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)10.232.0.0/13
network10.232.0.0/13
broadcast10.239.255.255
first host10.232.0.1
last host10.239.255.254
subnet mask255.248.0.0
wildcard0.7.255.255
addresses524,288
usable hosts524,286
classA
ipcalc 10.232.0.0/13
address00001010.11101000.00000000.00000000
subnet mask11111111.11111000.00000000.00000000
network00001010.11101000.00000000.00000000
broadcast00001010.11101111.11111111.11111111
green = network part, grey = host part
hex0x0ae80000
decimal182976512
reverse dns0.0.232.10.in-addr.arpa
ipv4-mapped::ffff:ae8:0
/13 split into /20 · 128 subnets
close ×| # | network | host range | broadcast |
|---|---|---|---|
| 1 | 10.232.0.0/20 | 10.232.0.1 – 10.232.15.254 | 10.232.15.255 |
| 2 | 10.232.16.0/20 | 10.232.16.1 – 10.232.31.254 | 10.232.31.255 |
| 3 | 10.232.32.0/20 | 10.232.32.1 – 10.232.47.254 | 10.232.47.255 |
| 4 | 10.232.48.0/20 | 10.232.48.1 – 10.232.63.254 | 10.232.63.255 |
| 5 | 10.232.64.0/20 | 10.232.64.1 – 10.232.79.254 | 10.232.79.255 |
| 6 | 10.232.80.0/20 | 10.232.80.1 – 10.232.95.254 | 10.232.95.255 |
| 7 | 10.232.96.0/20 | 10.232.96.1 – 10.232.111.254 | 10.232.111.255 |
| 8 | 10.232.112.0/20 | 10.232.112.1 – 10.232.127.254 | 10.232.127.255 |
| 9 | 10.232.128.0/20 | 10.232.128.1 – 10.232.143.254 | 10.232.143.255 |
| 10 | 10.232.144.0/20 | 10.232.144.1 – 10.232.159.254 | 10.232.159.255 |
| 11 | 10.232.160.0/20 | 10.232.160.1 – 10.232.175.254 | 10.232.175.255 |
| 12 | 10.232.176.0/20 | 10.232.176.1 – 10.232.191.254 | 10.232.191.255 |
| 13 | 10.232.192.0/20 | 10.232.192.1 – 10.232.207.254 | 10.232.207.255 |
| 14 | 10.232.208.0/20 | 10.232.208.1 – 10.232.223.254 | 10.232.223.255 |
| 15 | 10.232.224.0/20 | 10.232.224.1 – 10.232.239.254 | 10.232.239.255 |
| 16 | 10.232.240.0/20 | 10.232.240.1 – 10.232.255.254 | 10.232.255.255 |
| 17 | 10.233.0.0/20 | 10.233.0.1 – 10.233.15.254 | 10.233.15.255 |
| 18 | 10.233.16.0/20 | 10.233.16.1 – 10.233.31.254 | 10.233.31.255 |
| 19 | 10.233.32.0/20 | 10.233.32.1 – 10.233.47.254 | 10.233.47.255 |
| 20 | 10.233.48.0/20 | 10.233.48.1 – 10.233.63.254 | 10.233.63.255 |
| 21 | 10.233.64.0/20 | 10.233.64.1 – 10.233.79.254 | 10.233.79.255 |
| 22 | 10.233.80.0/20 | 10.233.80.1 – 10.233.95.254 | 10.233.95.255 |
| 23 | 10.233.96.0/20 | 10.233.96.1 – 10.233.111.254 | 10.233.111.255 |
| 24 | 10.233.112.0/20 | 10.233.112.1 – 10.233.127.254 | 10.233.127.255 |
| 25 | 10.233.128.0/20 | 10.233.128.1 – 10.233.143.254 | 10.233.143.255 |
| 26 | 10.233.144.0/20 | 10.233.144.1 – 10.233.159.254 | 10.233.159.255 |
| 27 | 10.233.160.0/20 | 10.233.160.1 – 10.233.175.254 | 10.233.175.255 |
| 28 | 10.233.176.0/20 | 10.233.176.1 – 10.233.191.254 | 10.233.191.255 |
| 29 | 10.233.192.0/20 | 10.233.192.1 – 10.233.207.254 | 10.233.207.255 |
| 30 | 10.233.208.0/20 | 10.233.208.1 – 10.233.223.254 | 10.233.223.255 |
| 31 | 10.233.224.0/20 | 10.233.224.1 – 10.233.239.254 | 10.233.239.255 |
| 32 | 10.233.240.0/20 | 10.233.240.1 – 10.233.255.254 | 10.233.255.255 |
| 33 | 10.234.0.0/20 | 10.234.0.1 – 10.234.15.254 | 10.234.15.255 |
| 34 | 10.234.16.0/20 | 10.234.16.1 – 10.234.31.254 | 10.234.31.255 |
| 35 | 10.234.32.0/20 | 10.234.32.1 – 10.234.47.254 | 10.234.47.255 |
| 36 | 10.234.48.0/20 | 10.234.48.1 – 10.234.63.254 | 10.234.63.255 |
| 37 | 10.234.64.0/20 | 10.234.64.1 – 10.234.79.254 | 10.234.79.255 |
| 38 | 10.234.80.0/20 | 10.234.80.1 – 10.234.95.254 | 10.234.95.255 |
| 39 | 10.234.96.0/20 | 10.234.96.1 – 10.234.111.254 | 10.234.111.255 |
| 40 | 10.234.112.0/20 | 10.234.112.1 – 10.234.127.254 | 10.234.127.255 |
| 41 | 10.234.128.0/20 | 10.234.128.1 – 10.234.143.254 | 10.234.143.255 |
| 42 | 10.234.144.0/20 | 10.234.144.1 – 10.234.159.254 | 10.234.159.255 |
| 43 | 10.234.160.0/20 | 10.234.160.1 – 10.234.175.254 | 10.234.175.255 |
| 44 | 10.234.176.0/20 | 10.234.176.1 – 10.234.191.254 | 10.234.191.255 |
| 45 | 10.234.192.0/20 | 10.234.192.1 – 10.234.207.254 | 10.234.207.255 |
| 46 | 10.234.208.0/20 | 10.234.208.1 – 10.234.223.254 | 10.234.223.255 |
| 47 | 10.234.224.0/20 | 10.234.224.1 – 10.234.239.254 | 10.234.239.255 |
| 48 | 10.234.240.0/20 | 10.234.240.1 – 10.234.255.254 | 10.234.255.255 |
| 49 | 10.235.0.0/20 | 10.235.0.1 – 10.235.15.254 | 10.235.15.255 |
| 50 | 10.235.16.0/20 | 10.235.16.1 – 10.235.31.254 | 10.235.31.255 |
| 51 | 10.235.32.0/20 | 10.235.32.1 – 10.235.47.254 | 10.235.47.255 |
| 52 | 10.235.48.0/20 | 10.235.48.1 – 10.235.63.254 | 10.235.63.255 |
| 53 | 10.235.64.0/20 | 10.235.64.1 – 10.235.79.254 | 10.235.79.255 |
| 54 | 10.235.80.0/20 | 10.235.80.1 – 10.235.95.254 | 10.235.95.255 |
| 55 | 10.235.96.0/20 | 10.235.96.1 – 10.235.111.254 | 10.235.111.255 |
| 56 | 10.235.112.0/20 | 10.235.112.1 – 10.235.127.254 | 10.235.127.255 |
| 57 | 10.235.128.0/20 | 10.235.128.1 – 10.235.143.254 | 10.235.143.255 |
| 58 | 10.235.144.0/20 | 10.235.144.1 – 10.235.159.254 | 10.235.159.255 |
| 59 | 10.235.160.0/20 | 10.235.160.1 – 10.235.175.254 | 10.235.175.255 |
| 60 | 10.235.176.0/20 | 10.235.176.1 – 10.235.191.254 | 10.235.191.255 |
| 61 | 10.235.192.0/20 | 10.235.192.1 – 10.235.207.254 | 10.235.207.255 |
| 62 | 10.235.208.0/20 | 10.235.208.1 – 10.235.223.254 | 10.235.223.255 |
| 63 | 10.235.224.0/20 | 10.235.224.1 – 10.235.239.254 | 10.235.239.255 |
| 64 | 10.235.240.0/20 | 10.235.240.1 – 10.235.255.254 | 10.235.255.255 |
| 65 | 10.236.0.0/20 | 10.236.0.1 – 10.236.15.254 | 10.236.15.255 |
| 66 | 10.236.16.0/20 | 10.236.16.1 – 10.236.31.254 | 10.236.31.255 |
| 67 | 10.236.32.0/20 | 10.236.32.1 – 10.236.47.254 | 10.236.47.255 |
| 68 | 10.236.48.0/20 | 10.236.48.1 – 10.236.63.254 | 10.236.63.255 |
| 69 | 10.236.64.0/20 | 10.236.64.1 – 10.236.79.254 | 10.236.79.255 |
| 70 | 10.236.80.0/20 | 10.236.80.1 – 10.236.95.254 | 10.236.95.255 |
| 71 | 10.236.96.0/20 | 10.236.96.1 – 10.236.111.254 | 10.236.111.255 |
| 72 | 10.236.112.0/20 | 10.236.112.1 – 10.236.127.254 | 10.236.127.255 |
| 73 | 10.236.128.0/20 | 10.236.128.1 – 10.236.143.254 | 10.236.143.255 |
| 74 | 10.236.144.0/20 | 10.236.144.1 – 10.236.159.254 | 10.236.159.255 |
| 75 | 10.236.160.0/20 | 10.236.160.1 – 10.236.175.254 | 10.236.175.255 |
| 76 | 10.236.176.0/20 | 10.236.176.1 – 10.236.191.254 | 10.236.191.255 |
| 77 | 10.236.192.0/20 | 10.236.192.1 – 10.236.207.254 | 10.236.207.255 |
| 78 | 10.236.208.0/20 | 10.236.208.1 – 10.236.223.254 | 10.236.223.255 |
| 79 | 10.236.224.0/20 | 10.236.224.1 – 10.236.239.254 | 10.236.239.255 |
| 80 | 10.236.240.0/20 | 10.236.240.1 – 10.236.255.254 | 10.236.255.255 |
| 81 | 10.237.0.0/20 | 10.237.0.1 – 10.237.15.254 | 10.237.15.255 |
| 82 | 10.237.16.0/20 | 10.237.16.1 – 10.237.31.254 | 10.237.31.255 |
| 83 | 10.237.32.0/20 | 10.237.32.1 – 10.237.47.254 | 10.237.47.255 |
| 84 | 10.237.48.0/20 | 10.237.48.1 – 10.237.63.254 | 10.237.63.255 |
| 85 | 10.237.64.0/20 | 10.237.64.1 – 10.237.79.254 | 10.237.79.255 |
| 86 | 10.237.80.0/20 | 10.237.80.1 – 10.237.95.254 | 10.237.95.255 |
| 87 | 10.237.96.0/20 | 10.237.96.1 – 10.237.111.254 | 10.237.111.255 |
| 88 | 10.237.112.0/20 | 10.237.112.1 – 10.237.127.254 | 10.237.127.255 |
| 89 | 10.237.128.0/20 | 10.237.128.1 – 10.237.143.254 | 10.237.143.255 |
| 90 | 10.237.144.0/20 | 10.237.144.1 – 10.237.159.254 | 10.237.159.255 |
| 91 | 10.237.160.0/20 | 10.237.160.1 – 10.237.175.254 | 10.237.175.255 |
| 92 | 10.237.176.0/20 | 10.237.176.1 – 10.237.191.254 | 10.237.191.255 |
| 93 | 10.237.192.0/20 | 10.237.192.1 – 10.237.207.254 | 10.237.207.255 |
| 94 | 10.237.208.0/20 | 10.237.208.1 – 10.237.223.254 | 10.237.223.255 |
| 95 | 10.237.224.0/20 | 10.237.224.1 – 10.237.239.254 | 10.237.239.255 |
| 96 | 10.237.240.0/20 | 10.237.240.1 – 10.237.255.254 | 10.237.255.255 |
| 97 | 10.238.0.0/20 | 10.238.0.1 – 10.238.15.254 | 10.238.15.255 |
| 98 | 10.238.16.0/20 | 10.238.16.1 – 10.238.31.254 | 10.238.31.255 |
| 99 | 10.238.32.0/20 | 10.238.32.1 – 10.238.47.254 | 10.238.47.255 |
| 100 | 10.238.48.0/20 | 10.238.48.1 – 10.238.63.254 | 10.238.63.255 |
| 101 | 10.238.64.0/20 | 10.238.64.1 – 10.238.79.254 | 10.238.79.255 |
| 102 | 10.238.80.0/20 | 10.238.80.1 – 10.238.95.254 | 10.238.95.255 |
| 103 | 10.238.96.0/20 | 10.238.96.1 – 10.238.111.254 | 10.238.111.255 |
| 104 | 10.238.112.0/20 | 10.238.112.1 – 10.238.127.254 | 10.238.127.255 |
| 105 | 10.238.128.0/20 | 10.238.128.1 – 10.238.143.254 | 10.238.143.255 |
| 106 | 10.238.144.0/20 | 10.238.144.1 – 10.238.159.254 | 10.238.159.255 |
| 107 | 10.238.160.0/20 | 10.238.160.1 – 10.238.175.254 | 10.238.175.255 |
| 108 | 10.238.176.0/20 | 10.238.176.1 – 10.238.191.254 | 10.238.191.255 |
| 109 | 10.238.192.0/20 | 10.238.192.1 – 10.238.207.254 | 10.238.207.255 |
| 110 | 10.238.208.0/20 | 10.238.208.1 – 10.238.223.254 | 10.238.223.255 |
| 111 | 10.238.224.0/20 | 10.238.224.1 – 10.238.239.254 | 10.238.239.255 |
| 112 | 10.238.240.0/20 | 10.238.240.1 – 10.238.255.254 | 10.238.255.255 |
| 113 | 10.239.0.0/20 | 10.239.0.1 – 10.239.15.254 | 10.239.15.255 |
| 114 | 10.239.16.0/20 | 10.239.16.1 – 10.239.31.254 | 10.239.31.255 |
| 115 | 10.239.32.0/20 | 10.239.32.1 – 10.239.47.254 | 10.239.47.255 |
| 116 | 10.239.48.0/20 | 10.239.48.1 – 10.239.63.254 | 10.239.63.255 |
| 117 | 10.239.64.0/20 | 10.239.64.1 – 10.239.79.254 | 10.239.79.255 |
| 118 | 10.239.80.0/20 | 10.239.80.1 – 10.239.95.254 | 10.239.95.255 |
| 119 | 10.239.96.0/20 | 10.239.96.1 – 10.239.111.254 | 10.239.111.255 |
| 120 | 10.239.112.0/20 | 10.239.112.1 – 10.239.127.254 | 10.239.127.255 |
| 121 | 10.239.128.0/20 | 10.239.128.1 – 10.239.143.254 | 10.239.143.255 |
| 122 | 10.239.144.0/20 | 10.239.144.1 – 10.239.159.254 | 10.239.159.255 |
| 123 | 10.239.160.0/20 | 10.239.160.1 – 10.239.175.254 | 10.239.175.255 |
| 124 | 10.239.176.0/20 | 10.239.176.1 – 10.239.191.254 | 10.239.191.255 |
| 125 | 10.239.192.0/20 | 10.239.192.1 – 10.239.207.254 | 10.239.207.255 |
| 126 | 10.239.208.0/20 | 10.239.208.1 – 10.239.223.254 | 10.239.223.255 |
| 127 | 10.239.224.0/20 | 10.239.224.1 – 10.239.239.254 | 10.239.239.255 |
| 128 | 10.239.240.0/20 | 10.239.240.1 – 10.239.255.254 | 10.239.255.255 |
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 /13 |
|---|---|---|---|---|
| /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 | 1 |
| /14 | 255.252.0.0 | 262,144 | 262,142 | 2 split → |
| /15 | 255.254.0.0 | 131,072 | 131,070 | 4 split → |
| /16 | 255.255.0.0 | 65,536 | 65,534 | 8 split → |
| /17 | 255.255.128.0 | 32,768 | 32,766 | 16 split → |
| /18 | 255.255.192.0 | 16,384 | 16,382 | 32 split → |
| /19 | 255.255.224.0 | 8,192 | 8,190 | 64 split → |
| /20 | 255.255.240.0 | 4,096 | 4,094 | 128 split → |
| /21 | 255.255.248.0 | 2,048 | 2,046 | 256 split → |
| /22 | 255.255.252.0 | 1,024 | 1,022 | 512 split → |
| /23 | 255.255.254.0 | 512 | 510 | 1,024 split → |
| /24 | 255.255.255.0 | 256 | 254 | 2,048 split → |
| /25 | 255.255.255.128 | 128 | 126 | 4,096 split → |
| /26 | 255.255.255.192 | 64 | 62 | 8,192 split → |
| /27 | 255.255.255.224 | 32 | 30 | 16,384 split → |
| /28 | 255.255.255.240 | 16 | 14 | 32,768 split → |
| /29 | 255.255.255.248 | 8 | 6 | 65,536 split → |
| /30 | 255.255.255.252 | 4 | 2 | 131,072 split → |
| /31 | 255.255.255.254 | 2 | 2 | 262,144 split → |
| /32 | 255.255.255.255 | 1 | 1 | 524,288 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.