I built a zero-nonsense, free tool to show exactly what your network and browser leak to the world (umbrella.ad)
Hey everyone,
I got tired of visiting bloated, ad-smothered user-agent sites just to check my connection footprint, so I decided to build a clean, minimal alternative for developers:umbrella.ad
It's a completely free public utility written in Go (using chi and miekg/dns) backed by Redis and a DB-IP dataset. Everything runs locally on a single VPS box—your IP never leaves the server for third-party lookups, and raw logs are aggressively pruned after 30 days.
What it does:
- Instantly isolates and checks your split-tunnel networking footprint via forced
ipv4andipv6sub-resource routing. - Runs a real DNS leak test using a self-hosted authoritative nameserver to sniff out exactly which recursive resolvers your browser is phoning home to.
- Displays server-parsed hardware and header telemetry, alongside a quick-toggle raw JSON viewer if you just want to pipe the payload into your terminal workflows.
It’s completely free, requires no user signups, and has no tracker nonsense.
⚠️ A quick security warning on donations & funds: We fund and maintain this platform strictly via standard display ads (Google AdSense), meaning it is 100% free out-of-pocket for the community. No one from our team will ever ask you for donations, funds, or personal information. Please do not trust any emails, discord messages, WhatsApp, or Telegram groups claiming to represent us or seeking financial support. If it asks for money, it is a scam.
Check it out and let us know what you think, or if you spot any routing edge cases!