11 markets

Japan's overwhelming center of gravity: Tokyo itself is now the single largest market tracked here, alongside the Inzai (Chiba), Yokohama/Kawasaki (Kanagawa), Saitama, Tsukuba (Ibaraki), Oyama (Tochigi), and Maebashi (Gunma) satellite hubs that ring the capital — several of which exist precisely because central Tokyo's power grid is running out of room.

3 markets

Osaka is directly represented here as Japan's second-largest concentration after Tokyo, with Kobe and Maizuru rounding out a corridor that JLL and other research firms flag as the country's fastest-growing hub outside the capital.

5 markets

Includes Nagoya (Aichi), the Hokuriku facilities around Kanazawa, Nagano, and Niigata/Shizuoka — a manufacturing-heavy corridor with growing interconnection demand.

3 markets

Cold climate and abundant wind/solar resources make Hokkaido a focal point for renewable-powered and free-air-cooled facilities, headlined by SoftBank's Tomakomai AI campus, with Iwamizawa adding further regional capacity.

3 markets

Fukuoka anchors this region as a connectivity gateway toward Korea and mainland Asia, with Kagoshima and Genkai (Saga) representing further reach across the island.

4 markets

Hiroshima, Okayama, Matsue, and Yamaguchi represent early-stage regional capacity on the San'yo/San'in coasts.

2 markets

Takamatsu is the island's principal cluster, with Matsuyama adding further coverage — both serving as redundancy/disaster-recovery locations relative to the Honshu mainland.

2 markets

Naha's position on subsea cable routes toward Taiwan and Southeast Asia gives Okinawa a distinct connectivity role despite its small facility count.

3 markets

A smaller footprint so far, with facilities in Sendai, Fukushima, and Aomori offering an alternative to Kanto's power-constrained core.