How to use your custom blocklist with AdGuard DNS
Find the correct URL, add your filter to the right server and check that your DNS service is actually reading your list.
Protection that stays put.
Your own permanent DNS blocklist. Add a domain, keep it blocked, and share one link with every device you want to protect.
US$30, once. No recurring charges.
Example filterLockFilter
Permanentdistractions.example
trackers.example
unwanted.example
lockfilter.com/f/your-filter.txtYou can add. You cannot undo.
Illustrative domains. Your list starts with your own choices.
One decision. A lasting boundary.
For the websites you have already decided to leave behind.
Make your list
Choose the domains you want to block. Review carefully: every addition is permanent.
Connect your DNS
Add the filter URL to a DNS service that accepts custom blocklists, such as AdGuard DNS.
Keep building protection
Add more domains from your dashboard or a separate password-protected contribution link.
Understand what your network is doing.
Connect AdGuard DNS to see query volume, blocked requests and the most requested domains. Share a summary when you choose; your API key stays private.
Explore the demoAdGuard DNSRead-only access
DNS queriesBlockedDomains
A clearer view of DNS
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DNS filter or browser blocker: which should you use?
Compare coverage, limits and precision to choose protection that fits your devices and the boundaries you want to set.
Before creating a permanent DNS filter: what should you block?
A list without an undo button calls for better decisions. Review domains, protect essential services and set digital boundaries that last.
A few things to know
Can I remove a domain later?
No. Domains and filter URLs are permanent. You can add entries and change the contribution password, but there is no deletion or allowlist feature.
Does LockFilter stop me changing my DNS?
No. LockFilter preserves your blocklist. Your DNS service, router and device settings still control whether it is applied. DNS filters work with domains, not individual page paths.
Which DNS services can I use?
The AdGuard format is the default. Plain domain and hosts formats are also available. Your DNS service must accept a custom list URL; check its rules and plan limits.
What does the one-time payment include?
One permanent filter with up to 10,000 domains, a password-protected contribution link and access to DNS reports. Your DNS provider is a separate service and may charge its own fees.