Blocky DNS Ad-Blocker 2026: Lightweight Pi-hole Alternative

Most DNS ad-blockers fall into two camps: the heavyweight (Pi-hole with its web dashboard, PHP backend, and dependency on FTL) and the bare-bones (a single hosts file slapped into dnsmasq). Blocky sits in that sweet spot between them — a Go binary, a single config file, and DNS blocking that supports DoH, DoT, DoQ, and DoH3 out of the box.

Bottom line up front: If you already run a Pi-hole and wish it were faster and lighter, or if you want DNS-level ad blocking without a full LAMP stack on your network, Blocky is worth a solid look. Our team found its setup time, resource footprint, and protocol support genuinely impressive for a 6.7k-star GitHub project that’s still flying under the mainstream radar.

What Makes Blocky Different

Unlike Pi-hole, which acts as a full DNS server with a built-in blocklist manager and web UI, Blocky positions itself as a DNS proxy with filtering capabilities. So that distinction matters:

Now that table tells the story. Blocky brings modern encrypted DNS protocols that Pi-hole simply doesn’t support natively. If you want your DNS queries encrypted from end to end, Blocky handles it in one config block — no extra proxy containers needed. DNS-level protection like this complements VPN usage too — our privacy leaks guide covers why encrypted DNS matters even behind a VPN tunnel.

Hands-On: Blocky Setup and First Impressions

We spun up Blocky on a $6 DigitalOcean Droplet (1 vCPU, 1 GB RAM) running Ubuntu 24.04 (affiliate link). So here’s how it went:

Install took under 60 seconds. So download the binary from GitHub releases, make it executable, and write a config file. So that’s it. Also no apt repositories, no dependency resolution, no PHP-FPM configuration drama.

So here’s the minimal config we used to get started:

upstream:
  default:
    - 1.1.1.1
    - 8.8.8.8
blocking:
  blackLists:
    ads:
      - https://raw.githubusercontent.com/StevenBlack/hosts/master/hosts
  clientGroupsBlock:
    default:
      - ads
caching:
  minTime: 5m
  maxTime: 30m
  prefetching: true
queryLog:
  type: postgresql
  target: postgres://user:***@localhost:5432/blocky

After saving the config, we ran ./blocky --config config.yml and it was serving DNS queries on port 53. Still, no systemd unit dance, no permission errors — it Just Worked.

Now the optional web dashboard (available on port 4000 by default) shows query volume, block rate, and upstream response times. It’s not as polished as Pi-hole’s dashboard, but it’s functional and loads instantly — no PHP page generation lag. For another example of a lightweight self-hosted tool that punches above its weight, check our Netbird mesh VPN review.

Blocky Testing Results: Cache, Latency & Block Rate

Running Blocky on a test network with 12 devices for a week, we observed:

• Cache hit ratio: ~78% on the default 5-minute TTL, thanks to the prefetching feature. Blocky refreshes popular cache entries before they expire, so your first-hit latency stays low.
• Query latency added by Blocky itself: under 0.5ms in our measurements. The binary’s Go runtime handles concurrent UDP and TCP queries efficiently.
• Block rate: roughly 12-15% of all queries were blocked using the StevenBlack hosts list. So that’s consistent with what we see on Pi-hole.
• Resource usage never exceeded 45 MB RAM and 0.3% CPU on a 1 vCPU box, even during peak browsing hours.

But it’s not all roses. Still, the web dashboard logs only persist if you configure a PostgreSQL backend — there’s no built-in SQLite option. So for query analytics beyond the last few minutes, you need to set up a Postgres instance, which raises the complexity bar for the non-technical Pi-hole refugee.

Who Should Use Blocky

Go for it if: you already self-host DNS and want encrypted protocols without extra containers. Pi-hole feels heavy for your setup. Or you run a small home lab or VPS and want Prometheus metrics out of the box.

Skip it if: you rely on Pi-hole’s polished dashboard for family reporting. Or if you want a plug-and-play appliance — Blocky needs a config file and optionally a database. No Raspberry Pi disk image here.

The Verdict on Blocky DNS (2026)

Blocky does one thing — DNS-level ad and tracker blocking with modern encryption — and does it well. Yet setup is trivial, resources are minimal, and you get protocols Pi-hole can’t match without extra tooling.

Still, it’s not a Pi-hole killer. The dashboard gap is real, and the PostgreSQL requirement for log persistence adds friction. So as a lean DNS proxy for privacy-conscious self-hosters, Blocky earns its spot in your toolkit. You’ll be up and running before your next Pi-hole update finishes.