EU Sovereignty Score
EU sovereignDNS Privacy & FilteringHeadquarters: CZ

Whalebone: sovereignty score and 8 European alternatives

Whalebone is a Czech cybersecurity company that provides protective DNS services to telecom operators, internet service providers, enterprises and public institutions. Its product lines are Aura for telcos, Immunity for businesses and public bodies, and Peacemaker, a DNS resolver for ISPs. According to the company, the services protect networks and devices without installing software or changing the network architecture. The company also says it develops and operates the DNS4EU resolver, which the European Commission selected as the official EU public DNS resolver.

Whalebone was established in 2016 in Brno and is therefore an EU-based company subject to EU data protection law. The public pages do not state where resolvers and customer data are hosted, nor name the owners. For a European organisation, the Czech seat and EU-based operation are relevant, but the hosting location and any parent company should be confirmed in a contract or data processing agreement before use.

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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 11, 2026
HeadquartersCZ (EU)Verified by hand
Sovereignty modelVendor-hosted (EU)Verified by hand
Data hostingEUVerified by hand
Open-sourceNoVerified by hand
GDPR-compliantYesVendor-stated
CategoryDNS Privacy & Filtering
TypeProduct
Websitewhalebone.io ↗

How we verify · Something wrong? Suggest a correction

Top EU-based & GDPR-compliant alternatives to Whalebone

The European alternatives to Whalebone 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 Whalebone

Whalebone is headquartered in CZ 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 Whalebone scores best on data residency.

Whalebone 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 Whalebone 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 Whalebone?

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

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

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

Whalebone is headquartered in CZ (EU) and hosts data in EU. That makes Whalebone 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 11, 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 Whalebone — GDPR-compliant & EU-hosted · EU Sovereignty Score