Subnet Calculator
Quick Reference ▾
| CIDR | Mask | Hosts | Use Case |
|---|---|---|---|
| /30 | 255.255.255.252 | 2 | Point-to-point |
| /29 | 255.255.255.248 | 6 | Small DMZ |
| /28 | 255.255.255.240 | 14 | Small office |
| /27 | 255.255.255.224 | 30 | Department |
| /26 | 255.255.255.192 | 62 | Medium VLAN |
| /25 | 255.255.255.128 | 126 | Large VLAN |
| /24 | 255.255.255.0 | 254 | Standard subnet |
| /23 | 255.255.254.0 | 510 | Large network |
| /22 | 255.255.252.0 | 1022 | Campus |
| /20 | 255.255.240.0 | 4094 | Large campus |
| /16 | 255.255.0.0 | 65534 | Class B |