https://github.com/netsampler/ip

https://github.com/netsampler/ip

Last synced: 13 days ago
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• Host: GitHub
• URL: https://github.com/netsampler/ip
• Owner: netsampler
• Created: 2026-06-02T20:28:20.000Z (20 days ago)
• Default Branch: main
• Last Pushed: 2026-06-02T22:05:58.000Z (20 days ago)
• Last Synced: 2026-06-02T23:11:22.666Z (20 days ago)
• Language: JavaScript
• Size: 109 KB
• Stars: 0
• Watchers: 0
• Forks: 0
• Open Issues: 1
• Metadata Files:
  • Readme: README.md

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README

          
# Web IP Calculator

A dependency-free single-page IP calculator for IPv4 and IPv6 prefixes.

Live site: [https://netsampler.github.io/ip/](https://netsampler.github.io/ip/)

## Screenshot

![Web IP Calculator showing fd01:bee::beef/64](assets/screenshot-fd01-bee-beef-64.jpg)

## Run

```sh

npm run dev

```

Then open [http://localhost:4173](http://localhost:4173).

Set a different port with any of these:

```sh

npm run dev -- --port 3000

npm run dev -- -p 3000

npm run dev -- 3000

PORT=3000 npm run dev

```

The app also works by opening `index.html` directly in a browser.

## Controls

- Type an IPv4 or IPv6 address/prefix to calculate the normalized range.

- Use the Current representation control to view addresses as regular notation, hex, binary, or an integer.

- IPv4 defaults to regular dotted notation; IPv6 defaults to expanded hex.

- The current prefix is saved in the URL as `?prefix=...` so bookmarks and shared links reopen the same calculation.

- Use `ArrowUp` / `ArrowDown` to move by `-2ⁿ` / `+2ⁿ` to adjacent prefixes.

- Use the prefix navigation buttons beside the field for the same moves without a keyboard.

- Use `PageUp` / `PageDown` to jump by ten prefixes.

- Use mouse back/forward side buttons to move through committed prefix history.

- Press `Tab` to accept the inline completion.