IPv4 DHCP Pool Planner
Plan a DHCP scope for an IPv4 subnet: gateway, usable range, and a pool that skips the gateway and reserved static addresses.
This tool handles input and primary processing in your browser and is designed not to send the input to QuickKit’s server.
DHCP plan
| Network | — |
|---|---|
| Subnet mask | — |
| Broadcast | — |
| Gateway | — |
| Usable range | — |
| Low-end reservation | — |
| High-end reservation | — |
| Pool start | — |
| Pool end | — |
| Pool size | — |
| Total usable | — |
How it works
Enter the subnet in CIDR notation. The gateway is placed at the first or last usable address (or omitted). The usable range minus the gateway is the candidate pool; the low-end reservation removes that many addresses from its low end and the high-end reservation from its high end (for static assignments), and what remains is the pool. This is a generic plan, not a vendor config — feed the values into your DHCP server. Prefix lengths /30 and shorter are supported; /31 and /32 are outside this planner's DHCP pool model. The default low-end reservation of 10 assumes an address space of about a /24 or larger (prefix length /24 or shorter); on a small subnet the plan reports how many addresses can actually be reserved.