IPv4 & IPv6 Address Checker

A lightweight utility hosted on Cloudflare Pages that returns the user’s public IP address as plain text. Perfect for CLI usage with curl or quick browser checks.

Usage

CLI

  • Get your default protocol IP (usually IPv4): 
    curl https://checkip.ipcow.com/

    Example output: 1.0.0.1

  • Force IPv4: 
      curl -4 https://checkip.ipcow.com/

    Example output: 1.0.0.1

  • Force IPv6: 
      curl -6 https://checkip.ipcow.com/

    Example output: 2606:4700:4700::1001

Browser

  • Visit https://checkip.ipcow.com/
  • Displays your connecting IP (IPv4 or IPv6, depending on your browser’s protocol preference) as plain text.

How It Works

  • Built with Cloudflare Pages and a single Function (functions/\[\[path]].js).
  • Uses the CF-Connecting-IP header to detect the client’s public IP.
  • Returns plain text for simplicity and expanded use cases.

Notes

This service returns only the IP used for the connection (IPv4 or IPv6), not both simultaneously. For a dual-IP display, check out https://ipcow.com/. No external dependencies—just pure Cloudflare magic. Use at your will, no guarantees implied.

License

MIT License - feel free to use, modify, and share!