/30 Subnet Mask Reference (255.255.255.252)
Traditional point-to-point WAN router links (2 usable hosts).
| CIDR Prefix | /30 |
|---|---|
| Subnet Mask | 255.255.255.252 |
| Wildcard Mask (Cisco / ACL) | 0.0.0.3 |
| Total IPv4 Addresses | 4 |
| Usable Host IPs | 2 |
| Binary Subnet Mask | 11111111.11111111.11111111.11111100 |
| Example Block (10.0.0.0/30) | 10.0.0.0 – 10.0.0.3 |
| Example Usable Hosts | 10.0.0.1 – 10.0.0.2 |
Need to compute custom IP ranges? Try the Interactive Subnet Calculator or VLSM Splitter.