/16 Subnet Mask Reference (255.255.0.0)
Class B networks, major cloud VPC primary blocks (e.g., AWS/GCP 10.0.0.0/16), and university campuses.
| CIDR Prefix | /16 |
|---|---|
| Subnet Mask | 255.255.0.0 |
| Wildcard Mask (Cisco / ACL) | 0.0.255.255 |
| Total IPv4 Addresses | 65,536 |
| Usable Host IPs | 65,534 |
| Binary Subnet Mask | 11111111.11111111.00000000.00000000 |
| Example Block (10.0.0.0/16) | 10.0.0.0 – 10.0.255.255 |
| Example Usable Hosts | 10.0.0.1 – 10.0.255.254 |
Need to compute custom IP ranges? Try the Interactive Subnet Calculator or VLSM Splitter.