IPv4 Subnet List Generator – Split CIDR into Subnets

ToolsFaction Online Tool

IPv4 Subnet List Generator

Split a parent CIDR block into equal-size IPv4 subnets.

Split an IPv4 CIDR network into smaller equal-size subnets and list their network addresses.

About This Tool

ToolsFaction IPv4 Subnet List Generator calculates equal-size child networks from a parent CIDR block, with an output cap for browser readability.

How to Use

  1. Enter the parent IPv4 CIDR.
  2. Choose a longer new prefix.
  3. Generate the subnet list.
  4. Review subnet count and addresses per subnet.

Example

Split 192.168.0.0/24 into four /26 subnets.

Frequently Asked Questions

Can the new prefix be shorter?

No. Splitting requires the same or a longer prefix.

Does it enumerate host addresses?

No. It lists child subnet network addresses.

Why is output capped?

Very large lists are limited to keep the browser interface practical.

Does it support IPv6?

No.

Free to UseNo hidden fees
No Sign-UpStart instantly
Browser-BasedNothing to install
Privacy FriendlyBuilt for simple use
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