OSI Model | Packets | Glossaries | IPv4 Address Classes | Subnetting | Powershell
128 64 32 16 8 4 2 1
| Class | Left-most bit | Starting IP address | Last IP address |
|---|---|---|---|
| A | 0xxx | 0.0.0.0 | 127.255.255.255 |
| B | 10xx | 128.0.0.0 | 191.255.255.255 |
| C | 110x | 192.0.0.0 | 223.255.255.255 |
| D | 1110 | 224.0.0.0 | 239.255.255.255 |
| E | 1111 | 240.0.0.0 | 255.255.255.255 |