Key Takeaways
- One device, every device protected. Pi-hole runs on one machine and blocks ads for everything connected to your Wi-Fi — phones, TVs, laptops, tablets, smart home devices — without installing anything on each device.
- DNS-level blocking catches what browser extensions miss. Ads in apps, streaming service tracking, smart TV surveillance, IoT telemetry — none of these can be blocked by a browser extension. Pi-hole catches them all.
- Blocks telemetry, not just ads. Pi-hole’s blocklists include tracking and telemetry endpoints — the servers that Windows, Android, Samsung, and smart home devices report your behaviour to. Blocking these reduces background data collection significantly.
- Runs on minimal hardware. A Raspberry Pi 4 ($55), an old laptop, a spare PC, or a Docker container on your NAS. Pi-hole uses less than 512MB RAM and virtually no CPU.
Why DNS-Level Blocking Is Different
Most people use uBlock Origin in their browser. It is excellent — for web browsing. But it only works in the browser, on one device, for web content.
Your phone’s apps do not go through your browser. Your smart TV’s ad platform does not go through your browser. Your Amazon Echo, your Nest thermostat, your Samsung fridge — none of these support browser extensions.
Pi-hole works at the DNS level, which is the layer that every device on your network uses. When your TV tries to load an ad from ads.doubleclick.net, it first asks your network’s DNS server what IP address that domain lives at. Pi-hole intercepts that request and returns nothing — the ad never loads, because the domain was never resolved.
This works for:
- Apps on phones and tablets (ad SDKs embedded in apps)
- Smart TVs (Samsung, LG, Roku — all have built-in ad platforms)
- Streaming devices (Fire TV, Apple TV, Chromecast)
- Game consoles (PlayStation, Xbox — both serve ads)
- Smart home devices (Ring, Nest, Philips Hue — all phone home)
- Windows and macOS telemetry (Microsoft and Apple data collection endpoints)
Direct Answer: What is Pi-hole and how does it work? Pi-hole is a network-wide DNS sinkhole — a programme that runs on your local network and blocks ads, trackers, and telemetry domains before they can load on any device. It works by acting as the DNS server for your home network. When any device tries to look up the IP address of an ad or tracking domain, Pi-hole intercepts the request and returns nothing, preventing the content from ever loading. It runs on a Raspberry Pi, any Linux machine, or as a Docker container. Every device on your Wi-Fi is protected automatically without installing anything on the individual devices.
What You Need
Hardware (choose one):
- Raspberry Pi 4 (2GB RAM minimum, 4GB recommended) — ~$55
- Any old PC or laptop running Ubuntu/Debian
- A NAS device (Synology, QNAP) that supports Docker
- A VPS (if you want protection outside home too)
- Docker on any existing Linux machine
Software: Raspbian/Raspberry Pi OS, Ubuntu, Debian, or any Debian-based Linux
Time: 20–30 minutes for full setup
Network access: Ability to log into your router admin panel to change DNS settings
Installation: One-Line Method
# SSH into your Raspberry Pi or Linux machine, then run:
curl -sSL https://install.pi-hole.net | bash
The installer will:
- Check your system and install dependencies
- Ask you to choose an upstream DNS provider (use Cloudflare 1.1.1.1 or Quad9 9.9.9.9)
- Install Pi-hole and configure it as your local DNS server
- Set a static IP for the Pi-hole machine
- Show you the admin dashboard password
Installation time: 3–5 minutes on a Raspberry Pi 4.
Docker Installation (If You Already Run Docker)
# Create a docker-compose.yml file:
version: "3"
services:
pihole:
container_name: pihole
image: pihole/pihole:latest
ports:
- "53:53/tcp"
- "53:53/udp"
- "80:80/tcp"
environment:
TZ: 'Europe/London' # Your timezone
WEBPASSWORD: 'your-password' # Change this
volumes:
- './etc-pihole:/etc/pihole'
- './etc-dnsmasq.d:/etc/dnsmasq.d'
restart: unless-stopped
# Start it:
docker-compose up -d
Step 2: Set a Static IP for Pi-hole
Pi-hole must have a fixed IP address so your router can always find it.
On Raspberry Pi OS:
sudo nano /etc/dhcpcd.conf
# Add at the bottom:
interface eth0
static ip_address=192.168.1.100/24
static routers=192.168.1.1
static domain_name_servers=127.0.0.1
Replace 192.168.1.1 with your router’s IP (usually found on the router label).
Step 3: Point Your Router to Pi-hole
Log into your router admin panel (usually at 192.168.1.1 or 192.168.0.1) and find the DNS settings.
Look for: DHCP settings → DNS Server (Primary)
Change the primary DNS to: Your Pi-hole’s static IP (e.g. 192.168.1.100)
Optionally set secondary DNS to: 1.1.1.1 (Cloudflare) as a fallback if Pi-hole goes down
Save and restart your router. Within a few minutes, all devices on your network will be using Pi-hole for DNS.
Step 4: Add Blocklists
The default Pi-hole installation blocks about 300,000 domains. Adding curated blocklists extends this significantly.
Access your Pi-hole admin panel:
Open a browser and go to http://192.168.1.100/admin (replace with your Pi-hole IP).
Go to: Adlists → Add the following URLs:
# Essential lists (add all of these):
# Steven Black's unified hosts (ads + malware)
https://raw.githubusercontent.com/StevenBlack/hosts/master/hosts
# OISD - Big list (comprehensive, low false positives)
https://big.oisd.nl
# AdGuard DNS filter
https://adguardteam.github.io/AdGuardSDNSFilter/Filters/filter.txt
# Telemetry and tracking (Windows, Android, Samsung)
https://raw.githubusercontent.com/crazy-max/WindowsSpyBlocker/master/data/hosts/spy.txt
# Smart TV specific tracking
https://raw.githubusercontent.com/Perflyst/PiHoleBlocklist/master/SmartTV-AGH.txt
After adding, go to Tools → Update Gravity to download and activate all lists.
Typical result: 1.5–2.5 million blocked domains covering ads, tracking, telemetry, malware, and phishing.
Step 5: The Admin Dashboard
Pi-hole’s web dashboard at http://[your-pi-hole-ip]/admin shows you in real time:
- Total queries today — how many DNS lookups your network made
- Queries blocked — how many were ads/trackers (typically 15–30% of all queries)
- Top blocked domains — which ad networks your devices were trying to reach
- Top clients — which device on your network makes the most requests
This view is often eye-opening. Smart TVs typically appear in the top clients because they make constant outbound requests to Samsung/LG/Roku analytics servers. The dashboard makes this visible and blocked.
What to Whitelist
Pi-hole occasionally blocks legitimate domains. Common ones to whitelist:
# Add via command line on Pi-hole:
pihole -w example.com
# Or add via admin panel: Whitelist section
# Common false positives:
# - Some Microsoft Office activation servers
# - Certain bank security checks
# - Steam game update servers (rarely)
# - Some smart home device pairing flows
If a website or service stops working after installing Pi-hole, check the admin dashboard’s Query Log to find which domain is being blocked, then whitelist it.
Pi-hole vs AdGuard Home vs NextDNS
| Pi-hole | AdGuard Home | NextDNS | |
|---|---|---|---|
| Self-hosted | ✅ Yes | ✅ Yes | ❌ Cloud |
| Data sovereignty | ✅ Full | ✅ Full | ⚠️ Cloud logs |
| Setup complexity | Medium | Medium | Low |
| DNS-over-HTTPS | Plugin needed | ✅ Built-in | ✅ Built-in |
| Mobile away from home | ❌ Home only | ❌ Home only | ✅ Everywhere |
| Free | ✅ Yes | ✅ Yes | Freemium |
| Sovereign score | 93/100 | 91/100 | 72/100 |
Use Pi-hole if: You want maximum sovereignty, are comfortable with the command line, and primarily care about home network protection.
Use AdGuard Home if: You want Pi-hole-style sovereignty but with a more polished interface and built-in DNS-over-HTTPS.
Use NextDNS if: You need filtering on mobile devices away from home and are comfortable with a cloud provider (based in France, GDPR-compliant).
Advanced: Combine Pi-hole With Unbound for Full DNS Privacy
By default, Pi-hole forwards your DNS queries to Cloudflare or Google. Those providers see every domain you look up. For complete DNS privacy, combine Pi-hole with Unbound — a recursive DNS resolver that queries authoritative nameservers directly without any third-party intermediary.
# Install Unbound
sudo apt install unbound
# Configure Pi-hole to use Unbound as upstream:
# Pi-hole admin → Settings → DNS → Custom DNS 1: 127.0.0.1#5335
# Basic Unbound config (/etc/unbound/unbound.conf.d/pi-hole.conf):
server:
verbosity: 0
interface: 127.0.0.1
port: 5335
do-ip4: yes
do-udp: yes
do-tcp: yes
root-hints: "/var/lib/unbound/root.hints"
harden-glue: yes
harden-dnssec-stripped: yes
use-caps-for-id: no
edns-buffer-size: 1472
prefetch: yes
num-threads: 1
so-rcvbuf: 1m
private-address: 192.168.0.0/16
private-address: 10.0.0.0/8
With this setup: No DNS provider sees your queries. Pi-hole handles the blocking. Unbound handles the resolution. Your DNS queries go directly to the authoritative nameservers for each domain — completely private.
FAQ
Will Pi-hole break any websites? Occasionally. Pi-hole may block domains that legitimate services depend on. The fix is always simple: check the query log, find the blocked domain, whitelist it. Most users experience 1–3 whitelisting incidents in the first week, then nothing.
Does Pi-hole work on mobile when I’m away from home? No — Pi-hole only protects devices on your home network. When you leave the house, your phone uses its carrier’s DNS. Solutions: use a VPN that points back to your home Pi-hole, or use NextDNS on mobile for away-from-home filtering.
Can my ISP see what I’m browsing if I use Pi-hole? Pi-hole improves privacy by blocking trackers, but your ISP can still see the domains you visit (as DNS queries, unless you use DNS-over-HTTPS). Combine Pi-hole with a VPN or use Unbound as described above for stronger privacy from your ISP.
How much does Pi-hole block? Typically 15–30% of all DNS queries on a home network. Smart TV households often see higher percentages (35–45%) because Samsung and LG TVs are very aggressive with analytics requests.
Does Pi-hole slow down my internet? No — DNS resolution with Pi-hole is typically faster than using your ISP’s DNS because Pi-hole caches results locally. Your ISP’s DNS server may be geographically distant; your Pi-hole is on your local network.
Related Articles
- Self-Host Everything: Sovereign Home Server Guide 2026
- VPN vs Tor vs I2P: Which Actually Protects You in 2026
- De-Google Your Life 2026: Complete Migration Guide
- How to Run AI Locally With Ollama: Complete 2026 Guide
- Best Password Managers 2026: Sovereignty Audit
Sources & Further Reading
- Privacy Guides — Community-vetted privacy tool recommendations
- EFF Surveillance Self-Defense — Practical guides to protecting your digital privacy
- Electronic Frontier Foundation — Advocacy and research on digital rights