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DataCentersExposed
Mapped (unverified)

NTT東日本 小曽木電話交換局

Tokyo, Japan

Source: OpenStreetMap

NTT東日本 小曽木電話交換局 is a mapped data center in Tokyo, Japan, operated by NTT Global Data Centers. DataCentersExposed has documented a 3,050 sq ft footprint and 1 environmental-permit record at this site. It runs on Japan's grid, which was 67% fossil-fuelled at 477 gCO₂e/kWh in 2025 (Ember).

Reporting by · Updated Jun 14, 2026

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Real parent
NTT Global Data Centers
Operator
NTT Global Data Centers
Footprint
3,050 sq ft
Grid carbon
477 gCO₂/kWh
Clean electricity
33%
Region
Tokyo
Attribution & capacity confidence:mediumprimary source

Overview

source: link

NTT東日本 小曽木電話交換局 is a mapped data center in Japan, run by NTT Global Data Centers. Available records describe it as an NTT data center with a reported footprint of 3,050 square feet. No ultimate parent above the operator is disclosed in the available records.

Operator chain

The grid behind this site

source: Ember · Eurostat
Grid carbon intensity
477 gCO₂/kWh
Clean electricity
33%
Fossil electricity
67%

National grid context, not this facility's own metering. Full country picture: Japan data centers.

In the news

source: Google News (local + English)

Environmental permits

source: Permit register
  • NTT GLOBAL DATA CENTERS EMEA UK LTDEPR/BP3800PZ
    EPR permit · holder "NTT GLOBAL DATA CENTERS EMEA UK LTD" · Dacorum · Combustion; Any Fuel =>50MW - 1.1 A(1) a) · within ~2 km of the mapped site
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Methodology & sources

Every row carries a confidence level (high / medium / low) and a source URL. Spot an error? Tell us.