IP Spaces, Yo
| Address Space | RFC | Intended Usage | Good Choice? |
|---|---|---|---|
| 10.0.0.0/8 | RFC1918 | Private networks | ⚠️ (yours full) |
| 172.16.0.0/12 | RFC1918 | Private networks | ⚠️ (work uses it) |
| 192.168.0.0/16 | RFC1918 | Private networks | ⚠️ (offices use it) |
| 100.64.0.0/10 | RFC6598 | Carrier-grade NAT (ISP space) | ❌ (your WAN uses it) |
| 169.254.0.0/16 | RFC3927 | Link-local (auto config, no routing) | ❌ (breaks routing/tunnels) |
| 198.18.0.0/15 | RFC2544 | Benchmark/testing networks | ✅ Best for tunnels |
| 192.0.2.0/24 | RFC5737 | Documentation/examples | ⚠️ (small, but usable) |
| 198.51.100.0/24 | RFC5737 | Documentation/examples | ⚠️ (small, but usable) |
| 203.0.113.0/24 | RFC5737 | Documentation/examples | ⚠️ (small, but usable) |
| 127.0.0.0/8 | RFC1122 | Loopback | ❌ |
| 224.0.0.0/4 | RFC5771 | Multicast | ❌ |
| 240.0.0.0/4 | RFC1112 | Reserved (future use) | ❌ (mostly unusable) |