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Classes, Ranges, and Uses.
| Class | Range | Use | Public/Private | Potential Addresses |
|---|---|---|---|---|
| A | 1.0.0.0 to 126.0.0.0 | Large networks, unicast | Public | 16,777,216 |
| B | 128.0.0.0 to 191.255.0.0 | Medium networks, unicast | Public | 65,536 |
| C | 192.0.0.0 to 223.255.255.0 | Small networks, unicast (small businesses) | Public | 256 |
| D | 224.0.0.0 to 239.255.255.255 | Multicast | Public | N/A |
| E | 240.0.0.0 to 255.255.255.255 | Reserved for future use | Reserved | N/A |