Lookup, calculate, and convert IP addresses and networks
| Range | CIDR | Subnet Mask | Addresses | Description |
|---|---|---|---|---|
| 10.0.0.0 - 10.255.255.255 | 10.0.0.0/8 | 255.0.0.0 | 16,777,216 | Class A private |
| 172.16.0.0 - 172.31.255.255 | 172.16.0.0/12 | 255.240.0.0 | 1,048,576 | Class B private |
| 192.168.0.0 - 192.168.255.255 | 192.168.0.0/16 | 255.255.0.0 | 65,536 | Class C private |
| 127.0.0.0 - 127.255.255.255 | 127.0.0.0/8 | 255.0.0.0 | 16,777,216 | Loopback (localhost) |
| 169.254.0.0 - 169.254.255.255 | 169.254.0.0/16 | 255.255.0.0 | 65,536 | Link-local (APIPA) |
| 0.0.0.0 | - | - | 1 | Default route / unspecified |
| 255.255.255.255 | - | - | 1 | Broadcast |
| ::1 | ::1/128 | - | 1 | IPv6 loopback |
| fe80::/10 | fe80::/10 | - | ~1.2x10^18 | IPv6 link-local |
| fc00::/7 | fc00::/7 | - | ~5.9x10^28 | IPv6 unique local (ULA) |