EU sovereignCDN, DNS & DomainsHeadquarters: CZ

CDNsun: sovereignty score and 8 European alternatives

CDNsun is a content delivery network run from Prague, Czech Republic, by the company CDNsun s.r.o. Its services cover website acceleration with full-site caching and HTTP/2 support, software and game delivery, ad serving, live streaming over RTMP and HLS, on-demand video streaming and CDN storage. Customers use it as a managed service, delivered from more than 30 data centres worldwide. It is an alternative to CDN services from large international providers for organisations that prefer a European operator with a Czech registered seat.

CDNsun s.r.o. has its registered seat in Prague 5. The Czech Republic is an EU member state, so EU data-protection law applies. The company's GDPR page states that, when acting as a processor, it keeps personal data within the EU and only in countries the European Union recognises, and that a pre-signed data processing agreement is available. The network also includes locations outside the EU, including in the United States, so organisations with residency requirements should confirm which points of presence serve their content. CDNsun is a commercial service, not open-source software.

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Sovereignty score

59 / 1000 = high exposure
100 = sovereign

Jurisdiction SOV-2100
Headquartered in the EU: European law applies
Data residency SOV-350
Hosting inside and outside Europe (EU, US, OTHER)
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-645
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 12, 2026

Headquarters	CZ (EU)Verified by hand
Sovereignty model	Vendor-hosted (EU)Verified by hand
Data hosting	EU, US, OTHERVerified by hand
Open-source	NoVerified by hand
GDPR-compliant	YesVendor-stated
Category	CDN, DNS & Domains
Type	Product
Website	cdnsun.com ↗

How we verify · Something wrong? Suggest a correction

Top EU-based & GDPR-compliant alternatives to CDNsun

The European alternatives to CDNsun come from our knowledge base of over 8,000 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

19 European CDN, DNS & Domains 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 CDNsun

CDNsun 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.

CDNsun hosts data in EU, US, OTHER. Exactly what stays within the EU — and what does not — is defined by the vendor's data processing agreement and sub-processor list, not by a setting you control yourself; check those documents for the precise scope, including backups, logs and support access.

CDNsun 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 CDNsun 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 CDNsun?

It depends on your use case. Strong EU alternatives to CDNsun include Bunny.net, ClouDNS and deSEC. On this page you can compare 8 EU alternatives by jurisdiction, data residency and open-source status.

Are there open-source alternatives to CDNsun?

Yes. Open-source EU alternatives to CDNsun include deSEC, dnsdist and Knot DNS. These keep your data fully under your own control and let you self-host if you want to.

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

CDNsun is headquartered in CZ (EU) and hosts data in EU, US, OTHER. That makes CDNsun 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 12, 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 CDN, DNS & Domains

CDN, DNS & Domains: Content delivery networks, DNS services and domain registration. 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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