224/27 | 10.26.107.225 – 10.26.107.254 | 10.26.107.255 |
| 97 | 10.26.108.0/27 | 10.26.108.1 – 10.26.108.30 | 10.26.108.31 |
| 98 | 10.26.108.32/27 | 10.26.108.33 – 10.26.108.62 | 10.26.108.63 |
| 99 | 10.26.108.64/27 | 10.26.108.65 – 10.26.108.94 | 10.26.108.95 |
| 100 | 10.26.108.96/27 | 10.26.108.97 – 10.26.108.126 | 10.26.108.127 |
| 101 | 10.26.108.128/27 | 10.26.108.129 – 10.26.108.158 | 10.26.108.159 |
| 102 | 10.26.108.160/27 | 10.26.108.161 – 10.26.108.190 | 10.26.108.191 |
| 103 | 10.26.108.192/27 | 10.26.108.193 – 10.26.108.222 | 10.26.108.223 |
| 104 | 10.26.108.224/27 | 10.26.108.225 – 10.26.108.254 | 10.26.108.255 |
| 105 | 10.26.109.0/27 | 10.26.109.1 – 10.26.109.30 | 10.26.109.31 |
| 106 | 10.26.109.32/27 | 10.26.109.33 – 10.26.109.62 | 10.26.109.63 |
| 107 | 10.26.109.64/27 | 10.26.109.65 – 10.26.109.94 | 10.26.109.95 |
| 108 | 10.26.109.96/27 | 10.26.109.97 – 10.26.109.126 | 10.26.109.127 |
| 109 | 10.26.109.128/27 | 10.26.109.129 – 10.26.109.158 | 10.26.109.159 |
| 110 | 10.26.109.160/27 | 10.26.109.161 – 10.26.109.190 | 10.26.109.191 |
| 111 | 10.26.109.192/27 | 10.26.109.193 – 10.26.109.222 | 10.26.109.223 |
| 112 | 10.26.109.224/27 | 10.26.109.225 – 10.26.109.254 | 10.26.109.255 |
| 113 | 10.26.110.0/27 | 10.26.110.1 – 10.26.110.30 | 10.26.110.31 |
| 114 | 10.26.110.32/27 | 10.26.110.33 – 10.26.110.62 | 10.26.110.63 |
| 115 | 10.26.110.64/27 | 10.26.110.65 – 10.26.110.94 | 10.26.110.95 |
| 116 | 10.26.110.96/27 | 10.26.110.97 – 10.26.110.126 | 10.26.110.127 |
| 117 | 10.26.110.128/27 | 10.26.110.129 – 10.26.110.158 | 10.26.110.159 |
| 118 | 10.26.110.160/27 | 10.26.110.161 – 10.26.110.190 | 10.26.110.191 |
| 119 | 10.26.110.192/27 | 10.26.110.193 – 10.26.110.222 | 10.26.110.223 |
| 120 | 10.26.110.224/27 | 10.26.110.225 – 10.26.110.254 | 10.26.110.255 |
| 121 | 10.26.111.0/27 | 10.26.111.1 – 10.26.111.30 | 10.26.111.31 |
| 122 | 10.26.111.32/27 | 10.26.111.33 – 10.26.111.62 | 10.26.111.63 |
| 123 | 10.26.111.64/27 | 10.26.111.65 – 10.26.111.94 | 10.26.111.95 |
| 124 | 10.26.111.96/27 | 10.26.111.97 – 10.26.111.126 | 10.26.111.127 |
| 125 | 10.26.111.128/27 | 10.26.111.129 – 10.26.111.158 | 10.26.111.159 |
| 126 | 10.26.111.160/27 | 10.26.111.161 – 10.26.111.190 | 10.26.111.191 |
| 127 | 10.26.111.192/27 | 10.26.111.193 – 10.26.111.222 | 10.26.111.223 |
| 128 | 10.26.111.224/27 | 10.26.111.225 – 10.26.111.254 | 10.26.111.255 |
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 /20 |
|---|---|---|---|---|
| /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 | 1 |
| /21 | 255.255.248.0 | 2,048 | 2,046 | 2 split → |
| /22 | 255.255.252.0 | 1,024 | 1,022 | 4 split → |
| /23 | 255.255.254.0 | 512 | 510 | 8 split → |
| /24 | 255.255.255.0 | 256 | 254 | 16 split → |
| /25 | 255.255.255.128 | 128 | 126 | 32 split → |
| /26 | 255.255.255.192 | 64 | 62 | 64 split → |
| /27 | 255.255.255.224 | 32 | 30 | 128 split → |
| /28 | 255.255.255.240 | 16 | 14 | 256 split → |
| /29 | 255.255.255.248 | 8 | 6 | 512 split → |
| /30 | 255.255.255.252 | 4 | 2 | 1,024 split → |
| /31 | 255.255.255.254 | 2 | 2 | 2,048 split → |
| /32 | 255.255.255.255 | 1 | 1 | 4,096 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.