Network-Wide Protection
Pi-hole blocks ads and trackers at the DNS level for every device on the network. It works by acting as a local DNS sinkhole: when any device tries to resolve a domain used for ads, telemetry, or tracking, the request is intercepted and either answered with a null route or prevented from resolving entirely. Because DNS is the first step in almost all internet connections, this effectively stops unwanted content before it is ever downloaded, regardless of the app, browser, or device making the request.
Router Integration
By pointing my router’s DNS to the Pi, every device automatically uses it without needing any per-device configuration. This is typically done by setting the Pi-hole’s IP address as the primary DNS server in the router’s DHCP settings, so that all clients—phones, laptops, smart TVs, IoT devices, and guest devices—receive it automatically when they join the network. As a result, even devices that do not allow custom DNS settings are still filtered transparently.
Immediate Impact
Cleaner browsing, fewer trackers, and faster page loads across all devices. Since blocked domains never resolve, devices spend less time waiting on ad servers or third-party tracking endpoints, which reduces both bandwidth usage and latency. Over time, this also reduces background network noise from telemetry and analytics calls that many apps repeatedly make in the background, even when they are not actively in use.
Works Anywhere
When connected via VPN, filtering still applies: OpenVPN setup Because VPN traffic is routed back through the home network, DNS queries continue to be handled by Pi-hole even when the device is remote. This extends the same domain-level blocking rules outside the local Wi-Fi environment, ensuring consistent filtering whether the device is at home or connected from another location.
Automatic on Mobile
My phone connects automatically when off Wi-Fi: iPhone VPN automation This ensures that whenever the device leaves the home network, it automatically re-establishes a secure tunnel back to the Pi-hole DNS resolver. As a result, mobile data usage still benefits from the same ad and tracker blocking rules, without requiring manual VPN activation or DNS reconfiguration.
Part of the Full Stack
Runs alongside everything else: Pi system overview Pi-hole is integrated into a broader home infrastructure where it acts as the foundational DNS layer for all other services. By centralizing name resolution at the network level, it complements other self-hosted tools and ensures that every connected system inherits the same filtering rules automatically, maintaining consistency across the entire environment.