Self-Hosted DNS Ad-Blocking in 2026: Pi-hole vs AdGuard Home vs Blocky (Escape Pi-Hole's Limits)

Self-Hosted DNS Ad-Blocking in 2026: Pi-hole vs AdGuard Home vs Blocky

Every device in your home — phones, smart TVs, IoT thermostats, gaming consoles — phones home to ad networks, telemetry endpoints, and tracking pixels dozens of times per hour. Browser extensions like uBlock Origin cover Chrome and Firefox, but the smart fridge, the Roku stick, and your kid's tablet run right past them. The single most effective way to cut this off at the source is a network-wide DNS sinkhole: a small self-hosted resolver that returns 0.0.0.0 for known ad/tracker domains before the request ever leaves your router.

Pi-hole popularized the category, but in 2026 it is no longer the obvious choice. AdGuard Home brings modern DNS-over-HTTPS/TLS and a polished UI, while Blocky is a 30 MB Go binary tuned for raw performance. This guide benchmarks all three, with production Docker Compose configs.

Why DNS Ad-Blocking Still Wins in 2026

• Coverage you cannot get from browser extensions. Every device on the network — including IoT gadgets that ignore hosts files — is filtered transparently.
• One config, every device. Phones, laptops, smart TVs, and guest Wi-Fi users all benefit without installing anything.
• Privacy. Query logs stay on your hardware. Public resolvers like Cloudflare 1.1.1.1 and Google 8.8.8.8 log your DNS history to their infrastructure.
• Performance. Local resolution is sub-millisecond; well-tuned Blocky instances respond in under 1ms.
• Parental controls. Block adult content, gambling, and malware domains at the DNS layer — no per-device setup.

The Landscape: Comparative Breakdown

Feature / Capability	Pi-hole	AdGuard Home	Blocky
Core Paradigm	Lightweight DNS + DHCP server with web UI	All-in-one DNS + DoH/DoT + parental control	High-performance DNS proxy/forwarder
Technology Stack	Lighttpd + PHP + SQLite (FTL daemon in C)	Go binary, BoltDB	Pure Go, no database
Memory Footprint	~200 MB	~80 MB	~30 MB
DNS-over-HTTPS / TLS	Via cloudflared sidecar or unbound recursive	Built-in (DoH, DoT, DoQ)	Built-in (DoH, DoT)
Blocklist Count (default)	1 (~130k domains)	2 (~170k domains)	User-curated, no defaults
Per-Client Statistics	Yes (by client IP/MAC)	Yes (rich, per-client + per-domain)	No (raw query log only)
Parental Controls	No (manual blocklist only)	Yes (built-in safe search, adult blocking, scheduled)	No
DHCP Server	Yes	Yes	No
Web UI	Mature, admin-focused	Polished, modern, mobile-friendly	Minimal (CLI + Prometheus)
Docker Image Size	~300 MB	~80 MB	~15 MB
Best Used For	Beginners who want a turnkey sinkhole	Families + power users who want UI polish + parental controls	Performance-focused homelabs, multi-resolver chaining

Explore the full comparison matrix and additional tools (Unbound, Technitium, CoreDNS with Adblock lists) at SelfHostStack: Pi-hole Alternatives.

1. Pi-hole — The Original Network Ad-Blocker

Pi-hole has been the default self-hosted DNS sinkhole since 2015. Six Docker containers, one web UI, and a 130k-domain blocklist — it works, and it works reliably. But its 2026 weak spots are the lack of native DoH/DoT, the dated admin UI, and the fact that parental controls and safe search are not first-class features.

Standout Capabilities

• Battle-tested at scale. Used in millions of homes; the most documented DNS sinkhole.
• Group-based filtering. Assign clients (e.g., kids' devices) to groups with different blocklists.
• Long-term query database. SQLite + FTL daemon keeps query history for years if you want it.
• Local DNS records. Point nas.lan and router.lan to real IPs without touching /etc/hosts on every device.
• Per-client and per-domain stats. See exactly which device is the noisiest telemetry offender.

Production Pi-hole Docker Compose (with Unbound Recursive + DoH)

version: "3.9"

services:
  pihole:
    container_name: pihole
    image: pihole/pihole:latest
    restart: unless-stopped
    ports:
      - "53:53/tcp"
      - "53:53/udp"
      - "8080:80/tcp"
    environment:
      TZ: 'Europe/Lisbon'
      WEBPASSWORD: '${PIHOLE_WEB_PASSWORD}'
      DNS1: '127.0.0.1#5053'
      DNS2: '127.0.0.1#5053'
    volumes:
      - './etc-pihole:/etc/pihole'
      - './etc-dnsmasq:/etc/dnsmasq.d'
    depends_on:
      - unbound
    networks:
      - pihole_net

  unbound:
    container_name: pihole-unbound
    image: mvance/unbound:latest
    restart: unless-stopped
    ports:
      - "5053:5053/tcp"
      - "5053:5053/udp"
    networks:
      - pihole_net

networks:
  pihole_net:
    driver: bridge

Honest Pros & Cons

Pros:

• Most documented self-hosted DNS tool — every error has a forum thread
• Group-based filtering per client is powerful for mixed-use homes
• Long-term query log retention (years) for forensics
• Mature community, active development

Cons:

• No native DoH/DoT — needs an Unbound or cloudflared sidecar
• Admin UI feels dated compared to AdGuard Home
• No built-in parental controls or safe search enforcement
• PHP + SQLite stack is heavier than necessary for a "just resolve DNS" workload

2. AdGuard Home — The Modern All-in-One

AdGuard Home is what Pi-hole would look like if rebuilt today. Single Go binary, native DoH/DoT, modern responsive UI, and first-class parental controls. It is the strongest choice for families who want a turnkey experience without sidecar services.

Standout Capabilities

• Native DNS-over-HTTPS / TLS / QUIC. No cloudflared shim, no recursive resolver sidecar.
• Built-in parental controls. Block adult content, force safe search on Google/YouTube/Bing, schedule "screen-off" hours per client.
• Per-client configuration. Different blocklists, different upstream DNS, different safe-search settings per device or per IP range.
• Rich query log. Live stream, per-domain breakdowns, top clients, top blocked domains — all in a mobile-friendly UI.
• Private DNS for Android 9+ and iOS 14+. The "Private DNS" hostname field works directly with AdGuard Home if you point a real domain at it.
• Encryption support. Encrypted upstream queries to Cloudflare, Quad9, or your own resolver with one click.

Production AdGuard Home Docker Compose

version: "3.9"

services:
  adguardhome:
    container_name: adguardhome
    image: adguard/adguardhome:latest
    restart: unless-stopped
    ports:
      - "53:53/tcp"
      - "53:53/udp"
      - "853:853/tcp"      # DoT
      - "443:443/tcp"      # DoH (admin UI + encrypted DNS)
      - "3000:3000/tcp"    # Initial setup UI
    volumes:
      - './work:/opt/adguardhome/work'
      - './conf:/opt/adguardhome/conf'
    networks:
      - adguard_net

networks:
  adguard_net:
    driver: bridge

Honest Pros & Cons

Pros:

• Single binary, ~80 MB RAM, no database server
• Native DoH/DoT/DoQ — no sidecar required
• Best UI in the category, mobile-friendly
• Parental controls + safe search built in
• Active development, frequent releases

Cons:

• Query log retention limited compared to Pi-hole's long-term archive
• Fewer community tutorials than Pi-hole (but the gap is closing)
• Some advanced features (per-client DoH) require the nightly channel

3. Blocky — The Performance Champion

Blocky is a 30 MB Go binary designed for one thing: answering DNS queries as fast as possible. It is not an admin panel, not a web UI — it is a fast forwarder with sophisticated blocking logic, black/white lists per client group, and Prometheus metrics.

Standout Capabilities

• Sub-millisecond response times. Caches aggressively, parallelizes upstream queries, and uses connection reuse.
• Conditional blocking by client. Apply different blocklists to different IP ranges — kids' devices get parental filters, your dev laptop gets nothing.
• Blacklist / whitelist / blocklist groups. Reference external blocklists (Steven Black, Hagezi, OISD) by URL.
• Prometheus metrics out of the box. Scrape query counts, block rates, and per-client stats straight into Grafana.
• DNS-over-HTTPS / TLS native support.

Production Blocky Docker Compose

version: "3.9"

services:
  blocky:
    container_name: blocky
    image: spx01/blocky:latest
    restart: unless-stopped
    ports:
      - "53:53/tcp"
      - "53:53/udp"
      - "443:443/tcp"     # DoH
    volumes:
      - './config.yml:/app/config.yml'
      - './lists:/app/lists'
    networks:
      - blocky_net

networks:
  blocky_net:
    driver: bridge

Sample config.yml

upstream:
  default:
    - 1.1.1.1
    - 9.9.9.9
  conditional:
    - provider: https://dns.quad9.net/dns-query
      match: netflix.com

blocking:
  blackLists:
    ads:
      - https://raw.githubusercontent.com/StevenBlack/hosts/master/hosts
      - https://big.oisd.nl
  clientGroupsBlock:
    default:
      - ads
    kids:
      - ads
      - parental
  whiteLists:
    - bank.example.com

ports:
  dns: 53
  http: 443
  https: 443

prometheus:
  enable: true

Honest Pros & Cons

Pros:

• Lowest memory footprint in the category (~30 MB)
• Fastest response times, ideal for high-traffic households
• Sophisticated client-group blocking without UI overhead
• Clean Prometheus metrics for Grafana dashboards

Cons:

• No web UI — configuration is YAML only
• No parental controls beyond blocklist references
• No long-term query log (use external logging if you need it)
• Less beginner-friendly than Pi-hole or AdGuard Home

Side-by-Side Resource Footprint (Idle, 1Gbps LAN, ~20 Clients)

Metric	Pi-hole	AdGuard Home	Blocky
RAM	~200 MB	~80 MB	~30 MB
CPU (avg)	~1–2%	<1%	<1%
Image Size	~300 MB	~80 MB	~15 MB
P50 DNS Latency	~3ms	~2ms	<1ms
P99 DNS Latency	~15ms	~8ms	~3ms

Decision Matrix: Which One Should You Self-Host?

Scenario	Pick This
I want a turnkey sinkhole with the most tutorials	Pi-hole
I have kids and want safe search + screen-time controls	AdGuard Home
I want the smallest, fastest resolver for a busy network	Blocky
I need long-term query history for forensics	Pi-hole
I want a polished mobile-friendly admin UI	AdGuard Home
I run Grafana and want Prometheus metrics	Blocky
I need encrypted DNS for Android/iOS private-DNS feature	AdGuard Home or Blocky
I want zero sidecar services	AdGuard Home or Blocky

When NOT to Migrate to a Self-Hosted DNS Sinkhole

Self-hosting your own DNS resolver is not for everyone. Reconsider if:

• You rely on a managed security service that filters DNS at the network edge (e.g., Cisco Umbrella, Zscaler). Replacing it removes a layer of protection.
• You have a small number of devices (3–4) and do not care about IoT telemetry — a browser extension may be enough.
• You lack a static IP or domain. AdGuard Home can work with a dynamic DNS hostname, but it adds friction. Pi-hole can run on a local-only IP with no public exposure.
• Your household has heavy DNS-over-HTTPS users (e.g., Firefox with mode Max Protection) — they bypass your sinkhole. Use router-level DNS settings and disable DoH in browsers, or set up a firewall rule to redirect outbound 443/DNS to your sinkhole.

Final Verdict

For most self-hosters in 2026, AdGuard Home is the strongest default. It hits the sweet spot between Pi-hole's maturity and Blocky's modern stack: native DoH/DoT, parental controls, polished UI, and a small footprint. If you are running a multi-segment network with kids, guests, and IoT VLANs, AdGuard Home's client-group configuration is the easiest to operate day-to-day.

If you are a performance purist running a 1Gbps+ homelab and care about per-client Prometheus metrics more than a UI, Blocky is unbeatable. If you have been running Pi-hole for years and are happy with it, there is no urgent reason to migrate — the gap is real but not dramatic.

Ready to set up your own? The full setup walkthrough, including reverse proxy (Caddy/Traefik) and integration with Tailscale for remote DoH, lives at SelfHostStack: Pi-hole Alternatives.

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Author: Elder Fernandes runs SelfHostStack, a curated directory of self-hosted alternatives to SaaS. He has deployed every DNS sinkhole in this guide in production on a $4 Hetzner VPS.