/12 Subnet Mask
255.240.0.0 · 1,048,576 addresses · 1,048,574 usable
Results
| Subnet Mask | 255.240.0.0 |
| HEX Code | FF.F0.00.00 |
| Total IPs | 1,048,576 |
| Usable Hosts | 1,048,574 |
| Wildcard Mask | 0.15.255.255 |
| Network Class | 16 B |
32-Bit Visualization
Network Host
Octet 1Octet 2Octet 3Octet 4
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12 network bits20 host bits
Full Reference
| CIDR | Subnet Mask | Total IPs | Usable | Class |
|---|---|---|---|---|
| /32 | 255.255.255.255 | 1 | 1 | Host |
| /31 | 255.255.255.254 | 2 | 2 | 1/1 C |
| /30 | 255.255.255.252 | 4 | 2 | 1/2 C |
| /29 | 255.255.255.248 | 8 | 6 | 1/4 C |
| /28 | 255.255.255.240 | 16 | 14 | 1/8 C |
| /27 | 255.255.255.224 | 32 | 30 | 1/16 C |
| /26 | 255.255.255.192 | 64 | 62 | 1/32 C |
| /25 | 255.255.255.128 | 128 | 126 | 1/64 C |
| /24 | 255.255.255.0 | 256 | 254 | 1 C |
| /23 | 255.255.254.0 | 512 | 510 | 2 C |
| /22 | 255.255.252.0 | 1,024 | 1,022 | 4 C |
| /21 | 255.255.248.0 | 2,048 | 2,046 | 8 C |
| /20 | 255.255.240.0 | 4,096 | 4,094 | 16 C |
| /19 | 255.255.224.0 | 8,192 | 8,190 | 32 C |
| /18 | 255.255.192.0 | 16,384 | 16,382 | 64 C |
| /17 | 255.255.128.0 | 32,768 | 32,766 | 128 C |
| /16 | 255.255.0.0 | 65,536 | 65,534 | 1 B |
| /15 | 255.254.0.0 | 131,072 | 131,070 | 2 B |
| /14 | 255.252.0.0 | 262,144 | 262,142 | 4 B |
| /13 | 255.248.0.0 | 524,288 | 524,286 | 8 B |
| /12 | 255.240.0.0 | 1,048,576 | 1,048,574 | 16 B |
| /11 | 255.224.0.0 | 2,097,152 | 2,097,150 | 32 B |
| /10 | 255.192.0.0 | 4,194,304 | 4,194,302 | 64 B |
| /9 | 255.128.0.0 | 8,388,608 | 8,388,606 | 128 B |
| /8 | 255.0.0.0 | 16,777,216 | 16,777,214 | 1 A |
| /7 | 254.0.0.0 | 33,554,432 | 33,554,430 | 2 A |
| /6 | 252.0.0.0 | 67,108,864 | 67,108,862 | 4 A |
| /5 | 248.0.0.0 | 134,217,728 | 134,217,726 | 8 A |
| /4 | 240.0.0.0 | 268,435,456 | 268,435,454 | 16 A |
| /3 | 224.0.0.0 | 536,870,912 | 536,870,910 | 32 A |
| /2 | 192.0.0.0 | 1,073,741,824 | 1,073,741,822 | 64 A |
| /1 | 128.0.0.0 | 2,147,483,648 | 2,147,483,646 | 128 A |
| /0 | 0.0.0.0 | 4,294,967,296 | 4,294,967,294 | Default |