| To seperate device from other devices Limit the amount of available ip addresses on the network. Network segmentation Provide ip addresses to devices |
| Class | Range |
| A | 0.0.0.0-127.255.255.255 |
| B | 128.0.0.0-191.255.255.255 |
| C | 192.0.0.0-223.255.255.255 |
| D | 224.0.0.0-239.255.255.255 |
| E | 240.0.0.0-255.255.255.255 |
127 is not shown because it's the assigned loopback address. |
| 10.0.0.0-10.255.255.255 |
| 172.16.0.0-172.31.255.255 |
| 192.168.0.0-192.168.255.255 |
| Local Host | APIPA |
| 127.0.0.0-127.255.255.255 | 169.254.0.0-169.254.255.255 |
| 0.0.0.8 | This network |
| 10.0.0/8 | Private IPv4 Address Block |
| 100.64.0.0/10 | Carrier-grade NAT |
| 127.0.0/8 | Loopback |
| 127.0.53.53 | Name Collision occurence |
| 169.254.0.0/16 | Link Local |
| 172.16.0.0/12 | Private IPv4 Address Block |
| 192.0.0/24 | IETF protocol assignments |
| 198.18.0.0/15 | Network benchmark testing |
| 198.51.100.0/24 | TEST-NET-2 |
| 203.0.113.0/24 | TEST-NET-3 |
| 224.0.0.0/4 | Multicast |
| 240.0.0.0/4 | Reserved |
| 255.255.255.255/32 | Limited broadcast |
| CIDR | Subnet Mask | Addresses | Wildcard |
|---|---|---|---|
| /32 | 255.255.255.255 | 1 | 0.0.0.0 |
| /31 | 255.255.255.254 | 2 | 0.0.0.1 |
| /30 | 255.255.255.252 | 4 | 0.0.0.3 |
| /29 | 255.255.255.248 | 8 | 0.0.0.7 |
| /28 | 255.255.255.240 | 16 | 0.0.0.15 |
| /27 | 255.255.255.224 | 32 | 0.0.0.31 |
| /26 | 255.255.255.192 | 64 | 0.0.0.63 |
| /25 | 255.255.255.128 | 128 | 0.0.0.127 |
| /24 | 255.255.255.0 | 256 | 0.0.0.255 |
| /23 | 255.255.254.0 | 512 | 0.0.1.255 |
| /22 | 255.255.252.0 | 1,024 | 0.0.3.255 |
| /21 | 255.255.248.0 | 2,048 | 0.0.7.255 |
| /20 | 255.255.240.0 | 4,096 | 0.0.15.255 |
| /19 | 255.255.254.0 | 8,192 | 0.0.31.255 |
| /18 | 255.255.192.0 | 16,384 | 0.0.63.255 |
| /17 | 255.255.128.0 | 32,768 | 0.0.127.255 |
| /16 | 255.255.0.0 | 65,536 | 0.0.255.255 |
| /15 | 255.254.0.0 | 131,072 | 0.1.255.255 |
| /14 | 255.252.0.0 | 262,144 | 0.3.255.255 |
| /13 | 255.248.0.0 | 524,288 | 0.7.255.255 |
| /12 | 255.240.0.0 | 1,048,576 | 0.15.255.255 |
| /11 | 255.224.0.0 | 2,097,152 | 0.31.255.255 |
| /10 | 255.192.0.0 | 4,194,304 | 0.63.255.255 |
| /09 | 255.128.0.0 | 8,388,608 | 0.127.255.255 |
| /08 | 255.0.0.0 | 16,777,216 | 0.255.255.255 |
| /07 | 254.0.0.0 | 33,554,432 | 1.255.255.255 |
| /06 | 252.0.0.0 | 67,108,864 | 3.255.255.255 |
| /05 | 248.0.0.0 | 134,217,728 | 7.255.255.255 |
| /04 | 240.0.0.0 | 268,435,456 | 15.255.255.255 |
| /03 | 224.0.0.0 | 536,870,912 | 31.255.255.255 |
| /02 | 192.0.0.0 | 1,073,741,824 | 63.255.255.255 |
| /01 | 128.0.0.0 | 2,147,483,648 | 127.255.255.255 |
| /00 | 0.0.0.0 | 4,294,967,296 | 255.255.255.255 |
| Bytes | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| Power2 | 128 | 64 | 32 | 16 | 8 | 4 | 2 | 1 |
| Binary Turned On | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 1 |
| Represented bit value. | 0 | 0 | 0 | 0 | 8 | 0 | 2 | 1 |
| 8 + 2 = 10 10 + 2 = 12 12 + 1 = 13 | 13 |
| 0 | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| Power2 | 128 | 64 | 32 | 16 | 8 | 4 | 2 | 1 |
| Binary Turned On | 0 | 0 | 1 | 1 | 1 | 0 | 1 | 1 |
| Represented bit value. | 0 | 0 | 32 | 16 | 8 | 0 | 2 | 1 |
| 32 + 16 = 48 48 + 8 = 56 56 + 2 = 58 58 + 1 = 59 | 59 |