Filter ads, trackers, and malware using 1Hosts, a DNS blocklist collection with variants for different needs.
1Hosts
Choose from 1Hosts blocklists that filter ads, trackers, and malware for devices.
About 1Hosts
1Hosts provides two DNS filter lists intended to filter ads, trackers, and malware. Lite is a balanced list described as set-and-forget with low false positives, while Xtra is more aggressive and may occasionally disrupt legitimate sites or services.
The lists are available in formats for tools such as Pi-hole, AdGuard Home, uBlock Origin, DNSCloak, dnsmasq, Unbound, and others, and can also be used through third-party DNS services such as ControlD, NextDNS, AdGuard DNS, and RethinkDNS. Those services have their own update intervals, query limits, and sign-up requirements.
Key features
- Lite blocklist for balanced blocking with low false positives
- Xtra blocklist for aggressive blocking of emerging threats
- Formats for Pi-hole, AdGuard Home, uBlock Origin, and others
- Use via ControlD with DNS-over-HTTPS and DNS-over-TLS
- Use via NextDNS, AdGuard DNS, and RethinkDNS integrations
- Support for wildcard/subdomain and CNAME blocking via DNS providers
Best for: People who want a DNS-level blocklist, including beginners and families using Lite and advanced users willing to troubleshoot Xtra.
Good for
- Maintained since Dec 2, 2017
- Lite version focuses on stability with low false positives
- Available in formats for many common blocking tools and DNS services
Watch out for
- Xtra version may occasionally disrupt legitimate sites or services
- Xtra version has a higher false-positive rate and may need troubleshooting
- Use through NextDNS or AdGuard DNS requires sign-up and has free query caps
1Hosts at a glance
- Website
- o0.pages.dev
- Category
- Privacy & Security › Ad & Tracker Blockers
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- iOS, Web, Windows
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
1Hosts alternatives
Tools and sites you could use instead, ranked by how closely they match.
Block ads, malware, and other sites on devices through Control D’s free public DNS service.
Block threats, ads, and trackers across devices and networks with NextDNS, a configurable DNS service.
Browse blocklists for ads, trackers, and malicious content in Firebog’s blocklist collection.
This curated blocklist identifies sites with AI-generated imagery for use with uBlock Origin or uBlacklist, including search-engine filtering.
Open source
24 alternatives
Configure private DNS and firewall rules on Android with Rethink DNS, including blocklists and request analytics.
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1Hosts FAQ
What is the difference between Lite and Xtra?
Lite is balanced for stability with low false positives, while Xtra blocks more aggressively but has a higher false-positive rate and may disrupt legitimate sites.
How do I use 1Hosts?
Add the appropriate list URL to your ad-blocking client's settings, or use one of the listed DNS options such as ControlD, NextDNS, AdGuard DNS, or RethinkDNS.
Which software can use these lists?
Listed options include AdAway, Blokada, RethinkDNS, DNSCloak, uBlock Origin, AdGuard Home, Pi-hole, dnsmasq, Unbound, and others.
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