Wildcard ↔ Subnet Mask
Enter a prefix (/24 or 24), a subnet mask (255.255.255.0), or a wildcard mask (0.0.0.255) — the rest are derived live.
ACL Line Builder
Build a Cisco IOS access-list line from the fields below.
Access-list line
VLSM Planner
Allocate variable-length subnets from a base network. List one requirement per line as Name:hosts (or just hosts); largest blocks are placed first.
| Name | Needed | Network | Mask | Range | Broadcast | Usable |
|---|