IPv4 Range Expander
Expand IP range pools and CIDR blocks into a complete list of individual IP addresses.
IP Range Definition
IP List (0 shown)
Frequently Asked Questions
Is my data sent to a server when using the IPv4 Range Expander?
No. The IPv4 Range Expander is a fully client-side utility. All data processing, calculations, and conversions are handled locally in your browser. No input text, payloads, or keys are uploaded to any external server.
What is CIDR block notation?
CIDR (Classless Inter-Domain Routing) notation specifies an IP address followed by a slash and prefix bit-count (e.g. `/24`), defining the size of the network routing prefix.
Can I safely calculate subnets for private networks?
Yes. Since calculations happen locally in JavaScript, you can safely parse private IP allocations (like `10.0.0.0/8` or `192.168.1.0/24`) without exposing internal architecture.
What is the difference between IPv4 and IPv6 subnetting?
IPv4 uses 32-bit addresses mapped into 4 octets, whereas IPv6 uses 128-bit hexadecimal notation, offering a vastly larger subnet workspace with prefix guidelines like `/64`.
Does the IPv4 Range Expander store history or cache my inputs?
No. The application runs entirely in browser memory. Once you refresh the tab, navigate away, or close the window, all inputted details, logs, and outputs are completely cleared.
Is the IPv4 Range Expander compatible with mobile devices?
Yes. The interface is optimized to be fully responsive. You can perform calculations, conversions, and formats on all modern mobile, tablet, and desktop web browsers.
Does the IPv4 Range Expander work offline?
Yes. Once loaded, all code and assets required to run the IPv4 Range Expander reside in your browser cache, enabling offline use without an active network connection.