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)10.48.0.0/13
network10.48.0.0/13
broadcast10.55.255.255
first host10.48.0.1
last host10.55.255.254
subnet mask255.248.0.0
wildcard0.7.255.255
addresses524,288
usable hosts524,286
classA
ipcalc 10.48.0.0/13
address00001010.00110000.00000000.00000000
subnet mask11111111.11111000.00000000.00000000
network00001010.00110000.00000000.00000000
broadcast00001010.00110111.11111111.11111111
green = network part, grey = host part
hex0x0a300000
decimal170917888
reverse dns0.0.48.10.in-addr.arpa
ipv4-mapped::ffff:a30:0
/13 split into /20 · 128 subnets
close ×| # | network | host range | broadcast |
|---|---|---|---|
| 1 | 10.48.0.0/20 | 10.48.0.1 – 10.48.15.254 | 10.48.15.255 |
| 2 | 10.48.16.0/20 | 10.48.16.1 – 10.48.31.254 | 10.48.31.255 |
| 3 | 10.48.32.0/20 | 10.48.32.1 – 10.48.47.254 | 10.48.47.255 |
| 4 | 10.48.48.0/20 | 10.48.48.1 – 10.48.63.254 | 10.48.63.255 |
| 5 | 10.48.64.0/20 | 10.48.64.1 – 10.48.79.254 | 10.48.79.255 |
| 6 | 10.48.80.0/20 | 10.48.80.1 – 10.48.95.254 | 10.48.95.255 |
| 7 | 10.48.96.0/20 | 10.48.96.1 – 10.48.111.254 | 10.48.111.255 |
| 8 | 10.48.112.0/20 | 10.48.112.1 – 10.48.127.254 | 10.48.127.255 |
| 9 | 10.48.128.0/20 | 10.48.128.1 – 10.48.143.254 | 10.48.143.255 |
| 10 | 10.48.144.0/20 | 10.48.144.1 – 10.48.159.254 | 10.48.159.255 |
| 11 | 10.48.160.0/20 | 10.48.160.1 – 10.48.175.254 | 10.48.175.255 |
| 12 | 10.48.176.0/20 | 10.48.176.1 – 10.48.191.254 | 10.48.191.255 |
| 13 | 10.48.192.0/20 | 10.48.192.1 – 10.48.207.254 | 10.48.207.255 |
| 14 | 10.48.208.0/20 | 10.48.208.1 – 10.48.223.254 | 10.48.223.255 |
| 15 | 10.48.224.0/20 | 10.48.224.1 – 10.48.239.254 | 10.48.239.255 |
| 16 | 10.48.240.0/20 | 10.48.240.1 – 10.48.255.254 | 10.48.255.255 |
| 17 | 10.49.0.0/20 | 10.49.0.1 – 10.49.15.254 | 10.49.15.255 |
| 18 | 10.49.16.0/20 | 10.49.16.1 – 10.49.31.254 | 10.49.31.255 |
| 19 | 10.49.32.0/20 | 10.49.32.1 – 10.49.47.254 | 10.49.47.255 |
| 20 | 10.49.48.0/20 | 10.49.48.1 – 10.49.63.254 | 10.49.63.255 |
| 21 | 10.49.64.0/20 | 10.49.64.1 – 10.49.79.254 | 10.49.79.255 |
| 22 | 10.49.80.0/20 | 10.49.80.1 – 10.49.95.254 | 10.49.95.255 |
| 23 | 10.49.96.0/20 | 10.49.96.1 – 10.49.111.254 | 10.49.111.255 |
| 24 | 10.49.112.0/20 | 10.49.112.1 – 10.49.127.254 | 10.49.127.255 |
| 25 | 10.49.128.0/20 | 10.49.128.1 – 10.49.143.254 | 10.49.143.255 |
| 26 | 10.49.144.0/20 | 10.49.144.1 – 10.49.159.254 | 10.49.159.255 |
| 27 | 10.49.160.0/20 | 10.49.160.1 – 10.49.175.254 | 10.49.175.255 |
| 28 | 10.49.176.0/20 | 10.49.176.1 – 10.49.191.254 | 10.49.191.255 |
| 29 | 10.49.192.0/20 | 10.49.192.1 – 10.49.207.254 | 10.49.207.255 |
| 30 | 10.49.208.0/20 | 10.49.208.1 – 10.49.223.254 | 10.49.223.255 |
| 31 | 10.49.224.0/20 | 10.49.224.1 – 10.49.239.254 | 10.49.239.255 |
| 32 | 10.49.240.0/20 | 10.49.240.1 – 10.49.255.254 | 10.49.255.255 |
| 33 | 10.50.0.0/20 | 10.50.0.1 – 10.50.15.254 | 10.50.15.255 |
| 34 | 10.50.16.0/20 | 10.50.16.1 – 10.50.31.254 | 10.50.31.255 |
| 35 | 10.50.32.0/20 | 10.50.32.1 – 10.50.47.254 | 10.50.47.255 |
| 36 | 10.50.48.0/20 | 10.50.48.1 – 10.50.63.254 | 10.50.63.255 |
| 37 | 10.50.64.0/20 | 10.50.64.1 – 10.50.79.254 | 10.50.79.255 |
| 38 | 10.50.80.0/20 | 10.50.80.1 – 10.50.95.254 | 10.50.95.255 |
| 39 | 10.50.96.0/20 | 10.50.96.1 – 10.50.111.254 | 10.50.111.255 |
| 40 | 10.50.112.0/20 | 10.50.112.1 – 10.50.127.254 | 10.50.127.255 |
| 41 | 10.50.128.0/20 | 10.50.128.1 – 10.50.143.254 | 10.50.143.255 |
| 42 | 10.50.144.0/20 | 10.50.144.1 – 10.50.159.254 | 10.50.159.255 |
| 43 | 10.50.160.0/20 | 10.50.160.1 – 10.50.175.254 | 10.50.175.255 |
| 44 | 10.50.176.0/20 | 10.50.176.1 – 10.50.191.254 | 10.50.191.255 |
| 45 | 10.50.192.0/20 | 10.50.192.1 – 10.50.207.254 | 10.50.207.255 |
| 46 | 10.50.208.0/20 | 10.50.208.1 – 10.50.223.254 | 10.50.223.255 |
| 47 | 10.50.224.0/20 | 10.50.224.1 – 10.50.239.254 | 10.50.239.255 |
| 48 | 10.50.240.0/20 | 10.50.240.1 – 10.50.255.254 | 10.50.255.255 |
| 49 | 10.51.0.0/20 | 10.51.0.1 – 10.51.15.254 | 10.51.15.255 |
| 50 | 10.51.16.0/20 | 10.51.16.1 – 10.51.31.254 | 10.51.31.255 |
| 51 | 10.51.32.0/20 | 10.51.32.1 – 10.51.47.254 | 10.51.47.255 |
| 52 | 10.51.48.0/20 | 10.51.48.1 – 10.51.63.254 | 10.51.63.255 |
| 53 | 10.51.64.0/20 | 10.51.64.1 – 10.51.79.254 | 10.51.79.255 |
| 54 | 10.51.80.0/20 | 10.51.80.1 – 10.51.95.254 | 10.51.95.255 |
| 55 | 10.51.96.0/20 | 10.51.96.1 – 10.51.111.254 | 10.51.111.255 |
| 56 | 10.51.112.0/20 | 10.51.112.1 – 10.51.127.254 | 10.51.127.255 |
| 57 | 10.51.128.0/20 | 10.51.128.1 – 10.51.143.254 | 10.51.143.255 |
| 58 | 10.51.144.0/20 | 10.51.144.1 – 10.51.159.254 | 10.51.159.255 |
| 59 | 10.51.160.0/20 | 10.51.160.1 – 10.51.175.254 | 10.51.175.255 |
| 60 | 10.51.176.0/20 | 10.51.176.1 – 10.51.191.254 | 10.51.191.255 |
| 61 | 10.51.192.0/20 | 10.51.192.1 – 10.51.207.254 | 10.51.207.255 |
| 62 | 10.51.208.0/20 | 10.51.208.1 – 10.51.223.254 | 10.51.223.255 |
| 63 | 10.51.224.0/20 | 10.51.224.1 – 10.51.239.254 | 10.51.239.255 |
| 64 | 10.51.240.0/20 | 10.51.240.1 – 10.51.255.254 | 10.51.255.255 |
| 65 | 10.52.0.0/20 | 10.52.0.1 – 10.52.15.254 | 10.52.15.255 |
| 66 | 10.52.16.0/20 | 10.52.16.1 – 10.52.31.254 | 10.52.31.255 |
| 67 | 10.52.32.0/20 | 10.52.32.1 – 10.52.47.254 | 10.52.47.255 |
| 68 | 10.52.48.0/20 | 10.52.48.1 – 10.52.63.254 | 10.52.63.255 |
| 69 | 10.52.64.0/20 | 10.52.64.1 – 10.52.79.254 | 10.52.79.255 |
| 70 | 10.52.80.0/20 | 10.52.80.1 – 10.52.95.254 | 10.52.95.255 |
| 71 | 10.52.96.0/20 | 10.52.96.1 – 10.52.111.254 | 10.52.111.255 |
| 72 | 10.52.112.0/20 | 10.52.112.1 – 10.52.127.254 | 10.52.127.255 |
| 73 | 10.52.128.0/20 | 10.52.128.1 – 10.52.143.254 | 10.52.143.255 |
| 74 | 10.52.144.0/20 | 10.52.144.1 – 10.52.159.254 | 10.52.159.255 |
| 75 | 10.52.160.0/20 | 10.52.160.1 – 10.52.175.254 | 10.52.175.255 |
| 76 | 10.52.176.0/20 | 10.52.176.1 – 10.52.191.254 | 10.52.191.255 |
| 77 | 10.52.192.0/20 | 10.52.192.1 – 10.52.207.254 | 10.52.207.255 |
| 78 | 10.52.208.0/20 | 10.52.208.1 – 10.52.223.254 | 10.52.223.255 |
| 79 | 10.52.224.0/20 | 10.52.224.1 – 10.52.239.254 | 10.52.239.255 |
| 80 | 10.52.240.0/20 | 10.52.240.1 – 10.52.255.254 | 10.52.255.255 |
| 81 | 10.53.0.0/20 | 10.53.0.1 – 10.53.15.254 | 10.53.15.255 |
| 82 | 10.53.16.0/20 | 10.53.16.1 – 10.53.31.254 | 10.53.31.255 |
| 83 | 10.53.32.0/20 | 10.53.32.1 – 10.53.47.254 | 10.53.47.255 |
| 84 | 10.53.48.0/20 | 10.53.48.1 – 10.53.63.254 | 10.53.63.255 |
| 85 | 10.53.64.0/20 | 10.53.64.1 – 10.53.79.254 | 10.53.79.255 |
| 86 | 10.53.80.0/20 | 10.53.80.1 – 10.53.95.254 | 10.53.95.255 |
| 87 | 10.53.96.0/20 | 10.53.96.1 – 10.53.111.254 | 10.53.111.255 |
| 88 | 10.53.112.0/20 | 10.53.112.1 – 10.53.127.254 | 10.53.127.255 |
| 89 | 10.53.128.0/20 | 10.53.128.1 – 10.53.143.254 | 10.53.143.255 |
| 90 | 10.53.144.0/20 | 10.53.144.1 – 10.53.159.254 | 10.53.159.255 |
| 91 | 10.53.160.0/20 | 10.53.160.1 – 10.53.175.254 | 10.53.175.255 |
| 92 | 10.53.176.0/20 | 10.53.176.1 – 10.53.191.254 | 10.53.191.255 |
| 93 | 10.53.192.0/20 | 10.53.192.1 – 10.53.207.254 | 10.53.207.255 |
| 94 | 10.53.208.0/20 | 10.53.208.1 – 10.53.223.254 | 10.53.223.255 |
| 95 | 10.53.224.0/20 | 10.53.224.1 – 10.53.239.254 | 10.53.239.255 |
| 96 | 10.53.240.0/20 | 10.53.240.1 – 10.53.255.254 | 10.53.255.255 |
| 97 | 10.54.0.0/20 | 10.54.0.1 – 10.54.15.254 | 10.54.15.255 |
| 98 | 10.54.16.0/20 | 10.54.16.1 – 10.54.31.254 | 10.54.31.255 |
| 99 | 10.54.32.0/20 | 10.54.32.1 – 10.54.47.254 | 10.54.47.255 |
| 100 | 10.54.48.0/20 | 10.54.48.1 – 10.54.63.254 | 10.54.63.255 |
| 101 | 10.54.64.0/20 | 10.54.64.1 – 10.54.79.254 | 10.54.79.255 |
| 102 | 10.54.80.0/20 | 10.54.80.1 – 10.54.95.254 | 10.54.95.255 |
| 103 | 10.54.96.0/20 | 10.54.96.1 – 10.54.111.254 | 10.54.111.255 |
| 104 | 10.54.112.0/20 | 10.54.112.1 – 10.54.127.254 | 10.54.127.255 |
| 105 | 10.54.128.0/20 | 10.54.128.1 – 10.54.143.254 | 10.54.143.255 |
| 106 | 10.54.144.0/20 | 10.54.144.1 – 10.54.159.254 | 10.54.159.255 |
| 107 | 10.54.160.0/20 | 10.54.160.1 – 10.54.175.254 | 10.54.175.255 |
| 108 | 10.54.176.0/20 | 10.54.176.1 – 10.54.191.254 | 10.54.191.255 |
| 109 | 10.54.192.0/20 | 10.54.192.1 – 10.54.207.254 | 10.54.207.255 |
| 110 | 10.54.208.0/20 | 10.54.208.1 – 10.54.223.254 | 10.54.223.255 |
| 111 | 10.54.224.0/20 | 10.54.224.1 – 10.54.239.254 | 10.54.239.255 |
| 112 | 10.54.240.0/20 | 10.54.240.1 – 10.54.255.254 | 10.54.255.255 |
| 113 | 10.55.0.0/20 | 10.55.0.1 – 10.55.15.254 | 10.55.15.255 |
| 114 | 10.55.16.0/20 | 10.55.16.1 – 10.55.31.254 | 10.55.31.255 |
| 115 | 10.55.32.0/20 | 10.55.32.1 – 10.55.47.254 | 10.55.47.255 |
| 116 | 10.55.48.0/20 | 10.55.48.1 – 10.55.63.254 | 10.55.63.255 |
| 117 | 10.55.64.0/20 | 10.55.64.1 – 10.55.79.254 | 10.55.79.255 |
| 118 | 10.55.80.0/20 | 10.55.80.1 – 10.55.95.254 | 10.55.95.255 |
| 119 | 10.55.96.0/20 | 10.55.96.1 – 10.55.111.254 | 10.55.111.255 |
| 120 | 10.55.112.0/20 | 10.55.112.1 – 10.55.127.254 | 10.55.127.255 |
| 121 | 10.55.128.0/20 | 10.55.128.1 – 10.55.143.254 | 10.55.143.255 |
| 122 | 10.55.144.0/20 | 10.55.144.1 – 10.55.159.254 | 10.55.159.255 |
| 123 | 10.55.160.0/20 | 10.55.160.1 – 10.55.175.254 | 10.55.175.255 |
| 124 | 10.55.176.0/20 | 10.55.176.1 – 10.55.191.254 | 10.55.191.255 |
| 125 | 10.55.192.0/20 | 10.55.192.1 – 10.55.207.254 | 10.55.207.255 |
| 126 | 10.55.208.0/20 | 10.55.208.1 – 10.55.223.254 | 10.55.223.255 |
| 127 | 10.55.224.0/20 | 10.55.224.1 – 10.55.239.254 | 10.55.239.255 |
| 128 | 10.55.240.0/20 | 10.55.240.1 – 10.55.255.254 | 10.55.255.255 |
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.