NTT DATA Keihanna OSK11 Data Center, Hikaridai, Seika

NTT DATA Keihanna OSK11 Data Center — existing operations

Operational last observed as of 2026-10-20 · Authoritative status update

Internet Archive raw copy (timestamp 20260409111832) of the same OSK11 page. Its visible text matches the 20 October 2026 version (opened February 2026, four storeys, 10,900 m2 server rooms, 30 MW IT load, about 28,894 m2, 精華町), except that 10,900m2 and CO2 are written with superscript and subscript markup; it lacks nothing that the later version adds. evidence

NTT DATA Japan Corporation (archived by Internet Archive) · publication date not stated

NTT DATA's Japan sitemap lists https://www.nttdata.com/jp/ja/services/datacenter/keihanna with lastmod 2026-10-20T03:37:50+09:00 and the data-centre top page https://www.nttdata.com/jp/ja/services/datacenter with lastmod 2026-10-20T03:28:49+09:00; 19 of its 4,343 URLs carry 20 October 2026. evidence

NTT DATA Japan Corporation · publication date not stated

NTT DATA's data-centre top page lists its main domestic data centres (Mitaka EAST, Mitaka, Otemachi, Dojima, Keihanna OSK11, Shinagawa and others). Its OSK11 entry still carries an older blurb describing the facility as scheduled to open in Soraku District, Kyoto (京都府相楽郡に開設予定) for high-load uses such as generative AI, and links to the OSK11 page. The blurb is contradicted by the OSK11 page itself (opened February 2026) and by the 9 April 2026 opening topic; it is recorded as a stale summary, not used for status. evidence

NTT DATA Japan Corporation · publication date not stated

NTT DATA Group says that, through its data-centre subsidiary NTT Global Data Centers Corporation (NTT GDC), it has formally opened the Keihanna OSK11 data centre in the Kyoto Keihanna area; OSK11 is designed as a next-generation AI-ready data centre adjacent to NTT group R&D facilities, provides 30 MW of IT capacity to 10,900 m2 of server rooms for hyperscalers and enterprises, is designed to Tier III-equivalent redundancy and is run under a global-standard operations regime. NTT GDC is described as the group investment subsidiary that builds, owns and wholesales data centres for the NTT group globally. Named media contacts are not copied. evidence

NTT DATA Group Corporation · published 2026-04-09

Six-page site brochure linked from the OSK11 page: four-storey base-isolated building, 10,900 m2 of IT space, 30 MW IT power, water cooling in N+1 with direct liquid cooling available, carrier-neutral with three cable entries and two meet-me rooms, 24x7 on-site security; power receiving 77 kV from mid-2029 and 22 kV at completion; certifications (ISO 27001, PCI DSS, SOC1/SOC2 Type 2) listed as being considered. No street address. evidence

NTT DATA, Inc. · publication date not stated

Plan filed with the Governor of Kyoto under the prefectural global-warming and renewable-energy ordinances and published by the prefecture: builder NTTグローバルデータセンター株式会社 (Otemachi 2-3-1, Chiyoda, Tokyo); new building （仮称）京阪奈ビル at 京都府相楽郡精華町光台二丁目4番; steel frame, four storeys; site 72,525.28 m2; building area 9,132.25 m2; total floor area 28,915.20 m2 (office use category); planned works 25 March 2024 to 30 December 2025; CASBEE BEE 1.2 (B+). The company representative named on the form is not copied. evidence

Kyoto Prefecture (filing by NTT Global Data Centers Corporation) · publication date not stated

Prefectural list of specified buildings (2,000 m2 or more) whose plans were filed since April 2021, outside Kyoto City and Uji. Row 623 is （仮称）京阪奈ビル, Yamashiro region, 精華町, 28,915.2 m2, office use, BEE 1.2. The same list includes, in Seika, row 523 NEW CONSTRUCTION OF OSAKA KEIHANNA DATA CENTRE (43,136.17 m2), row 639 （仮称）KIX01Aデータセンター新築工事 (22,073.06 m2) and row 651 （仮称）精華町光台二丁目計画新築工事 (38,731.92 m2), which are separate facilities held in this fragment. evidence

Kyoto Prefecture · publication date not stated

FY2024 page of the prefecture's specified-building disclosure: entry 623 （仮称）京阪奈ビル, planned start 2024-03-25, planned completion 2025-12-30, location 精華町, office use, new build, 28,915.20 m2, sustainability ranking B+ (BEE 1.2), with links to the plan (623keikaku.pdf) and CASBEE sheets. evidence

Kyoto Prefecture · publication date not stated

Companies

• Owner: NTT Global Data Centers Corporation (current) evidence
• Operator: NTT Global Data Centers (current) evidence