More related to IP [Important]
- Subnet & Masks (Host: Device IP Allocation ratio)
- IPv4 Headers (Details inside IPv4)
Public IP Addresses
| Type | Range | Use |
|---|---|---|
| Public IP | All addresses except reserved ranges | For devices that need to be globally accessible over the internet |
Private IP Addresses
| Class | Range | Default Subnet Mask | Usage |
|---|---|---|---|
| Class A | ==10==.0.0.0 – ==10==.255.255.255 | 255.0.0.0 | Large enterprise networks, cloud infrastructure (VMs) |
| Class B | ==172.16==.0.0 –==172.31==.255.255 . | 255.240.0.0 | Medium-sized corporate LANs, gateways |
| Class C | ==192.168==.0.0 – ==192.168==.255.255 | 255.255.255.0 | Small office/home networks (local IP) |
Special and Reserved IP Addresses
| Type | Range | Usage |
|---|---|---|
| Multicast (Class D) | ==224.==0.0.0 – ==239==.255.255.255 . | Used for multicasting (e.g., streaming, conferencing) |
| Experimental (Class E) | ==240==.0.0.0 – ==255==.255.255.254 | Reserved for experimental use |
| Loopback | ==127==.0.0.0 – ==127==.255.255.255 | Used for testing (localhost) |