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40i Nettools — IP & Browser Info

Public IP, browser diagnostics and local IP geolocation.

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Project preview: 40i Nettools — IP & Browser Info

What it does

Check your public IPv4 or IPv6 address, inspect browser details locally, and look up approximate IP location and network organization. Includes a networking wiki and practical guides. The Chrome extension is available separately; version 2.0 is in preparation.

Getting started

Open the website for connection and browser checks. Use the GeoIP lookup within the displayed guest limits, or browse the wiki and articles.

Technology

Static HTML, CSS and JavaScript share a lightweight Go API with the Chrome extension. GeoIP reads local MaxMind MMDB files; the extension 2.0 build adds caching and interval refresh with chrome.alarms. Web/backend deploy after successful GitHub CI.

Project website

  • HTML
  • CSS
  • JavaScript
  • Python static generation

Project

  • Go
  • MaxMind GeoLite2 MMDB
  • Apache
  • systemd

Application

  • Chrome extension
  • Manifest V3
  • chrome.alarms

Source: project website: nettools.40i.net