maincubes
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maincubes is a German-owned, Frankfurt-headquartered colocation operator that builds and runs its own data centers across three European hub markets — Frankfurt, Berlin, and Amsterdam — with a combined portfolio the company describes as over 400 MW of capacity either operating or under development as of 2026. Founded in 2012 and majority-owned by investment firm DTCP (with Art-Invest/Zech Group as a prior co-owner), maincubes positions itself as a specialist in build-to-suit and multi-tenant colocation for hyperscale, HPC, AI, and public-sector customers, emphasizing 100% European ownership and data sovereignty as a differentiator for government and enterprise clients. Its facility roster includes multiple named buildings in the Frankfurt area (FRA01 in Offenbach, FRA02 in Frankfurt itself, FRA03 in Schwalbach am Taunus on a former Samsung site, and FRA04 under construction in Dietzenbach), a completed Berlin site (BER01, leased to Germany’s federal IT agency ITZBund) plus a large new Berlin-area campus under construction in Nauen (BER02/’mainHub Berlin’), and an Amsterdam facility (AMS01) in Schiphol-Rijk. The company does not sell cloud services of its own; instead it offers colocation and connectivity (via its ‘secureexchange’ platform) that let customers reach third-party cloud and network providers.
maincubes has a confirmed data center presence at the following locations:
FACILITY OPERATOR
Phone: +49 69 6976810-0 Email: [email protected]
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maincubes Data Center Locations
- Berlin, Berlin, Germany BER01 PENDING REVIEW
BER01's primary tenant is ITZBund, the central IT service provider for Germany's federal government, which supports around 200 federal agencies. - Nauen, Brandenburg, Germany BER02 PENDING REVIEW
The 'mainHub Berlin' campus in Nauen sits on a 14-hectare site acquired in October 2024 and is planned to scale from an initial 200MW up to 400MW across as many as six buildings. - Dietzenbach, Hesse, Germany FRA04 CARRIER-NEUTRAL PENDING REVIEW
Targeted for completion by 2027 with about 40MW of IT capacity, FRA04 is described as maincubes' largest development to date. - Frankfurt am Main, Hesse, Germany FRA02 PENDING REVIEW
This single-tenant, government-leased facility feeds recovered waste heat from its servers directly into the local municipal heating network. - Offenbach am Main, Hesse, Germany FRA01 PENDING REVIEW
The facility sits within a dense Frankfurt–Offenbach data center hub, roughly 800 meters from the DE-CIX internet exchange point. - Schwalbach am Taunus, Hesse, Germany FRA03 PENDING REVIEW
FRA03 was built on a site formerly owned by Samsung and reached structural completion of its first 16MW module in mid-2025 after being announced in 2022. - Amsterdam, Netherlands AMS01 CARRIER-NEUTRAL PENDING REVIEW
AMS01 hosted the first European Open Compute Project Experience Center and received OCP Ready certification in 2020 following a 2018 redesign.
By Continent
Common Questions
Does maincubes offer AI/GPU-specific data center infrastructure?
Yes — maincubes' FRA04 facility in Dietzenbach, near Frankfurt, is explicitly described as being designed to meet hyperscale, HPC, and AI infrastructure demands, and the company's newer Berlin-area capacity is marketed as 'AI-ready' with 'AI/HPC-ready cooling options' as of 2026.
Where does maincubes operate data centers?
maincubes operates or is building facilities in three metro areas: Frankfurt (Offenbach, Frankfurt city, Schwalbach am Taunus, and Dietzenbach), Berlin (Charlottenburg-Wilmersdorf and a new campus in Nauen), and Amsterdam (Schiphol-Rijk) — all within Germany and the Netherlands.
Who owns maincubes?
maincubes was founded in 2012 and is majority-owned by investment firm DTCP, after DTCP increased its stake by acquiring shares from prior co-owner Art-Invest Real Estate, part of Germany's Zech Group.
Is maincubes' Berlin BER01 data center a public-sector facility?
Yes — BER01, located on the GoWest campus in Berlin-Schmargendorf, was built as a single-tenant, build-to-suit facility with the Informationstechnikzentrum Bund (ITZBund), Germany's federal government IT service provider, as its primary tenant.
Does maincubes offer colocation services?
Yes — we've identified 7 facilities where maincubes may offer colocation services. Please contact maincubes directly to confirm current availability and terms.
Does maincubes offer cloud services?
We haven't confirmed cloud services for maincubes yet — this isn't a definitive no, since our research can miss things. Please contact maincubes directly to confirm cloud availability.
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