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IPv4 subnet split planner
Split a parent network into equal subnets with usable ranges and paged CSV output.
01Enter your values
Runs in your browser02IPv4 subnet split planner
Runs in your browser
How it works
Split a parent network into equal subnets with usable ranges and paged CSV output.
Subnet count = 2 ^ (New subnet prefix − CIDR); Addresses per subnet = 2 ^ (32 − New subnet prefix) − 2; /31 → 2, /32 → 1
Runs in your browser
Discovery source
Your data stays yours
Inputs are processed on this page and are never sent to a server.
About this tool
Use tool ↑Split a parent network into equal subnets with usable ranges and paged CSV output.
For network administrators: normalize the parent CIDR and split into equal prefixes. /31 uses point-to-point addressing; /32 represents one host. Browse every subnet by page; CSV contains the current page. No VLSM or network scanning.
How to use it
- Enter your values
Parent network (IPv4/CIDR) · New subnet prefix · Page · Subnets per page
- Calculate / generate
Split a parent network into equal subnets with usable ranges and paged CSV output.
- Result
4 · Subnet count
Calculation method
Subnet count = 2 ^ (New subnet prefix − CIDR); Addresses per subnet = 2 ^ (32 − New subnet prefix) − 2; /31 → 2, /32 → 1
IPv4 subnet split planner
- Parent network (IPv4/CIDR)
- 192.168.10.0/24
- New subnet prefix
- 26
- Page
- 1
- Subnets per page
- 64
Result
4 · Subnet count
Frequently asked questions
How should I interpret the result?
For network administrators: normalize the parent CIDR and split into equal prefixes. /31 uses point-to-point addressing; /32 represents one host. Browse every subnet by page; CSV contains the current page. No VLSM or network scanning.
Where does my data go?
Calculations run on your device. Form inputs are not sent to a server.