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)172.16.14.0/27
network172.16.14.0/27
broadcast172.16.14.31
first host172.16.14.1
last host172.16.14.30
subnet mask255.255.255.224
wildcard0.0.0.31
addresses32
usable hosts30
classB
ipcalc 172.16.14.0/27
address10101100.00010000.00001110.00000000
subnet mask11111111.11111111.11111111.11100000
network10101100.00010000.00001110.00000000
broadcast10101100.00010000.00001110.00011111
green = network part, grey = host part
hex0xac100e00
decimal2886733312
reverse dns0.14.16.172.in-addr.arpa
ipv4-mapped::ffff:ac10:e00
/27 split into /32 · 32 subnets
close ×| # | network | host range | broadcast |
|---|---|---|---|
| 1 | 172.16.14.0/32 | 172.16.14.0 – 172.16.14.0 | 172.16.14.0 |
| 2 | 172.16.14.1/32 | 172.16.14.1 – 172.16.14.1 | 172.16.14.1 |
| 3 | 172.16.14.2/32 | 172.16.14.2 – 172.16.14.2 | 172.16.14.2 |
| 4 | 172.16.14.3/32 | 172.16.14.3 – 172.16.14.3 | 172.16.14.3 |
| 5 | 172.16.14.4/32 | 172.16.14.4 – 172.16.14.4 | 172.16.14.4 |
| 6 | 172.16.14.5/32 | 172.16.14.5 – 172.16.14.5 | 172.16.14.5 |
| 7 | 172.16.14.6/32 | 172.16.14.6 – 172.16.14.6 | 172.16.14.6 |
| 8 | 172.16.14.7/32 | 172.16.14.7 – 172.16.14.7 | 172.16.14.7 |
| 9 | 172.16.14.8/32 | 172.16.14.8 – 172.16.14.8 | 172.16.14.8 |
| 10 | 172.16.14.9/32 | 172.16.14.9 – 172.16.14.9 | 172.16.14.9 |
| 11 | 172.16.14.10/32 | 172.16.14.10 – 172.16.14.10 | 172.16.14.10 |
| 12 | 172.16.14.11/32 | 172.16.14.11 – 172.16.14.11 | 172.16.14.11 |
| 13 | 172.16.14.12/32 | 172.16.14.12 – 172.16.14.12 | 172.16.14.12 |
| 14 | 172.16.14.13/32 | 172.16.14.13 – 172.16.14.13 | 172.16.14.13 |
| 15 | 172.16.14.14/32 | 172.16.14.14 – 172.16.14.14 | 172.16.14.14 |
| 16 | 172.16.14.15/32 | 172.16.14.15 – 172.16.14.15 | 172.16.14.15 |
| 17 | 172.16.14.16/32 | 172.16.14.16 – 172.16.14.16 | 172.16.14.16 |
| 18 | 172.16.14.17/32 | 172.16.14.17 – 172.16.14.17 | 172.16.14.17 |
| 19 | 172.16.14.18/32 | 172.16.14.18 – 172.16.14.18 | 172.16.14.18 |
| 20 | 172.16.14.19/32 | 172.16.14.19 – 172.16.14.19 | 172.16.14.19 |
| 21 | 172.16.14.20/32 | 172.16.14.20 – 172.16.14.20 | 172.16.14.20 |
| 22 | 172.16.14.21/32 | 172.16.14.21 – 172.16.14.21 | 172.16.14.21 |
| 23 | 172.16.14.22/32 | 172.16.14.22 – 172.16.14.22 | 172.16.14.22 |
| 24 | 172.16.14.23/32 | 172.16.14.23 – 172.16.14.23 | 172.16.14.23 |
| 25 | 172.16.14.24/32 | 172.16.14.24 – 172.16.14.24 | 172.16.14.24 |
| 26 | 172.16.14.25/32 | 172.16.14.25 – 172.16.14.25 | 172.16.14.25 |
| 27 | 172.16.14.26/32 | 172.16.14.26 – 172.16.14.26 | 172.16.14.26 |
| 28 | 172.16.14.27/32 | 172.16.14.27 – 172.16.14.27 | 172.16.14.27 |
| 29 | 172.16.14.28/32 | 172.16.14.28 – 172.16.14.28 | 172.16.14.28 |
| 30 | 172.16.14.29/32 | 172.16.14.29 – 172.16.14.29 | 172.16.14.29 |
| 31 | 172.16.14.30/32 | 172.16.14.30 – 172.16.14.30 | 172.16.14.30 |
| 32 | 172.16.14.31/32 | 172.16.14.31 – 172.16.14.31 | 172.16.14.31 |
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 /27 |
|---|---|---|---|---|
| /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 | - |
| /21 | 255.255.248.0 | 2,048 | 2,046 | - |
| /22 | 255.255.252.0 | 1,024 | 1,022 | - |
| /23 | 255.255.254.0 | 512 | 510 | - |
| /24 | 255.255.255.0 | 256 | 254 | - |
| /25 | 255.255.255.128 | 128 | 126 | - |
| /26 | 255.255.255.192 | 64 | 62 | - |
| /27 | 255.255.255.224 | 32 | 30 | 1 |
| /28 | 255.255.255.240 | 16 | 14 | 2 split → |
| /29 | 255.255.255.248 | 8 | 6 | 4 split → |
| /30 | 255.255.255.252 | 4 | 2 | 8 split → |
| /31 | 255.255.255.254 | 2 | 2 | 16 split → |
| /32 | 255.255.255.255 | 1 | 1 | 32 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.