NTT Zurich 1

Hofwisenstrasse 56

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The site was opened in June 2011, is located in Rümlang near Zurich. The building, consisting of two parts, has about 7,000 sqm of high-availability data center space in the first building. The building has also obtained LEED Platinum Pre-Certification from the US Green Building Council.

Site History

The site was formerly known as "e-shelter Zurich"


  • Two independent feeds on the medium voltage level 16 kV
  • Two separate UPS systems (A- and B-supply)
  • Redundant emergency power system with diesel generators


  • Monitoring by e-shelter own 24/7 Security Command and Control Center with security personnel from e-shelter security on-site
  • Standardized security processes and the 7-level security system secure the tenant areas and technical operations
  • Access control via non-contact chip and PIN or optional biometrics signature
  • Secured perimeter zones with electronically monitored security fencing system, incorporating anti-climb and anti-tunneling protection


  • Carrier-neutral
  • Carrier-mix from global Tier 1 supplier to local supplier
  • Direct, redundant connection to SWISSIX
  • Via several partners direct connection to international internet exchanges
  • Cross-Connects are realized via dedicated, redundant designed pipelines
  • Datacenter Connects between the data center Zurich and e-shelter locations, e.g. Campus Frankfurt 1 and Frankfurt 3; on request as well to commercial third-party data centers

Map and Nearby Locations:

Hofwisenstrasse 56
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Sites within 15 miles of NTT Zurich 1

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Distance Site About
1.34 miles Interxion ZUR2
1.39 miles Interxion ZUR3
1.44 miles Interxion Zurich
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4.25 miles Green Datacenter Dielsdorf Campus
4.38 miles Level3 Zürich
4.40 miles EXA Zurich
4.40 miles Equinix Zurich ZH2 ZH4
4.42 miles Equinix Zürich ZH1
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5.06 miles Google Zurich
The Google Cloud Region in Zurich was announced in May 2018 and opened in March 2019.
5.75 miles Green Datacenter Zurich City (Schlieren)
9.22 miles Vantage Zurich ZRH1
10.42 miles STACK ZUR01
15.37 miles Green Datacenter Lupig Zurich West 1 + 2
16.95 miles STACK ZURL1 Beringen

NTT Zurich 1 Data Center Photos

Small field next to e shelter's facility in Rümlang

View from Hofwisenstrasse road

Operating Company

Global Data Centers is a division of NTT DATA. The company is one of the largest in the data center providers in the world, spanning more than 20 countries and regions, including the Americas, Asia Pacific, EMEA and India. NTT is routinely recognized as a Leader by leading networking and data center analysts.

As a neutral operator, NTT offers access to multiple cloud providers, a large variety of internet exchanges and telecommunication network providers including our own IPv6-compliant Tier 1 Global IP Network.

81 Facilities Owned
30 Markets Served
940.3 Megawatts
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Name Date Added Description
esag_broschuere_zhr_en_2019 June 2019

Zurich data sheet (English)

emea_zrh1_brochure_190520 November 2020

Zurich 1 Data Sheet (PDF)