EU Sovereignty Score
EU sovereignDNS Privacy & FilteringHeadquarters: FR

FDN DNS: sovereignty score and 8 European alternatives

FDN (French Data Network) is a French non-profit internet service provider, active since 1992, that offers two open recursive DNS resolvers to anyone: ns0.fdn.fr and ns1.fdn.fr. According to FDN, the aim is to counter censorship on the internet. The resolvers are reachable over IPv4 and IPv6 and validate DNSSEC. Encrypted access is available through DNS over TLS (port 853) and DNS over HTTPS (https://ns0.fdn.fr/dns-query and https://ns1.fdn.fr/dns-query); according to a French networking blog, DoT and DoH have been available since April 2023. You set the address on a router, a device or a local resolver; no account is needed.

The provider is a French association and therefore subject to French and European law; there is no non-European parent company. The service is free and non-commercial, and the software is not published as open source. The service page says nothing about logging or the location of the servers, so nothing can be stated about either here. A March 2025 notice reports that FDN has strengthened the protections on these servers.

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Sovereignty score
71 / 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-360
    Key management with a European vendor
  • Freedom from lock-in SOV-640
    Closed source: switching requires data migration
  • Source & runtime sovereignty SOV-4 · SOV-655
    Closed source, runtime with the vendor

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 4, 2026
Headquarters
FR (EU)Verified by hand
Sovereignty model
Vendor-hosted (EU)Verified by hand
Data hosting
EUVerified by hand
Open-source
NoVerified by hand
GDPR-compliant
YesVendor-stated
Category
DNS Privacy & Filtering
Type
Product
Website
fdn.fr ↗

How we verify · Something wrong? Suggest a correction

Top EU-based & GDPR-compliant alternatives to FDN DNS

The European alternatives to FDN DNS come from our knowledge base of over 6,800 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

24 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 FDN DNS

FDN DNS is headquartered in FR 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 FDN DNS scores best on data residency.

FDN DNS is closed source and hosted by the vendor. The encryption keys and the runtime sit with the vendor and switching requires data migration. Ask about bring-your-own-key, export options and open standards.

What this means for your organisation depends on your whole stack and context. The free assessment weighs FDN DNS 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 FDN DNS?

It depends on your use case. Strong EU alternatives to FDN DNS 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 FDN DNS?

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

Is FDN DNS GDPR-compliant and where is the data hosted?

FDN DNS is headquartered in FR (EU) and hosts data in EU. That makes FDN DNS 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 4, 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

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.

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