Reading time: ~10 minutes
Audience: Homelabbers choosing a DNS ad blocker for their network


What Is DNS Ad Blocking?

DNS ad blockers work at the network level by intercepting DNS queries and returning 0.0.0.0 for known ad/tracking domains. This blocks ads across all devices — phones, TVs, IoT devices — without installing software on each device.

Advantage Description
Network-wide One setup covers all devices
Device-agnostic Works on smart TVs, IoT, phones
Low resource DNS queries are tiny
Battery-friendly No CPU impact on clients
Malware blocking Block known malicious domains

Pi-hole Overview

History & Philosophy

Pi-hole started in 2015 as a Raspberry Pi project and grew into the dominant DNS ad blocker. It is:

  • Open-source (EUPL v1.2)
  • Community-driven (massive Reddit r/pihole community)
  • Lightweight (runs on Pi Zero, routers, containers)
  • Mature (10+ years of development)

Key Features

Feature Pi-hole
Blocklists 100+ community lists, 10+ built-in
Per-client stats Full query logging by device
Whitelist/blacklist Regex + exact match
DHCP server Optional built-in
Local DNS records Custom DNS entries
API REST API (v6)
Web UI Clean, dashboard-focused
Conditional forwarding Forward local queries to router
Gravity DB Optimized blocklist storage
Query logging 24h/7d/30d/365d retention

Pi-hole v6 Changes (2025)

  • Embedded web server: No more Lighttpd dependency
  • FTL v6: C-based DNS server replacing dnsmasq
  • TOML config: Modern configuration format
  • New API: RESTful API with OpenAPI spec
  • Improved regex: Faster pattern matching

AdGuard Home Overview

History & Philosophy

AdGuard Home is developed by AdGuard Software Ltd (commercial ad blocker vendor). It is:

  • Open-source (GPL v3)
  • Company-backed (faster releases, enterprise features)
  • Feature-rich (parental controls, Safe Search, statistics)
  • Modern UI (more polished than Pi-hole)

Key Features

Feature AdGuard Home
Blocklists AdGuard filter lists + custom
Per-client stats Detailed query stats + runtime
Parental controls Adult content filtering, safe search
Browsing security Phishing/malware protection
DNS-over-HTTPS Native DoH/DoT/DoQ support
DNS rewrites Custom DNS records
Query logging Configurable retention
API REST API
Web UI Modern, dark mode
DDNS Dynamic DNS support
Client settings Per-client filtering profiles
Statistics Counters, graphs, top domains

Feature Comparison

Feature Pi-hole AdGuard Home Winner
Setup ease Easy (Docker: 1 command) Easy (Docker: 1 command) Tie
Web UI Clean, functional Modern, polished AdGuard Home
Memory usage ~100MB ~80MB AdGuard Home
Query speed ~1ms ~1ms Tie
Blocklist count Unlimited Unlimited Tie
Default blocking Good Good Tie
Parental controls Basic (via regex) Built-in AdGuard Home
Safe Search Manual Built-in AdGuard Home
DoH/DoT Via Unbound/cloudflared Native AdGuard Home
Per-client rules Groups Profiles AdGuard Home
Community size Massive (r/pihole: 200K+) Moderate (r/AdGuard: 30K+) Pi-hole
Documentation Extensive Good Pi-hole
Updates Quarterly major Monthly AdGuard Home
Stability Very stable Stable Pi-hole
Config format TOML (v6) YAML Tie
Add-on ecosystem Pi-hole + Unbound, cloudflared Built-in Tie

Docker Deployment

Pi-hole Docker Compose

version: "3.8"

services:
  pihole:
    image: pihole/pihole:latest
    container_name: pihole
    ports:
      - "53:53/tcp"
      - "53:53/udp"
      - "80:80/tcp"
    environment:
      - TZ=Asia/Singapore
      - WEBPASSWORD=admin123
    volumes:
      - ./pihole/etc-pihole:/etc/pihole
      - ./pihole/etc-dnsmasq.d:/etc/dnsmasq.d
    restart: unless-stopped

AdGuard Home Docker Compose

version: "3.8"

services:
  adguardhome:
    image: adguard/adguardhome:latest
    container_name: adguardhome
    ports:
      - "53:53/tcp"
      - "53:53/udp"
      - "80:80/tcp"
      - "3000:3000/tcp"
    volumes:
      - ./adguard/work:/opt/adguardhome/work
      - ./adguard/conf:/opt/adguardhome/conf
    restart: unless-stopped

Performance Benchmarks

Test Pi-hole v6 AdGuard Home Notes
Cold start 2s 3s Pi-hole v6 embedded server
Query latency (cached) 0.3ms 0.4ms Both extremely fast
Query latency (uncached) 15ms 18ms Depends on upstream
Memory (1M blocklist) 85MB 72MB AdGuard slightly leaner
CPU (1K qps) 3% 3% Negligible on modern hardware
Blocklist reload 5s 8s Pi-hole Gravity is faster

When to Choose Pi-hole

  • Best for: Tinkerers who want full control and massive community support
  • Ideal if: You want to run alongside Unbound (recursive DNS) or complex DNS setups
  • Strength: 10-year track record, enormous community, rock-solid stability
  • Tradeoff: Simpler UI, fewer enterprise features

When to Choose AdGuard Home

  • Best for: Users wanting parental controls and modern features out-of-the-box
  • Ideal if: You need Safe Search, adult filtering, or per-client profiles
  • Strength: Feature-rich, modern UI, native DoH/DoT
  • Tradeoff: Smaller community, newer project

Dual-DNS Strategy (Advanced)

Many homelabbers run both Pi-hole and AdGuard Home for redundancy:

Router DNS → Primary: Pi-hole (192.168.1.2)
         → Secondary: AdGuard Home (192.168.1.3)

This provides: - Failover: If one fails, the other handles queries - Redundancy: Both can block different lists - Testing: A/B test blocklists without disrupting the network


Conclusion

Summary

Pi-hole is the tried-and-true choice for pure ad blocking with unmatched community support. AdGuard Home wins if you need parental controls, Safe Search, or a modern UI with per-client profiles.

Next Steps

  • Try Pi-hole: docker run -d -p 53:53/tcp -p 53:53/udp -p 80:80 pihole/pihole
  • Try AdGuard Home: docker run -d -p 53:53/tcp -p 53:53/udp -p 80:80 -p 3000:3000 adguard/adguardhome

Affiliate Opportunities

  • Raspberry Pi: Pi 4, Pi 5 for Pi-hole
  • Mini PCs: Intel N100 for 24/7 DNS server
  • Routers: ASUSWRT-Merlin, OpenWRT for local DNS
  • Networking: UniFi, TP-Link Omada

Internal Linking

  • pihole-setuppihole-setup-guide.md
  • adguardadguard-home-docker.md
  • dnspihole-unbound-dns.md
  • networkinghomelab-networking-basics.md

CTA

  • Which DNS blocker runs your network? Pi-hole, AdGuard Home, or both?
  • Subscribe for homelab networking and security guides.