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)10.13.160.0/20
network10.13.160.0/20
broadcast10.13.175.255
first host10.13.160.1
last host10.13.175.254
subnet mask255.255.240.0
wildcard0.0.15.255
addresses4,096
usable hosts4,094
classA
ipcalc 10.13.160.0/20
address00001010.00001101.10100000.00000000
subnet mask11111111.11111111.11110000.00000000
network00001010.00001101.10100000.00000000
broadcast00001010.00001101.10101111.11111111
green = network part, grey = host part
hex0x0a0da000
decimal168665088
reverse dns0.160.13.10.in-addr.arpa
ipv4-mapped::ffff:a0d:a000
/20 split into /27 · 128 subnets
close ×| # | network | host range | broadcast |
|---|---|---|---|
| 1 | 10.13.160.0/27 | 10.13.160.1 – 10.13.160.30 | 10.13.160.31 |
| 2 | 10.13.160.32/27 | 10.13.160.33 – 10.13.160.62 | 10.13.160.63 |
| 3 | 10.13.160.64/27 | 10.13.160.65 – 10.13.160.94 | 10.13.160.95 |
| 4 | 10.13.160.96/27 | 10.13.160.97 – 10.13.160.126 | 10.13.160.127 |
| 5 | 10.13.160.128/27 | 10.13.160.129 – 10.13.160.158 | 10.13.160.159 |
| 6 | 10.13.160.160/27 | 10.13.160.161 – 10.13.160.190 | 10.13.160.191 |
| 7 | 10.13.160.192/27 | 10.13.160.193 – 10.13.160.222 | 10.13.160.223 |
| 8 | 10.13.160.224/27 | 10.13.160.225 – 10.13.160.254 | 10.13.160.255 |
| 9 | 10.13.161.0/27 | 10.13.161.1 – 10.13.161.30 | 10.13.161.31 |
| 10 | 10.13.161.32/27 | 10.13.161.33 – 10.13.161.62 | 10.13.161.63 |
| 11 | 10.13.161.64/27 | 10.13.161.65 – 10.13.161.94 | 10.13.161.95 |
| 12 | 10.13.161.96/27 | 10.13.161.97 – 10.13.161.126 | 10.13.161.127 |
| 13 | 10.13.161.128/27 | 10.13.161.129 – 10.13.161.158 | 10.13.161.159 |
| 14 | 10.13.161.160/27 | 10.13.161.161 – 10.13.161.190 | 10.13.161.191 |
| 15 | 10.13.161.192/27 | 10.13.161.193 – 10.13.161.222 | 10.13.161.223 |
| 16 | 10.13.161.224/27 | 10.13.161.225 – 10.13.161.254 | 10.13.161.255 |
| 17 | 10.13.162.0/27 | 10.13.162.1 – 10.13.162.30 | 10.13.162.31 |
| 18 | 10.13.162.32/27 | 10.13.162.33 – 10.13.162.62 | 10.13.162.63 |
| 19 | 10.13.162.64/27 | 10.13.162.65 – 10.13.162.94 | 10.13.162.95 |
| 20 | 10.13.162.96/27 | 10.13.162.97 – 10.13.162.126 | 10.13.162.127 |
| 21 | 10.13.162.128/27 | 10.13.162.129 – 10.13.162.158 | 10.13.162.159 |
| 22 | 10.13.162.160/27 | 10.13.162.161 – 10.13.162.190 | 10.13.162.191 |
| 23 | 10.13.162.192/27 | 10.13.162.193 – 10.13.162.222 | 10.13.162.223 |
| 24 | 10.13.162.224/27 | 10.13.162.225 – 10.13.162.254 | 10.13.162.255 |
| 25 | 10.13.163.0/27 | 10.13.163.1 – 10.13.163.30 | 10.13.163.31 |
| 26 | 10.13.163.32/27 | 10.13.163.33 – 10.13.163.62 | 10.13.163.63 |
| 27 | 10.13.163.64/27 | 10.13.163.65 – 10.13.163.94 | 10.13.163.95 |
| 28 | 10.13.163.96/27 | 10.13.163.97 – 10.13.163.126 | 10.13.163.127 |
| 29 | 10.13.163.128/27 | 10.13.163.129 – 10.13.163.158 | 10.13.163.159 |
| 30 | 10.13.163.160/27 | 10.13.163.161 – 10.13.163.190 | 10.13.163.191 |
| 31 | 10.13.163.192/27 | 10.13.163.193 – 10.13.163.222 | 10.13.163.223 |
| 32 | 10.13.163.224/27 | 10.13.163.225 – 10.13.163.254 | 10.13.163.255 |
| 33 | 10.13.164.0/27 | 10.13.164.1 – 10.13.164.30 | 10.13.164.31 |
| 34 | 10.13.164.32/27 | 10.13.164.33 – 10.13.164.62 | 10.13.164.63 |
| 35 | 10.13.164.64/27 | 10.13.164.65 – 10.13.164.94 | 10.13.164.95 |
| 36 | 10.13.164.96/27 | 10.13.164.97 – 10.13.164.126 | 10.13.164.127 |
| 37 | 10.13.164.128/27 | 10.13.164.129 – 10.13.164.158 | 10.13.164.159 |
| 38 | 10.13.164.160/27 | 10.13.164.161 – 10.13.164.190 | 10.13.164.191 |
| 39 | 10.13.164.192/27 | 10.13.164.193 – 10.13.164.222 | 10.13.164.223 |
| 40 | 10.13.164.224/27 | 10.13.164.225 – 10.13.164.254 | 10.13.164.255 |
| 41 | 10.13.165.0/27 | 10.13.165.1 – 10.13.165.30 | 10.13.165.31 |
| 42 | 10.13.165.32/27 | 10.13.165.33 – 10.13.165.62 | 10.13.165.63 |
| 43 | 10.13.165.64/27 | 10.13.165.65 – 10.13.165.94 | 10.13.165.95 |
| 44 | 10.13.165.96/27 | 10.13.165.97 – 10.13.165.126 | 10.13.165.127 |
| 45 | 10.13.165.128/27 | 10.13.165.129 – 10.13.165.158 | 10.13.165.159 |
| 46 | 10.13.165.160/27 | 10.13.165.161 – 10.13.165.190 | 10.13.165.191 |
| 47 | 10.13.165.192/27 | 10.13.165.193 – 10.13.165.222 | 10.13.165.223 |
| 48 | 10.13.165.224/27 | 10.13.165.225 – 10.13.165.254 | 10.13.165.255 |
| 49 | 10.13.166.0/27 | 10.13.166.1 – 10.13.166.30 | 10.13.166.31 |
| 50 | 10.13.166.32/27 | 10.13.166.33 – 10.13.166.62 | 10.13.166.63 |
| 51 | 10.13.166.64/27 | 10.13.166.65 – 10.13.166.94 | 10.13.166.95 |
| 52 | 10.13.166.96/27 | 10.13.166.97 – 10.13.166.126 | 10.13.166.127 |
| 53 | 10.13.166.128/27 | 10.13.166.129 – 10.13.166.158 | 10.13.166.159 |
| 54 | 10.13.166.160/27 | 10.13.166.161 – 10.13.166.190 | 10.13.166.191 |
| 55 | 10.13.166.192/27 | 10.13.166.193 – 10.13.166.222 | 10.13.166.223 |
| 56 | 10.13.166.224/27 | 10.13.166.225 – 10.13.166.254 | 10.13.166.255 |
| 57 | 10.13.167.0/27 | 10.13.167.1 – 10.13.167.30 | 10.13.167.31 |
| 58 | 10.13.167.32/27 | 10.13.167.33 – 10.13.167.62 | 10.13.167.63 |
| 59 | 10.13.167.64/27 | 10.13.167.65 – 10.13.167.94 | 10.13.167.95 |
| 60 | 10.13.167.96/27 | 10.13.167.97 – 10.13.167.126 | 10.13.167.127 |
| 61 | 10.13.167.128/27 | 10.13.167.129 – 10.13.167.158 | 10.13.167.159 |
| 62 | 10.13.167.160/27 | 10.13.167.161 – 10.13.167.190 | 10.13.167.191 |
| 63 | 10.13.167.192/27 | 10.13.167.193 – 10.13.167.222 | 10.13.167.223 |
| 64 | 10.13.167.224/27 | 10.13.167.225 – 10.13.167.254 | 10.13.167.255 |
| 65 | 10.13.168.0/27 | 10.13.168.1 – 10.13.168.30 | 10.13.168.31 |
| 66 | 10.13.168.32/27 | 10.13.168.33 – 10.13.168.62 | 10.13.168.63 |
| 67 | 10.13.168.64/27 | 10.13.168.65 – 10.13.168.94 | 10.13.168.95 |
| 68 | 10.13.168.96/27 | 10.13.168.97 – 10.13.168.126 | 10.13.168.127 |
| 69 | 10.13.168.128/27 | 10.13.168.129 – 10.13.168.158 | 10.13.168.159 |
| 70 | 10.13.168.160/27 | 10.13.168.161 – 10.13.168.190 | 10.13.168.191 |
| 71 | 10.13.168.192/27 | 10.13.168.193 – 10.13.168.222 | 10.13.168.223 |
| 72 | 10.13.168.224/27 | 10.13.168.225 – 10.13.168.254 | 10.13.168.255 |
| 73 | 10.13.169.0/27 | 10.13.169.1 – 10.13.169.30 | 10.13.169.31 |
| 74 | 10.13.169.32/27 | 10.13.169.33 – 10.13.169.62 | 10.13.169.63 |
| 75 | 10.13.169.64/27 | 10.13.169.65 – 10.13.169.94 | 10.13.169.95 |
| 76 | 10.13.169.96/27 | 10.13.169.97 – 10.13.169.126 | 10.13.169.127 |
| 77 | 10.13.169.128/27 | 10.13.169.129 – 10.13.169.158 | 10.13.169.159 |
| 78 | 10.13.169.160/27 | 10.13.169.161 – 10.13.169.190 | 10.13.169.191 |
| 79 | 10.13.169.192/27 | 10.13.169.193 – 10.13.169.222 | 10.13.169.223 |
| 80 | 10.13.169.224/27 | 10.13.169.225 – 10.13.169.254 | 10.13.169.255 |
| 81 | 10.13.170.0/27 | 10.13.170.1 – 10.13.170.30 | 10.13.170.31 |
| 82 | 10.13.170.32/27 | 10.13.170.33 – 10.13.170.62 | 10.13.170.63 |
| 83 | 10.13.170.64/27 | 10.13.170.65 – 10.13.170.94 | 10.13.170.95 |
| 84 | 10.13.170.96/27 | 10.13.170.97 – 10.13.170.126 | 10.13.170.127 |
| 85 | 10.13.170.128/27 | 10.13.170.129 – 10.13.170.158 | 10.13.170.159 |
| 86 | 10.13.170.160/27 | 10.13.170.161 – 10.13.170.190 | 10.13.170.191 |
| 87 | 10.13.170.192/27 | 10.13.170.193 – 10.13.170.222 | 10.13.170.223 |
| 88 | 10.13.170.224/27 | 10.13.170.225 – 10.13.170.254 | 10.13.170.255 |
| 89 | 10.13.171.0/27 | 10.13.171.1 – 10.13.171.30 | 10.13.171.31 |
| 90 | 10.13.171.32/27 | 10.13.171.33 – 10.13.171.62 | 10.13.171.63 |
| 91 | 10.13.171.64/27 | 10.13.171.65 – 10.13.171.94 | 10.13.171.95 |
| 92 | 10.13.171.96/27 | 10.13.171.97 – 10.13.171.126 | 10.13.171.127 |
| 93 | 10.13.171.128/27 | 10.13.171.129 – 10.13.171.158 | 10.13.171.159 |
| 94 | 10.13.171.160/27 | 10.13.171.161 – 10.13.171.190 | 10.13.171.191 |
| 95 | 10.13.171.192/27 | 10.13.171.193 – 10.13.171.222 | 10.13.171.223 |
| 96 | 10.13.171.224/27 | 10.13.171.225 – 10.13.171.254 | 10.13.171.255 |
| 97 | 10.13.172.0/27 | 10.13.172.1 – 10.13.172.30 | 10.13.172.31 |
| 98 | 10.13.172.32/27 | 10.13.172.33 – 10.13.172.62 | 10.13.172.63 |
| 99 | 10.13.172.64/27 | 10.13.172.65 – 10.13.172.94 | 10.13.172.95 |
| 100 | 10.13.172.96/27 | 10.13.172.97 – 10.13.172.126 | 10.13.172.127 |
| 101 | 10.13.172.128/27 | 10.13.172.129 – 10.13.172.158 | 10.13.172.159 |
| 102 | 10.13.172.160/27 | 10.13.172.161 – 10.13.172.190 | 10.13.172.191 |
| 103 | 10.13.172.192/27 | 10.13.172.193 – 10.13.172.222 | 10.13.172.223 |
| 104 | 10.13.172.224/27 | 10.13.172.225 – 10.13.172.254 | 10.13.172.255 |
| 105 | 10.13.173.0/27 | 10.13.173.1 – 10.13.173.30 | 10.13.173.31 |
| 106 | 10.13.173.32/27 | 10.13.173.33 – 10.13.173.62 | 10.13.173.63 |
| 107 | 10.13.173.64/27 | 10.13.173.65 – 10.13.173.94 | 10.13.173.95 |
| 108 | 10.13.173.96/27 | 10.13.173.97 – 10.13.173.126 | 10.13.173.127 |
| 109 | 10.13.173.128/27 | 10.13.173.129 – 10.13.173.158 | 10.13.173.159 |
| 110 | 10.13.173.160/27 | 10.13.173.161 – 10.13.173.190 | 10.13.173.191 |
| 111 | 10.13.173.192/27 | 10.13.173.193 – 10.13.173.222 | 10.13.173.223 |
| 112 | 10.13.173.224/27 | 10.13.173.225 – 10.13.173.254 | 10.13.173.255 |
| 113 | 10.13.174.0/27 | 10.13.174.1 – 10.13.174.30 | 10.13.174.31 |
| 114 | 10.13.174.32/27 | 10.13.174.33 – 10.13.174.62 | 10.13.174.63 |
| 115 | 10.13.174.64/27 | 10.13.174.65 – 10.13.174.94 | 10.13.174.95 |
| 116 | 10.13.174.96/27 | 10.13.174.97 – 10.13.174.126 | 10.13.174.127 |
| 117 | 10.13.174.128/27 | 10.13.174.129 – 10.13.174.158 | 10.13.174.159 |
| 118 | 10.13.174.160/27 | 10.13.174.161 – 10.13.174.190 | 10.13.174.191 |
| 119 | 10.13.174.192/27 | 10.13.174.193 – 10.13.174.222 | 10.13.174.223 |
| 120 | 10.13.174.224/27 | 10.13.174.225 – 10.13.174.254 | 10.13.174.255 |
| 121 | 10.13.175.0/27 | 10.13.175.1 – 10.13.175.30 | 10.13.175.31 |
| 122 | 10.13.175.32/27 | 10.13.175.33 – 10.13.175.62 | 10.13.175.63 |
| 123 | 10.13.175.64/27 | 10.13.175.65 – 10.13.175.94 | 10.13.175.95 |
| 124 | 10.13.175.96/27 | 10.13.175.97 – 10.13.175.126 | 10.13.175.127 |
| 125 | 10.13.175.128/27 | 10.13.175.129 – 10.13.175.158 | 10.13.175.159 |
| 126 | 10.13.175.160/27 | 10.13.175.161 – 10.13.175.190 | 10.13.175.191 |
| 127 | 10.13.175.192/27 | 10.13.175.193 – 10.13.175.222 | 10.13.175.223 |
| 128 | 10.13.175.224/27 | 10.13.175.225 – 10.13.175.254 | 10.13.175.255 |
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.