Pi-hole: Block Ads on Every Device in Your Home Without Installing Anything on Them

Your smart TV streams ads you cannot block because Samsung's firmware does not allow browser extensions. Your phone shows ads inside apps that no extension can touch. Every game console, tablet, and IoT device (any internet-connected gadget that is not a traditional phone or computer, such as a smart TV, thermostat, or security camera) on your network talks to ad servers freely because per-device ad blocking simply does not reach them. Pi-hole solves that with one install, on one device, once.

Pi-hole is a DNS-based ad blocker. DNS (Domain Name System) is the internet's address book: when your browser types "ads.doubleclick.net," your network asks a DNS server to translate that name into an IP address (the numerical address of the actual server) so it knows where to connect. Pi-hole runs its own private DNS server on your home network and returns a fake "nothing here" answer for any domain on its blocklist, a community-maintained list of millions of known advertising and tracking addresses. The ad request dies before your device ever makes a connection. No extension required. No per-device setup. The protection applies to every device the moment it joins your network.

What Pi-hole actually is

Pi-hole is a self-hosted DNS server that doubles as a network-wide filter. Normally, your internet provider or router handles DNS lookups for every device on your network. Pi-hole replaces that role: you change one setting in your router to tell every device "use Pi-hole for DNS," and from that point on, Pi-hole sees every domain request on your network and decides whether to answer truthfully or return a dead-end for known ad and tracker addresses.

The name comes from its original intended hardware: a Raspberry Pi (a single-board computer the size of a credit card, available for around $35, that runs full Linux and sips power like a night light). Pi-hole runs comfortably on a first-generation Raspberry Pi 1 with 512 MB of RAM. That said, any Linux machine works, including an old laptop, a spare PC, a VPS (a virtual private server, a rented slice of a remote computer you control over the internet), or a Docker container (a self-contained software package that runs identically on any host). Most home setups use a dedicated Raspberry Pi that stays plugged in continuously because the Pi-hole must be reachable for DNS to work across the house.

Blocklists are the engine. Pi-hole ships with a default list and lets you subscribe to community-maintained lists that collectively cover tens of millions of known ad, tracking, and malware domains. These lists update automatically. When a new ad network appears, someone updates the list and Pi-hole picks it up on the next scheduled refresh without you doing anything.

The project has 60,189 GitHub stars and has been in continuous development since 2014. The pi-hole.net documentation is thorough, and the community forum and subreddit are active enough that virtually every setup question has already been answered.

What you get after installing it

Once Pi-hole is running and your router points to it for DNS, the change is immediate and network-wide.

Every device is covered. The smart TV that cannot run extensions, the game console, the baby monitor, the smart speaker, the work laptop your employer owns that you cannot install software on, the phone that shows in-app ads, the Windows PC with telemetry calls going out to Microsoft's servers. If the device uses your home network's DNS, it goes through Pi-hole. No per-device configuration. No additional software anywhere.

The admin dashboard shows you everything. Total DNS queries today, percentage blocked, total domains on your blocklist, top blocked domains, and which devices made the most requests. The graphs update in near real time. You can see at a glance that your smart TV sent 2,000 requests to Samsung's ad servers in the last 24 hours and Pi-hole blocked all of them.

Whitelisting is one click. Pi-hole occasionally blocks a domain a legitimate service depends on. The fix is opening the dashboard, finding the blocked domain in the query log, and clicking Allow. It takes about 20 seconds and the site works again.

Telemetry blocking goes beyond ads. Pi-hole blocks phone-home requests from Windows, Samsung Smart TVs, Android apps, and other devices, not just visible banner ads. That Samsung TV is sending viewing data back to Samsung's analytics servers. Pi-hole can cut that off at the DNS level, the same way it cuts off ads. The result is a measurably quieter network.

You can run multiple blocklist subscriptions. The default list is a good start. Commonly added lists cover tracking, malware domains, telemetry, and coinmining scripts. Adding a list takes about 30 seconds in the settings panel.

The install experience

The standard install is a single command run on any Debian or Raspberry Pi OS system:

curl -sSL https://install.pi-hole.net | bash

The script walks you through a series of configuration prompts in a text-based interface: which network interface to use, which upstream DNS provider to use for sending unblocked queries (upstream means the external DNS server that handles any domain Pi-hole does not block; Google, Cloudflare, and OpenDNS are listed as options), and whether to install the web dashboard. The whole install takes about five minutes and ends with the admin dashboard URL and a randomly generated password printed to the screen.

After the installer finishes, there is one step left that the installer does not do for you: telling your router to use Pi-hole as the DNS server. This is done in your router's DHCP settings (DHCP is the service that assigns IP addresses and DNS server addresses to every device joining the network). The exact menu location varies by router, but it amounts to finding the DNS field and typing Pi-hole's IP address. After that change propagates, every device on the network uses Pi-hole automatically. Most routers apply this within a few minutes; devices that have been connected a while may need a network reconnect before the change takes effect.

The Docker path is equally straightforward for anyone who already runs Docker. Pi-hole maintains an official Docker image at pihole/pihole. A basic docker run command or a short docker-compose.yml file covers the setup, and the image handles all the same configuration that the interactive installer handles.

The friction worth naming: Pi-hole needs to be online for DNS to work. If the Raspberry Pi reboots and takes two minutes to come back up, devices on your network will lose internet access during that window because their DNS resolver is unavailable. The standard solution is either configuring your router with a backup DNS server as a fallback, or setting Pi-hole to start automatically on boot (which it does by default). Most people run Pi-hole for years without thinking about this. But it is worth knowing before you put it on a machine that reboots frequently.

Where it fits and what to compare it to

The most common alternative is a browser extension like uBlock Origin, the most widely used open-source ad blocker. uBlock Origin is excellent for desktop browsers and significantly better at blocking ads that appear inside web pages, because it can see the full page structure and block by element as well as by domain. Pi-hole cannot block ads inside YouTube videos, for example, because those ads are served from the same domains as the actual video content. uBlock Origin can. The tools complement each other: Pi-hole at the network level, uBlock Origin inside browsers that can run it.

AdGuard Home is the closest direct competitor to Pi-hole. It is also a self-hosted DNS-based ad blocker, with a notably more polished web UI, built-in parental controls, and per-device filtering rules. It is actively developed and free to self-host. If you want to try a DNS blocker and want a cleaner dashboard and more granular per-device controls, AdGuard Home is worth evaluating alongside Pi-hole. Pi-hole has a larger community and more years of production use behind it; AdGuard Home is the more modern product.

NextDNS is a cloud-based DNS filtering service, meaning you change your DNS settings to point to NextDNS's servers rather than hosting anything yourself. It offers similar blocklist-based filtering without requiring a Raspberry Pi or any self-hosted hardware. The free tier covers 300,000 queries per month, which is enough for light use; paid plans start at $1.99 per month. The tradeoff is that your DNS traffic goes to NextDNS's servers, not a server inside your house.

Pi-hole fits best when you want every device on your network covered, are comfortable managing a Raspberry Pi or Docker host, and prefer to keep DNS traffic inside your home rather than routing it through a third-party cloud service.

Verdict

Install it. The combination of network-wide coverage, zero cost after hardware, and a large community of users who have already worked through every setup variant makes Pi-hole a low-risk, high-reward install for home use.

The main caveats are real but narrow. Pi-hole does not block ads within YouTube videos or certain in-app ads that are served from the same domains as legitimate content. A browser extension like uBlock Origin handles those cases and is worth running alongside Pi-hole on desktop browsers. Pi-hole also requires an always-on device to host it; if you do not own a Raspberry Pi and do not want to buy one, NextDNS is the alternative that removes the hardware requirement at a small monthly cost.

For anyone with a smart TV, game consoles, or IoT devices that cannot run any ad-blocking software themselves, Pi-hole is the only practical option that covers those devices without touching them individually. The $35 hardware investment and one-time setup pay off every day.

For your agent to install this

You can skip this section. It contains the install details your AI agent needs. If you are using Cowork, Claude Code, ChatGPT Work, Codex, or Hermes, say "install Pi-hole for me" and it will read the tables below.

System requirements

Install command (Linux)

curl -sSL https://install.pi-hole.net | bash

Run as root or with sudo on a fresh system. The interactive installer walks through all configuration options.

Docker install

docker run -d \
  --name pihole \
  --network host \
  -e TZ="America/New_York" \
  -e WEBPASSWORD="your-password-here" \
  -v "$(pwd)/etc-pihole:/etc/pihole" \
  -v "$(pwd)/etc-dnsmasq.d:/etc/dnsmasq.d" \
  --restart=unless-stopped \
  pihole/pihole:latest

Replace America/New_York with your timezone and set a real password. Dashboard is available at http://pi.hole/admin or http://your-pi-ip/admin.

First-run checklist

1. Note the static IP address of the device running Pi-hole
2. Log into your router admin panel (usually at 192.168.1.1 or 192.168.0.1)
3. Find the DHCP settings and set the primary DNS server to Pi-hole's IP address
4. Save and apply the router settings
5. Reconnect devices to the network so they pick up the new DNS assignment
6. Open the Pi-hole admin dashboard and confirm queries are appearing in the log
7. Optional: add additional blocklists under Settings > Blocklists
8. Optional: install uBlock Origin in desktop browsers to cover YouTube ads and in-page elements Pi-hole cannot reach