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)10.16.160.0/19
network10.16.160.0/19
broadcast10.16.191.255
first host10.16.160.1
last host10.16.191.254
subnet mask255.255.224.0
wildcard0.0.31.255
addresses8,192
usable hosts8,190
classA
ipcalc 10.16.160.0/19
address00001010.00010000.10100000.00000000
subnet mask11111111.11111111.11100000.00000000
network00001010.00010000.10100000.00000000
broadcast00001010.00010000.10111111.11111111
green = network part, grey = host part
hex0x0a10a000
decimal168861696
reverse dns0.160.16.10.in-addr.arpa
ipv4-mapped::ffff:a10:a000
/19 split into /26 · 128 subnets
close ×| # | network | host range | broadcast |
|---|---|---|---|
| 1 | 10.16.160.0/26 | 10.16.160.1 – 10.16.160.62 | 10.16.160.63 |
| 2 | 10.16.160.64/26 | 10.16.160.65 – 10.16.160.126 | 10.16.160.127 |
| 3 | 10.16.160.128/26 | 10.16.160.129 – 10.16.160.190 | 10.16.160.191 |
| 4 | 10.16.160.192/26 | 10.16.160.193 – 10.16.160.254 | 10.16.160.255 |
| 5 | 10.16.161.0/26 | 10.16.161.1 – 10.16.161.62 | 10.16.161.63 |
| 6 | 10.16.161.64/26 | 10.16.161.65 – 10.16.161.126 | 10.16.161.127 |
| 7 | 10.16.161.128/26 | 10.16.161.129 – 10.16.161.190 | 10.16.161.191 |
| 8 | 10.16.161.192/26 | 10.16.161.193 – 10.16.161.254 | 10.16.161.255 |
| 9 | 10.16.162.0/26 | 10.16.162.1 – 10.16.162.62 | 10.16.162.63 |
| 10 | 10.16.162.64/26 | 10.16.162.65 – 10.16.162.126 | 10.16.162.127 |
| 11 | 10.16.162.128/26 | 10.16.162.129 – 10.16.162.190 | 10.16.162.191 |
| 12 | 10.16.162.192/26 | 10.16.162.193 – 10.16.162.254 | 10.16.162.255 |
| 13 | 10.16.163.0/26 | 10.16.163.1 – 10.16.163.62 | 10.16.163.63 |
| 14 | 10.16.163.64/26 | 10.16.163.65 – 10.16.163.126 | 10.16.163.127 |
| 15 | 10.16.163.128/26 | 10.16.163.129 – 10.16.163.190 | 10.16.163.191 |
| 16 | 10.16.163.192/26 | 10.16.163.193 – 10.16.163.254 | 10.16.163.255 |
| 17 | 10.16.164.0/26 | 10.16.164.1 – 10.16.164.62 | 10.16.164.63 |
| 18 | 10.16.164.64/26 | 10.16.164.65 – 10.16.164.126 | 10.16.164.127 |
| 19 | 10.16.164.128/26 | 10.16.164.129 – 10.16.164.190 | 10.16.164.191 |
| 20 | 10.16.164.192/26 | 10.16.164.193 – 10.16.164.254 | 10.16.164.255 |
| 21 | 10.16.165.0/26 | 10.16.165.1 – 10.16.165.62 | 10.16.165.63 |
| 22 | 10.16.165.64/26 | 10.16.165.65 – 10.16.165.126 | 10.16.165.127 |
| 23 | 10.16.165.128/26 | 10.16.165.129 – 10.16.165.190 | 10.16.165.191 |
| 24 | 10.16.165.192/26 | 10.16.165.193 – 10.16.165.254 | 10.16.165.255 |
| 25 | 10.16.166.0/26 | 10.16.166.1 – 10.16.166.62 | 10.16.166.63 |
| 26 | 10.16.166.64/26 | 10.16.166.65 – 10.16.166.126 | 10.16.166.127 |
| 27 | 10.16.166.128/26 | 10.16.166.129 – 10.16.166.190 | 10.16.166.191 |
| 28 | 10.16.166.192/26 | 10.16.166.193 – 10.16.166.254 | 10.16.166.255 |
| 29 | 10.16.167.0/26 | 10.16.167.1 – 10.16.167.62 | 10.16.167.63 |
| 30 | 10.16.167.64/26 | 10.16.167.65 – 10.16.167.126 | 10.16.167.127 |
| 31 | 10.16.167.128/26 | 10.16.167.129 – 10.16.167.190 | 10.16.167.191 |
| 32 | 10.16.167.192/26 | 10.16.167.193 – 10.16.167.254 | 10.16.167.255 |
| 33 | 10.16.168.0/26 | 10.16.168.1 – 10.16.168.62 | 10.16.168.63 |
| 34 | 10.16.168.64/26 | 10.16.168.65 – 10.16.168.126 | 10.16.168.127 |
| 35 | 10.16.168.128/26 | 10.16.168.129 – 10.16.168.190 | 10.16.168.191 |
| 36 | 10.16.168.192/26 | 10.16.168.193 – 10.16.168.254 | 10.16.168.255 |
| 37 | 10.16.169.0/26 | 10.16.169.1 – 10.16.169.62 | 10.16.169.63 |
| 38 | 10.16.169.64/26 | 10.16.169.65 – 10.16.169.126 | 10.16.169.127 |
| 39 | 10.16.169.128/26 | 10.16.169.129 – 10.16.169.190 | 10.16.169.191 |
| 40 | 10.16.169.192/26 | 10.16.169.193 – 10.16.169.254 | 10.16.169.255 |
| 41 | 10.16.170.0/26 | 10.16.170.1 – 10.16.170.62 | 10.16.170.63 |
| 42 | 10.16.170.64/26 | 10.16.170.65 – 10.16.170.126 | 10.16.170.127 |
| 43 | 10.16.170.128/26 | 10.16.170.129 – 10.16.170.190 | 10.16.170.191 |
| 44 | 10.16.170.192/26 | 10.16.170.193 – 10.16.170.254 | 10.16.170.255 |
| 45 | 10.16.171.0/26 | 10.16.171.1 – 10.16.171.62 | 10.16.171.63 |
| 46 | 10.16.171.64/26 | 10.16.171.65 – 10.16.171.126 | 10.16.171.127 |
| 47 | 10.16.171.128/26 | 10.16.171.129 – 10.16.171.190 | 10.16.171.191 |
| 48 | 10.16.171.192/26 | 10.16.171.193 – 10.16.171.254 | 10.16.171.255 |
| 49 | 10.16.172.0/26 | 10.16.172.1 – 10.16.172.62 | 10.16.172.63 |
| 50 | 10.16.172.64/26 | 10.16.172.65 – 10.16.172.126 | 10.16.172.127 |
| 51 | 10.16.172.128/26 | 10.16.172.129 – 10.16.172.190 | 10.16.172.191 |
| 52 | 10.16.172.192/26 | 10.16.172.193 – 10.16.172.254 | 10.16.172.255 |
| 53 | 10.16.173.0/26 | 10.16.173.1 – 10.16.173.62 | 10.16.173.63 |
| 54 | 10.16.173.64/26 | 10.16.173.65 – 10.16.173.126 | 10.16.173.127 |
| 55 | 10.16.173.128/26 | 10.16.173.129 – 10.16.173.190 | 10.16.173.191 |
| 56 | 10.16.173.192/26 | 10.16.173.193 – 10.16.173.254 | 10.16.173.255 |
| 57 | 10.16.174.0/26 | 10.16.174.1 – 10.16.174.62 | 10.16.174.63 |
| 58 | 10.16.174.64/26 | 10.16.174.65 – 10.16.174.126 | 10.16.174.127 |
| 59 | 10.16.174.128/26 | 10.16.174.129 – 10.16.174.190 | 10.16.174.191 |
| 60 | 10.16.174.192/26 | 10.16.174.193 – 10.16.174.254 | 10.16.174.255 |
| 61 | 10.16.175.0/26 | 10.16.175.1 – 10.16.175.62 | 10.16.175.63 |
| 62 | 10.16.175.64/26 | 10.16.175.65 – 10.16.175.126 | 10.16.175.127 |
| 63 | 10.16.175.128/26 | 10.16.175.129 – 10.16.175.190 | 10.16.175.191 |
| 64 | 10.16.175.192/26 | 10.16.175.193 – 10.16.175.254 | 10.16.175.255 |
| 65 | 10.16.176.0/26 | 10.16.176.1 – 10.16.176.62 | 10.16.176.63 |
| 66 | 10.16.176.64/26 | 10.16.176.65 – 10.16.176.126 | 10.16.176.127 |
| 67 | 10.16.176.128/26 | 10.16.176.129 – 10.16.176.190 | 10.16.176.191 |
| 68 | 10.16.176.192/26 | 10.16.176.193 – 10.16.176.254 | 10.16.176.255 |
| 69 | 10.16.177.0/26 | 10.16.177.1 – 10.16.177.62 | 10.16.177.63 |
| 70 | 10.16.177.64/26 | 10.16.177.65 – 10.16.177.126 | 10.16.177.127 |
| 71 | 10.16.177.128/26 | 10.16.177.129 – 10.16.177.190 | 10.16.177.191 |
| 72 | 10.16.177.192/26 | 10.16.177.193 – 10.16.177.254 | 10.16.177.255 |
| 73 | 10.16.178.0/26 | 10.16.178.1 – 10.16.178.62 | 10.16.178.63 |
| 74 | 10.16.178.64/26 | 10.16.178.65 – 10.16.178.126 | 10.16.178.127 |
| 75 | 10.16.178.128/26 | 10.16.178.129 – 10.16.178.190 | 10.16.178.191 |
| 76 | 10.16.178.192/26 | 10.16.178.193 – 10.16.178.254 | 10.16.178.255 |
| 77 | 10.16.179.0/26 | 10.16.179.1 – 10.16.179.62 | 10.16.179.63 |
| 78 | 10.16.179.64/26 | 10.16.179.65 – 10.16.179.126 | 10.16.179.127 |
| 79 | 10.16.179.128/26 | 10.16.179.129 – 10.16.179.190 | 10.16.179.191 |
| 80 | 10.16.179.192/26 | 10.16.179.193 – 10.16.179.254 | 10.16.179.255 |
| 81 | 10.16.180.0/26 | 10.16.180.1 – 10.16.180.62 | 10.16.180.63 |
| 82 | 10.16.180.64/26 | 10.16.180.65 – 10.16.180.126 | 10.16.180.127 |
| 83 | 10.16.180.128/26 | 10.16.180.129 – 10.16.180.190 | 10.16.180.191 |
| 84 | 10.16.180.192/26 | 10.16.180.193 – 10.16.180.254 | 10.16.180.255 |
| 85 | 10.16.181.0/26 | 10.16.181.1 – 10.16.181.62 | 10.16.181.63 |
| 86 | 10.16.181.64/26 | 10.16.181.65 – 10.16.181.126 | 10.16.181.127 |
| 87 | 10.16.181.128/26 | 10.16.181.129 – 10.16.181.190 | 10.16.181.191 |
| 88 | 10.16.181.192/26 | 10.16.181.193 – 10.16.181.254 | 10.16.181.255 |
| 89 | 10.16.182.0/26 | 10.16.182.1 – 10.16.182.62 | 10.16.182.63 |
| 90 | 10.16.182.64/26 | 10.16.182.65 – 10.16.182.126 | 10.16.182.127 |
| 91 | 10.16.182.128/26 | 10.16.182.129 – 10.16.182.190 | 10.16.182.191 |
| 92 | 10.16.182.192/26 | 10.16.182.193 – 10.16.182.254 | 10.16.182.255 |
| 93 | 10.16.183.0/26 | 10.16.183.1 – 10.16.183.62 | 10.16.183.63 |
| 94 | 10.16.183.64/26 | 10.16.183.65 – 10.16.183.126 | 10.16.183.127 |
| 95 | 10.16.183.128/26 | 10.16.183.129 – 10.16.183.190 | 10.16.183.191 |
| 96 | 10.16.183.192/26 | 10.16.183.193 – 10.16.183.254 | 10.16.183.255 |
| 97 | 10.16.184.0/26 | 10.16.184.1 – 10.16.184.62 | 10.16.184.63 |
| 98 | 10.16.184.64/26 | 10.16.184.65 – 10.16.184.126 | 10.16.184.127 |
| 99 | 10.16.184.128/26 | 10.16.184.129 – 10.16.184.190 | 10.16.184.191 |
| 100 | 10.16.184.192/26 | 10.16.184.193 – 10.16.184.254 | 10.16.184.255 |
| 101 | 10.16.185.0/26 | 10.16.185.1 – 10.16.185.62 | 10.16.185.63 |
| 102 | 10.16.185.64/26 | 10.16.185.65 – 10.16.185.126 | 10.16.185.127 |
| 103 | 10.16.185.128/26 | 10.16.185.129 – 10.16.185.190 | 10.16.185.191 |
| 104 | 10.16.185.192/26 | 10.16.185.193 – 10.16.185.254 | 10.16.185.255 |
| 105 | 10.16.186.0/26 | 10.16.186.1 – 10.16.186.62 | 10.16.186.63 |
| 106 | 10.16.186.64/26 | 10.16.186.65 – 10.16.186.126 | 10.16.186.127 |
| 107 | 10.16.186.128/26 | 10.16.186.129 – 10.16.186.190 | 10.16.186.191 |
| 108 | 10.16.186.192/26 | 10.16.186.193 – 10.16.186.254 | 10.16.186.255 |
| 109 | 10.16.187.0/26 | 10.16.187.1 – 10.16.187.62 | 10.16.187.63 |
| 110 | 10.16.187.64/26 | 10.16.187.65 – 10.16.187.126 | 10.16.187.127 |
| 111 | 10.16.187.128/26 | 10.16.187.129 – 10.16.187.190 | 10.16.187.191 |
| 112 | 10.16.187.192/26 | 10.16.187.193 – 10.16.187.254 | 10.16.187.255 |
| 113 | 10.16.188.0/26 | 10.16.188.1 – 10.16.188.62 | 10.16.188.63 |
| 114 | 10.16.188.64/26 | 10.16.188.65 – 10.16.188.126 | 10.16.188.127 |
| 115 | 10.16.188.128/26 | 10.16.188.129 – 10.16.188.190 | 10.16.188.191 |
| 116 | 10.16.188.192/26 | 10.16.188.193 – 10.16.188.254 | 10.16.188.255 |
| 117 | 10.16.189.0/26 | 10.16.189.1 – 10.16.189.62 | 10.16.189.63 |
| 118 | 10.16.189.64/26 | 10.16.189.65 – 10.16.189.126 | 10.16.189.127 |
| 119 | 10.16.189.128/26 | 10.16.189.129 – 10.16.189.190 | 10.16.189.191 |
| 120 | 10.16.189.192/26 | 10.16.189.193 – 10.16.189.254 | 10.16.189.255 |
| 121 | 10.16.190.0/26 | 10.16.190.1 – 10.16.190.62 | 10.16.190.63 |
| 122 | 10.16.190.64/26 | 10.16.190.65 – 10.16.190.126 | 10.16.190.127 |
| 123 | 10.16.190.128/26 | 10.16.190.129 – 10.16.190.190 | 10.16.190.191 |
| 124 | 10.16.190.192/26 | 10.16.190.193 – 10.16.190.254 | 10.16.190.255 |
| 125 | 10.16.191.0/26 | 10.16.191.1 – 10.16.191.62 | 10.16.191.63 |
| 126 | 10.16.191.64/26 | 10.16.191.65 – 10.16.191.126 | 10.16.191.127 |
| 127 | 10.16.191.128/26 | 10.16.191.129 – 10.16.191.190 | 10.16.191.191 |
| 128 | 10.16.191.192/26 | 10.16.191.193 – 10.16.191.254 | 10.16.191.255 |
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 /19 |
|---|---|---|---|---|
| /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 | 1 |
| /20 | 255.255.240.0 | 4,096 | 4,094 | 2 split → |
| /21 | 255.255.248.0 | 2,048 | 2,046 | 4 split → |
| /22 | 255.255.252.0 | 1,024 | 1,022 | 8 split → |
| /23 | 255.255.254.0 | 512 | 510 | 16 split → |
| /24 | 255.255.255.0 | 256 | 254 | 32 split → |
| /25 | 255.255.255.128 | 128 | 126 | 64 split → |
| /26 | 255.255.255.192 | 64 | 62 | 128 split → |
| /27 | 255.255.255.224 | 32 | 30 | 256 split → |
| /28 | 255.255.255.240 | 16 | 14 | 512 split → |
| /29 | 255.255.255.248 | 8 | 6 | 1,024 split → |
| /30 | 255.255.255.252 | 4 | 2 | 2,048 split → |
| /31 | 255.255.255.254 | 2 | 2 | 4,096 split → |
| /32 | 255.255.255.255 | 1 | 1 | 8,192 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.