IT
Ipv4 Addressing : Private Address Ranges
CEOinIRVINE
2009. 3. 14. 10:52
| Address Class | Address Range | Number of Networks | Number of Hosts |
|---|---|---|---|
| A | 1–126 | 126 | 16,777,214 |
| B | 128–191 | 16,384 | 65,534 |
| C | 192–223 | 2,097,152 | 254 |
| D | 224–239 | NA | NA |
| E | 240–255 | NA | NA |
A number of addresses have also been reserved for private use. These addresses are nonroutable and normally should not been seen on the Internet. Tables defines the private address ranges.
| Address | Class | Address Range | Default Subnet Mask |
|---|---|---|---|
| A | 10.0.0.0–10.255.255.255.255 | 255.0.0.0 | |
| B | 172.16.0.0–172.31.255.255 | 255.255.0.0 | |
| C | 192.168.0.0–192.168.255.255 | 255.255.255.0 |