CIDR ↔ Wildcard Converter
IP Address
CIDR Prefix
⚠ Please enter a valid IPv4 address.
Conversion Result
CIDR Notation
—
Wildcard Mask
—
Subnet Mask
—
Network Address
—
Broadcast
—
Usable Hosts
—
| IP Address | — |
| Network / CIDR | — |
| Subnet Mask | — |
| Wildcard Mask | — |
| Broadcast | — |
| First Usable Host | — |
| Last Usable Host | — |
| Usable Hosts | — |
Binary Comparison — Subnet vs Wildcard
Subnet Mask (1 = network bits)
Wildcard Mask (1 = host bits)
Cisco ACL Syntax Generator
Common Wildcard Reference
| Wildcard | CIDR | Subnet Mask | Hosts | Common Use |
|---|