Operator comparison
Internet Initiative Japan (IIJ) vs NTT Communications (NTT DOCOMO BUSINESS) — Nexcenter
Both columns come from the facilities each operator publishes and Coloprice tracks: Internet Initiative Japan (IIJ) — 12 facilities in 1 countries, NTT Communications (NTT DOCOMO BUSINESS) — Nexcenter — 10 facilities in 1 countries. Score is the independent Coloprice Score of each facility, averaged; it is never sold.
Internet Initiative Japan (IIJ)
12
Tracked facilities · Countries: 1
Where they operate: Japan
NTT Communications (NTT DOCOMO BUSINESS) — Nexcenter
10
Tracked facilities · Countries: 1
Where they operate: Japan
Portfolios side by side
| Field | Internet Initiative Japan (IIJ) | NTT Communications (NTT DOCOMO BUSINESS) — Nexcenter |
|---|---|---|
| Tracked facilities | 12 | 10 |
| Countries | 1 | 1 |
| Cities | 5 | 4 |
| Published IT capacity | 20 MW (1 of 12 sites publish) | not published |
| Operational | 12 | 10 |
| Under construction / announced | 0 | 0 |
| Liquid-cooled sites | 0 | 7 |
| AI-ready sites | 0 | 1 |
| Most common certifications | ISO 14001, ISO 27001, FISC, JDCC Facility Standard Tier 3 | FISC facility-standard compliance, JDCC Tier 4, NVIDIA DGX-Ready Data Center Program |
| Average Coloprice Score | 11/100 across 12 scored sites | 14/100 across 10 scored sites |
| Awards and badges | 2 | 1 |
| Highest-scored facility | IIJ Shiroi Data Center Campus (37/100) | Nexcenter Takamatsu 2 Data Center (35/100) |
Counts are the Coloprice catalog as of 2026-09-26; benchmarks are the Colocation Price Index (Q3 2026). Operators publish some facts and not others — an empty cell means «not published», not zero.
Where they differ
Only fields both sides publish and where the values are not identical. This is not a judgement: the right choice depends on the workload, the contract and the site.
- Tracked facilities: Internet Initiative Japan (IIJ) — 12; NTT Communications (NTT DOCOMO BUSINESS) — Nexcenter — 10
- Cities: Internet Initiative Japan (IIJ) — 5; NTT Communications (NTT DOCOMO BUSINESS) — Nexcenter — 4
- Operational: Internet Initiative Japan (IIJ) — 12; NTT Communications (NTT DOCOMO BUSINESS) — Nexcenter — 10
- Liquid-cooled sites: Internet Initiative Japan (IIJ) — 0; NTT Communications (NTT DOCOMO BUSINESS) — Nexcenter — 7
- AI-ready sites: Internet Initiative Japan (IIJ) — 0; NTT Communications (NTT DOCOMO BUSINESS) — Nexcenter — 1
- Most common certifications: Internet Initiative Japan (IIJ) — ISO 14001, ISO 27001, FISC, JDCC Facility Standard Tier 3; NTT Communications (NTT DOCOMO BUSINESS) — Nexcenter — FISC facility-standard compliance, JDCC Tier 4, NVIDIA DGX-Ready Data Center Program
- Average Coloprice Score: Internet Initiative Japan (IIJ) — 11/100 across 12 scored sites; NTT Communications (NTT DOCOMO BUSINESS) — Nexcenter — 14/100 across 10 scored sites
- Awards and badges: Internet Initiative Japan (IIJ) — 2; NTT Communications (NTT DOCOMO BUSINESS) — Nexcenter — 1
- Highest-scored facility: Internet Initiative Japan (IIJ) — IIJ Shiroi Data Center Campus (37/100); NTT Communications (NTT DOCOMO BUSINESS) — Nexcenter — Nexcenter Takamatsu 2 Data Center (35/100)
Published for only one side: Published IT capacity.
Highest-scored facility
Internet Initiative Japan (IIJ)
IIJ Shiroi Data Center Campus
Tokyo, Japan · 20 MW · 37/100
NTT Communications (NTT DOCOMO BUSINESS) — Nexcenter
Nexcenter Takamatsu 2 Data Center
Takamatsu, Kagawa, Japan · 35/100
Open Internet Initiative Japan (IIJ) profile →Open NTT Communications (NTT DOCOMO BUSINESS) — Nexcenter profile →
Other comparisons
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