Company lists · Data refreshed September 2026
Top 25 IT infrastructure companies based in Japan
RevenueBase identified 166 company matches for IT infrastructure companies associated with Japan as of September 2026 and tracks 8,401 professional contacts across them, including 1,502 with verified work emails. Jing is the largest hub.
This list covers company matches for IT infrastructure companies associated with Japan, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 20, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest IT infrastructure companies based in Japan
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 4,680 contacts → | ||||
Exact match “NTT is a leading global technology innovator, providing a broad range of services to both consumers and businesses.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 2 | 587 contacts → | ||||
Exact match “is a facilities services company based out of Japan.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 3 | 569 contacts → | ||||
Exact match “Ever since its establishment in 1992 as the first Japanese Internet Service Provider, IIJ has been taking pioneering steps in the field of Internet technology.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 4 | 234 contacts → | ||||
Exact match “We are a leading IT services and staff supply company in Japan, with over IT infrastructure engineers specializing in areas such as cloud, servers, and network security.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 5 | 135 contacts → | ||||
Exact match “Through its acquisition of KVH Co.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 6 | 127 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 7 | 52 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 8 | 48 contacts → | ||||
Exact match “X1Studio is a technology design and systems integration company focused on smart buildings, data centers, and hospitality technology platforms.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 9 | 36 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 10 | 36 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 11 | 17 contacts → | ||||
Exact match “Our company, established in 2008, provides IT infrastructure services for each stage of the system life cycles, such as planning, designing, implementation, and testing.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 12 | 11 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 13 | 8 contacts → | ||||
Exact match “Creative Link Corporation is an Information Technology and Services company located in Minato, Tokyo, Japan.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 14 | 8 contacts → | ||||
Exact match “xTom specializes in cloud computing consulting, network infrastructure design, and offers a comprehensive suite of services including dedicated servers, data center colocation…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 15 | 6 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 16 | 5 contacts → | ||||
Exact match “DX http://jp.fujitsu.com/socialmedia/” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 17 | 5 contacts → | ||||
Exact match “Provide high-level IT infrastructure consulting, integration, and training lead by first and only 8xCCIE/CCDE in the world!” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 18 | 5 contacts → | ||||
Exact match “IT\tWEBWEB\t\t\t\t\t\t\t” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 19 | 4 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 20 | 3 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 21 | 3 contacts → | ||||
Exact match “Wintech Solutions Welcome to Wintech Solutions!” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 22 | 3 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 23 | 3 contacts → | ||||
Exact match “Android Systems, Inc.(ASI) is a provider of professional IT services in Tokyo and other locations throughout Japan.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 24 | 2 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 25 | 2 contacts → | ||||
Exact match “LeadingTech is a technical partner company with strengths in the digital, cloud, and AI domains.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “IT infrastructure companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 166 IT infrastructure companies based in Japan
See the full list, filter by size, metro and specialty, and access 1,502 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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IT infrastructure companies based in Japan at a glance
As of Sep 20, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for Japan, so it is reported there. Company counts and contact totals on this page are exact for Japan, over 166 companies.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Company records associated with Japan whose business descriptions match “IT infrastructure companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 1,502 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 20, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “IT infrastructure companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many IT infrastructure companies are there based in Japan?
RevenueBase identified 166 company matches for IT infrastructure companies associated with Japan as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
NTT tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most IT infrastructure companies?
Jing leads with 27 company records, followed by Tokyo (17) and Xian (7).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 1,502 professional contacts with verified work emails tracked across these 166 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 20, 2026.
Ready to reach these companies? Verified emails and direct dials for all 166 IT infrastructure companies based in Japan. Start with a free account, no credit card.
Download this list →Related lists
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Browse the directory
About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- IT infrastructure companies based in Brisbane, Australia
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Company intelligence · public preview
Top 25 IT infrastructure companies based in Japan
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 166 matching company records for IT infrastructure companies based in Japan, with 8,401 tracked contacts and 1,502 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 20, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 IT infrastructure companies based in Japan
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  NTTglobal.nttHQ: Chiyoda-ku, JapanReported employees: 10001+ | Chiyoda-ku, Japan | 10001+ | Exact match | 4,680 contacts → |
“NTT is a leading global technology innovator, providing a broad range of services to both consumers and businesses.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | (株)富士通エフサスfujitsu.com HQ: 川崎市中原区, JapanReported employees: 5,001-10,000 | 川崎市中原区, Japan | 5,001-10,000 | Exact match | 587 contacts → |
“is a facilities services company based out of Japan.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Internet Initiative Japan IIJiij.ad.jpHQ: Tokyo, JapanReported employees: 1,001-5,000 | Tokyo, Japan | 1,001-5,000 | Exact match | 569 contacts → |
“Ever since its establishment in 1992 as the first Japanese Internet Service Provider, IIJ has been taking pioneering steps in the field of Internet technology.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  ISF Net, Inc. Officialisfnet.co.jpHQ: 港区, JapanReported employees: 1,001-5,000 | 港区, Japan | 1,001-5,000 | Exact match | 234 contacts → |
“We are a leading IT services and staff supply company in Japan, with over IT infrastructure engineers specializing in areas such as cloud, servers, and network security.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  KVH Colt Asiaasia.colt.netHQ: Tokyo, JapanReported employees: 201-500 | Tokyo, Japan | 201-500 | Exact match | 135 contacts → |
“Through its acquisition of KVH Co.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | ユニアデックス(株)uniadex.co.jp HQ: 江東区, JapanReported employees: 1,001-5,000 | 江東区, Japan | 1,001-5,000 | Exact match | 127 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 7 | 日商エレクトロニクス(株)nissho-ele.co.jp HQ: JapanReported employees: 501-1,000 | Japan | 501-1,000 | Exact match | 52 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 8 |  X1studio Co., LTDx1studio.co.jpHQ: Minato-ku, JapanReported employees: 51-200 | Minato-ku, Japan | 51-200 | Exact match | 48 contacts → |
“X1Studio is a technology design and systems integration company focused on smart buildings, data centers, and hospitality technology platforms.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | 三菱電機インフォメーションネットワーク(株)mind.co.jp HQ: 港区, JapanReported employees: 1,001-5,000 | 港区, Japan | 1,001-5,000 | Exact match | 36 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 10 |  株式会社ネットワールドnetworld.co.jpHQ: 千代田区, JapanReported employees: 501-1,000 | 千代田区, Japan | 501-1,000 | Exact match | 36 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 11 |  REQ Technology Consulting Co., LTDreqtc.comHQ: Shinbashi, JapanReported employees: 51-200 | Shinbashi, Japan | 51-200 | Exact match | 17 contacts → |
“Our company, established in 2008, provides IT infrastructure services for each stage of the system life cycles, such as planning, designing, implementation, and testing.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Felica Networks, INCfelicanetworks.co.jp HQ: Shinagawa, JapanReported employees: 51-200 | Shinagawa, Japan | 51-200 | Exact match | 11 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 13 |  Creative Link Corporationclc.netHQ: 港区, JapanReported employees: 51-200 | 港区, Japan | 51-200 | Exact match | 8 contacts → |
“Creative Link Corporation is an Information Technology and Services company located in Minato, Tokyo, Japan.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  XTOMxtom.comHQ: Minato City, JapanReported employees: 11-50 | Minato City, Japan | 11-50 | Exact match | 8 contacts → |
“xTom specializes in cloud computing consulting, network infrastructure design, and offers a comprehensive suite of services including dedicated servers, data center colocation…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | (株)クエストquest.co.jp HQ: 港区, JapanReported employees: 501-1,000 | 港区, Japan | 501-1,000 | Exact match | 6 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 16 |  Fujitsu Venturesglobal.fujitsuHQ: Chiyoda-ku, JapanReported employees: 1-10 | Chiyoda-ku, Japan | 1-10 | Exact match | 5 contacts → |
“DX http://jp.fujitsu.com/socialmedia/” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Root Riff Systems, INCrootriff.comHQ: Chiyoda-ku, JapanReported employees: 1-10 | Chiyoda-ku, Japan | 1-10 | Exact match | 5 contacts → |
“Provide high-level IT infrastructure consulting, integration, and training lead by first and only 8xCCIE/CCDE in the world!” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | 株式会社リンクアット・ジャパンla-j.com HQ: 港区, JapanReported employees: 51-200 | 港区, Japan | 51-200 | Exact match | 5 contacts → |
“IT\tWEBWEB\t\t\t\t\t\t\t” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | アットマーク・テクノロジー(株)atmark-tec.co.jp HQ: 江東区, JapanReported employees: 1-10 | 江東区, Japan | 1-10 | Exact match | 4 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 20 | グローバルコムサービス(株)glcom.co.jp HQ: 中央区, JapanReported employees: 51-200 | 中央区, Japan | 51-200 | Exact match | 3 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 21 |  Wintech Solutionswintechsolutions.infoHQ: Tokyo, JapanReported employees: 11-50 | Tokyo, Japan | 11-50 | Exact match | 3 contacts → |
“Wintech Solutions Welcome to Wintech Solutions!” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | (有)ヤングライフプロポーサルylproposal.com HQ: 名古屋市 中区, JapanReported employees: 11-50 | 名古屋市 中区, Japan | 11-50 | Exact match | 3 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 23 |  Android Systems, INCandroid-systems.comHQ: Tokyo, JapanReported employees: 1-10 | Tokyo, Japan | 1-10 | Exact match | 3 contacts → |
“Android Systems, Inc.(ASI) is a provider of professional IT services in Tokyo and other locations throughout Japan.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | (株)アトミテックatomitech.jp HQ: 宇部市, JapanReported employees: 11-50 | 宇部市, Japan | 11-50 | Exact match | 2 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 25 | Leadingtech INCleadingtech.co.jp HQ: Shibuya, JapanReported employees: 11-50 | Shibuya, Japan | 11-50 | Exact match | 2 contacts → |
“LeadingTech is a technical partner company with strengths in the digital, cloud, and AI domains.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 166 company matches
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IT infrastructure companies: dataset insights
September 20, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
164 records in the displayed employee bands.
2 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for Japan, so it is reported there. Company counts and contact totals on this page are exact for Japan, over 166 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 20, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for IT infrastructure companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many IT infrastructure companies did RevenueBase find based in Japan?
The saved snapshot records 166 matching company records, 8,401 tracked contacts and 1,502 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 20, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
IT infrastructure companies by geography
- IT infrastructure companies based in Brisbane, Australia
- IT infrastructure companies based in Melbourne, Australia
- IT infrastructure companies based in Sydney, Australia
- IT infrastructure companies based in Barueri, Brazil
- IT infrastructure companies based in Belo Horizonte, Brazil
- IT infrastructure companies based in Campinas, Brazil
- IT infrastructure companies based in Curitiba, Brazil
- IT infrastructure companies based in Fortaleza, Brazil
- IT infrastructure companies based in Porto Alegre, Brazil
- IT infrastructure companies based in Recife, Brazil
- IT infrastructure companies based in Rio De Janeiro, Brazil
- IT infrastructure companies based in Salvador, Brazil
Browse the directory
Cite this list
RevenueBase Data Team. Top 25 IT infrastructure companies based in Japan. Snapshot: September 20, 2026. https://revenuebase.ai/companies/it-infrastructure-companies/japan.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- IT infrastructure companies based in Brisbane, Australia
- IT infrastructure companies based in Melbourne, Australia
- IT infrastructure companies based in Sydney, Australia
- IT infrastructure companies based in Barueri, Brazil
- IT infrastructure companies based in Belo Horizonte, Brazil
- IT infrastructure companies based in Campinas, Brazil
Company intelligence · public preview
Top 25 IT infrastructure companies based in Japan
RevenueBase records 166 matching company records for IT infrastructure companies based in Japan, with 8,401 tracked contacts and 1,502 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 20, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 IT infrastructure companies based in Japan
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | NTTglobal.ntt HQ: Chiyoda-ku, JapanReported employees: 10001+ | Chiyoda-ku, Japan | 10001+ | Exact match | 4,680 contacts → |
“NTT is a leading global technology innovator, providing a broad range of services to both consumers and businesses.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | (株)富士通エフサスfujitsu.com HQ: 川崎市中原区, JapanReported employees: 5,001-10,000 | 川崎市中原区, Japan | 5,001-10,000 | Exact match | 587 contacts → |
“is a facilities services company based out of Japan.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Internet Initiative Japan IIJiij.ad.jp HQ: Tokyo, JapanReported employees: 1,001-5,000 | Tokyo, Japan | 1,001-5,000 | Exact match | 569 contacts → |
“Ever since its establishment in 1992 as the first Japanese Internet Service Provider, IIJ has been taking pioneering steps in the field of Internet technology.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | ISF Net, Inc. Officialisfnet.co.jp HQ: 港区, JapanReported employees: 1,001-5,000 | 港区, Japan | 1,001-5,000 | Exact match | 234 contacts → |
“We are a leading IT services and staff supply company in Japan, with over IT infrastructure engineers specializing in areas such as cloud, servers, and network security.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | KVH Colt Asiaasia.colt.net HQ: Tokyo, JapanReported employees: 201-500 | Tokyo, Japan | 201-500 | Exact match | 135 contacts → |
“Through its acquisition of KVH Co.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | ユニアデックス(株)uniadex.co.jp HQ: 江東区, JapanReported employees: 1,001-5,000 | 江東区, Japan | 1,001-5,000 | Exact match | 127 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 7 | 日商エレクトロニクス(株)nissho-ele.co.jp HQ: JapanReported employees: 501-1,000 | Japan | 501-1,000 | Exact match | 52 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 8 | X1studio Co., LTDx1studio.co.jp HQ: Minato-ku, JapanReported employees: 51-200 | Minato-ku, Japan | 51-200 | Exact match | 48 contacts → |
“X1Studio is a technology design and systems integration company focused on smart buildings, data centers, and hospitality technology platforms.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | 三菱電機インフォメーションネットワーク(株)mind.co.jp HQ: 港区, JapanReported employees: 1,001-5,000 | 港区, Japan | 1,001-5,000 | Exact match | 36 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 10 | 株式会社ネットワールドnetworld.co.jp HQ: 千代田区, JapanReported employees: 501-1,000 | 千代田区, Japan | 501-1,000 | Exact match | 36 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 11 | REQ Technology Consulting Co., LTDreqtc.com HQ: Shinbashi, JapanReported employees: 51-200 | Shinbashi, Japan | 51-200 | Exact match | 17 contacts → |
“Our company, established in 2008, provides IT infrastructure services for each stage of the system life cycles, such as planning, designing, implementation, and testing.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Felica Networks, INCfelicanetworks.co.jp HQ: Shinagawa, JapanReported employees: 51-200 | Shinagawa, Japan | 51-200 | Exact match | 11 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 13 | Creative Link Corporationclc.net HQ: 港区, JapanReported employees: 51-200 | 港区, Japan | 51-200 | Exact match | 8 contacts → |
“Creative Link Corporation is an Information Technology and Services company located in Minato, Tokyo, Japan.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | XTOMxtom.com HQ: Minato City, JapanReported employees: 11-50 | Minato City, Japan | 11-50 | Exact match | 8 contacts → |
“xTom specializes in cloud computing consulting, network infrastructure design, and offers a comprehensive suite of services including dedicated servers, data center colocation…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | (株)クエストquest.co.jp HQ: 港区, JapanReported employees: 501-1,000 | 港区, Japan | 501-1,000 | Exact match | 6 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 16 | Fujitsu Venturesglobal.fujitsu HQ: Chiyoda-ku, JapanReported employees: 1-10 | Chiyoda-ku, Japan | 1-10 | Exact match | 5 contacts → |
“DX http://jp.fujitsu.com/socialmedia/” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Root Riff Systems, INCrootriff.com HQ: Chiyoda-ku, JapanReported employees: 1-10 | Chiyoda-ku, Japan | 1-10 | Exact match | 5 contacts → |
“Provide high-level IT infrastructure consulting, integration, and training lead by first and only 8xCCIE/CCDE in the world!” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | 株式会社リンクアット・ジャパンla-j.com HQ: 港区, JapanReported employees: 51-200 | 港区, Japan | 51-200 | Exact match | 5 contacts → |
“IT\tWEBWEB\t\t\t\t\t\t\t” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | アットマーク・テクノロジー(株)atmark-tec.co.jp HQ: 江東区, JapanReported employees: 1-10 | 江東区, Japan | 1-10 | Exact match | 4 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 20 | グローバルコムサービス(株)glcom.co.jp HQ: 中央区, JapanReported employees: 51-200 | 中央区, Japan | 51-200 | Exact match | 3 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 21 | Wintech Solutionswintechsolutions.info HQ: Tokyo, JapanReported employees: 11-50 | Tokyo, Japan | 11-50 | Exact match | 3 contacts → |
“Wintech Solutions Welcome to Wintech Solutions!” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | (有)ヤングライフプロポーサルylproposal.com HQ: 名古屋市 中区, JapanReported employees: 11-50 | 名古屋市 中区, Japan | 11-50 | Exact match | 3 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 23 | Android Systems, INCandroid-systems.com HQ: Tokyo, JapanReported employees: 1-10 | Tokyo, Japan | 1-10 | Exact match | 3 contacts → |
“Android Systems, Inc.(ASI) is a provider of professional IT services in Tokyo and other locations throughout Japan.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | (株)アトミテックatomitech.jp HQ: 宇部市, JapanReported employees: 11-50 | 宇部市, Japan | 11-50 | Exact match | 2 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 25 | Leadingtech INCleadingtech.co.jp HQ: Shibuya, JapanReported employees: 11-50 | Shibuya, Japan | 11-50 | Exact match | 2 contacts → |
“LeadingTech is a technical partner company with strengths in the digital, cloud, and AI domains.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 166 company matches
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IT infrastructure companies: dataset insights
September 20, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
164 records in the displayed employee bands.
2 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for Japan, so it is reported there. Company counts and contact totals on this page are exact for Japan, over 166 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 20, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for IT infrastructure companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many IT infrastructure companies did RevenueBase find based in Japan?
The saved snapshot records 166 matching company records, 8,401 tracked contacts and 1,502 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 20, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
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Browse the directory
Cite this list
RevenueBase Data Team. Top 25 IT infrastructure companies based in Japan. Snapshot: September 20, 2026. https://revenuebase.ai/companies/it-infrastructure-companies/japan.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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