EU Sovereignty Score
Self-hosted / open sourceDNS Privacy & FilteringHeadquarters: DE

DNSvizor: sovereignty score and 8 European alternatives

DNSvizor is a DNS resolver and DHCP server for local networks, aimed at those who want a compact replacement for dnsmasq-style setups. The software runs as a MirageOS unikernel, a minimal OCaml-based operating system that contains only the code the service needs. The project lists privacy measures such as query name minimisation and opportunistic encryption towards authoritative name servers, configurable domain blocklists, DNSSEC, and DNS-over-TLS and DNS-over-HTTPS. It is delivered as source code and as pre-built binaries.

DNSvizor is licensed under BSD-2-Clause and developed by Robur, a non-profit software cooperative that is a project of Änderwerk, a charity registered in Germany. Because you run it yourself on your own hardware, DNS queries and lease data stay inside your network. Development was co-funded through the EU's NGI Zero programme, run by NLnet. Reproducible builds are published at builds.robur.coop.

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Sovereignty score
94 / 1000 = high exposure
100 = sovereign
  • Jurisdiction SOV-2100
    Headquartered in the EU: European law applies
  • Data residency SOV-3100
    EU-only hosting
  • Cryptographic key sovereignty SOV-390
    Self-hostable: encryption keys under your own control
  • Freedom from lock-in SOV-680
    Open source: low switching costs
  • Source & runtime sovereignty SOV-4 · SOV-6100
    Source code auditable, forkable and self-hostable

SOV codes: the matching objective in the European Commission's Cloud Sovereignty Framework. Official source

How the score is calculated

Facts and evidence

Last checked October 16, 2026
Headquarters
DE (EU)Verified by hand
Sovereignty model
Open-source, distributedVerified by hand
Data hosting
EUVerified by hand
Open-source
YesVerified by hand
GDPR-compliant
YesVendor-stated
Category
DNS Privacy & Filtering
Type
Product
Website
github.com ↗

How we verify · Something wrong? Suggest a correction

Top EU-based & GDPR-compliant alternatives to DNSvizor

The European alternatives to DNSvizor come from our knowledge base of over 9,500 vendors. We only list vendors headquartered in the EU or the EEA; fully European-owned vendors rank before vendors with a foreign owner. For each alternative you see the country, the open-source status and a short description.

Score per alternative: 0 = high exposure, 100 = sovereign

26 European DNS Privacy & Filtering vendors are in the catalogue. View the whole category · Submit an alternative · View category on the map

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Why digital sovereignty matters with DNSvizor

DNSvizor is headquartered in DE and therefore falls under European law: the GDPR, NIS2 and the Data Act. No foreign legislation can compel access to your data.

Data is hosted exclusively in the EU, so DNSvizor scores best on data residency.

DNSvizor is open source. You can audit the source code, self-host the software and keep the encryption keys under your own control. Switching is easier because data and software are not tied to a single party.

What this means for your organisation depends on your whole stack and context. The free assessment weighs DNSvizor together with your other vendors and gives a total score, a heatmap and the main risk drivers.

Frequently asked questions

What is the best European alternative to DNSvizor?

It depends on your use case. Strong EU alternatives to DNSvizor include AdGuard DNS, AdGuard Home and Blocky. On this page you can compare 8 EU alternatives by jurisdiction, data residency and open-source status.

Are there open-source alternatives to DNSvizor?

Yes. Open-source EU alternatives to DNSvizor include AdGuard Home and Blocky. These keep your data fully under your own control and let you self-host if you want to.

Is DNSvizor GDPR-compliant and where is the data hosted?

DNSvizor is headquartered in DE (EU) and hosts data in EU. It is also open-source, so you can self-host it. That makes DNSvizor an EU-sovereign choice in its own right; the EU alternatives on this page are comparable European tools.

Details and sources

Verified by handHeadquarters, owner, hosting locations and licence have been checked by us against public sources. Free of charge and for every vendor, not a paid label. Nothing in this knowledge base is taken over automatically. Last checked on October 16, 2026.

Sources

Public sources used in the latest check of this record.

Compliance evidence

The links below point to the vendor's own public documents. We only record what we found: a missing link means "not found publicly", not "not compliant".

No public compliance evidence has been recorded for this vendor yet. Do you know its DPA or subprocessor list? Something wrong? Suggest a correction

In the changelog

Earlier changes to this page, as listed in the public changelog.

Digital sovereignty in DNS Privacy & Filtering

DNS Privacy & Filtering: Privacy-friendly DNS services, ad blocking and DNS filtering. In this category the choice of vendor determines who has legal access to your data, where that data lives and how easily you can switch later.

Also in this category

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8 European alternatives to DNSvizor — GDPR-compliant & EU-hosted · EU Sovereignty Score