Company lists · Data refreshed September 2026
Top 21 IT infrastructure outsourcing companies based in Japan
RevenueBase identified 115 company matches for IT infrastructure outsourcing companies associated with Japan as of September 2026 and tracks 2,604 professional contacts across them, including 375 with verified work emails. Jing is the largest hub.
This list covers company matches for IT infrastructure outsourcing 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 21, 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 21 largest IT infrastructure outsourcing companies based in Japan
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 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 21, 2026 · View company records in RevenueBase | |||||
| 2 | 455 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 3 | 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 21, 2026 · View company records in RevenueBase | |||||
| 4 | 127 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 5 | 106 contacts → | ||||
Exact match “PERSOLITIT As part of PERSOL group, PERSOL PROCESS & TECHNOLOGY (PP & T) is an IT outsourcing & System Development company which revolutionize the business process of our…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 6 | 65 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 7 | 27 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 8 | 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 21, 2026 · View company records in RevenueBase | |||||
| 9 | 14 contacts → | ||||
Exact match “Joho Technology Inc: Complete IT support for small and medium sized businesses Managing your firm's ever-changing technology needs starts with selecting the right partner.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 10 | 6 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 11 | 4 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 12 | 3 contacts → | ||||
Exact match “IT outsourcing Business connect E-commerce” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 13 | 3 contacts → | ||||
Exact match “Wintech Solutions Welcome to Wintech Solutions!” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 14 | 3 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 15 | 2 contacts → | ||||
Exact match “With a wide range of experience in the Japanese IT industry we provide consulting services, software development, infrastructure management and security solutions for connected…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 16 | 2 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 17 | 1 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 18 | 1 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 19 | 1 contacts → | ||||
Exact match “Works we can do are below.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 20 | 1 contacts → | ||||
Exact match “InfoPocket provides the very best in IT Infrastructure Projects and Professional Web Site Design and Development services to the greater Tokyo area and throughout Japan.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 21 | 1 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 21, 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 outsourcing 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 21 of 115 IT infrastructure outsourcing companies based in Japan
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IT infrastructure outsourcing companies based in Japan at a glance
As of Sep 21, 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 115 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 outsourcing 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 375 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 21, 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 outsourcing companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many IT infrastructure outsourcing companies are there based in Japan?
RevenueBase identified 115 company matches for IT infrastructure outsourcing 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?
Internet Initiative Japan IIJ tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most IT infrastructure outsourcing companies?
Jing leads with 22 company records, followed by Tokyo (12) and Xian (4).
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 375 professional contacts with verified work emails tracked across these 115 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 21, 2026.
Ready to reach these companies? Verified emails and direct dials for all 115 IT infrastructure outsourcing companies based in Japan. Start with a free account, no credit card.
Download this list →Related lists
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- IT infrastructure outsourcing companies based in Recife, Brazil
- IT infrastructure outsourcing companies based in Rio De Janeiro, Brazil
- IT infrastructure outsourcing companies based in Salvador, Brazil
- IT infrastructure outsourcing companies based in Sao Paulo, Brazil
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
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- New lists
- IT infrastructure outsourcing companies based in Brisbane, Australia
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Company intelligence · public preview
Top 21 IT infrastructure outsourcing 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 115 matching company records for IT infrastructure outsourcing companies based in Japan, with 2,604 tracked contacts and 375 verified work emails.
This public preview shows 21 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 21, 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 21 IT infrastructure outsourcing 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 |  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 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  伊藤忠テクノソリューションズ(株)ctc-g.co.jpHQ: 港区, JapanReported employees: 5,001-10,000 | 港区, Japan | 5,001-10,000 | Exact match | 455 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 3 |  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 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | 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. | |||||
| 5 |  Persol Process & Technology Co., LTDpersol-pt.co.jpHQ: Koto-ku, JapanReported employees: 1,001-5,000 | Koto-ku, Japan | 1,001-5,000 | Exact match | 106 contacts → |
“PERSOLITIT As part of PERSOL group, PERSOL PROCESS & TECHNOLOGY (PP & T) is an IT outsourcing & System Development company which revolutionize the business process of our…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | トランス・コスモス(株)trans-cosmos.co.jp HQ: 渋谷区, JapanReported employees: 51-200 | 渋谷区, Japan | 51-200 | Exact match | 65 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 7 | コムテック(株)ct-net.co.jp HQ: 港区, JapanReported employees: 51-200 | 港区, Japan | 51-200 | Exact match | 27 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 8 |  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 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Joho Technologyjoho.comHQ: Minato-ku, JapanReported employees: 11-50 | Minato-ku, Japan | 11-50 | Exact match | 14 contacts → |
“Joho Technology Inc: Complete IT support for small and medium sized businesses Managing your firm's ever-changing technology needs starts with selecting the right partner.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | (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. | |||||
| 11 | 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. | |||||
| 12 |  RINGIringi.aiHQ: Shibuya, JapanReported employees: 1-10 | Shibuya, Japan | 1-10 | Exact match | 3 contacts → |
“IT outsourcing Business connect E-commerce” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  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 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | (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. | |||||
| 15 |  Hanamaru K.Khanamaru.ioHQ: Daimuracho 186, JapanReported employees: 1-10 | Daimuracho 186, Japan | 1-10 | Exact match | 2 contacts → |
“With a wide range of experience in the Japanese IT industry we provide consulting services, software development, infrastructure management and security solutions for connected…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | エヌ・ティ・ティ・ビズリンク(株)nttbiz.com HQ: 文京区, JapanReported employees: 1-10 | 文京区, Japan | 1-10 | Exact match | 2 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 17 |  Pixsol INCpixsol.co.jpHQ: Tokyo, JapanReported employees: 11-50 | Tokyo, Japan | 11-50 | Exact match | 1 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 18 | 鈴与シンワ物流(株)shinwart.co.jp HQ: 港区, JapanReported employees: 11-50 | 港区, Japan | 11-50 | Exact match | 1 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 19 | Insaneworks,llcinsaneworks.co.jp HQ: Tokyo, JapanReported employees: 1-10 | Tokyo, Japan | 1-10 | Exact match | 1 contacts → |
“Works we can do are below.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Infopocketinfopocket.biz HQ: Tokyo, JapanReported employees: 1-10 | Tokyo, Japan | 1-10 | Exact match | 1 contacts → |
“InfoPocket provides the very best in IT Infrastructure Projects and Professional Web Site Design and Development services to the greater Tokyo area and throughout Japan.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Qadiff LLCqadiff.comHQ: Shibuya-ku, JapanReported employees: 1-10 | Shibuya-ku, Japan | 1-10 | Exact match | 1 contacts → |
No recorded description excerpt is available for this public record. | |||||
Showing 21 of 115 company matches
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IT infrastructure outsourcing companies: dataset insights
September 21, 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
112 records in the displayed employee bands.
3 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 115 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 21, 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 outsourcing 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 outsourcing companies did RevenueBase find based in Japan?
The saved snapshot records 115 matching company records, 2,604 tracked contacts and 375 verified emails. The public preview displays 21 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 21, 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 outsourcing companies by geography
- IT infrastructure outsourcing companies based in Brisbane, Australia
- IT infrastructure outsourcing companies based in Melbourne, Australia
- IT infrastructure outsourcing companies based in Sydney, Australia
- IT infrastructure outsourcing companies based in Barueri, Brazil
- IT infrastructure outsourcing companies based in Belo Horizonte, Brazil
- IT infrastructure outsourcing companies based in Campinas, Brazil
- IT infrastructure outsourcing companies based in Curitiba, Brazil
- IT infrastructure outsourcing companies based in Porto Alegre, Brazil
- IT infrastructure outsourcing companies based in Recife, Brazil
- IT infrastructure outsourcing companies based in Rio De Janeiro, Brazil
- IT infrastructure outsourcing companies based in Salvador, Brazil
- IT infrastructure outsourcing companies based in Sao Paulo, Brazil
Cite this list
RevenueBase Data Team. Top 21 IT infrastructure outsourcing companies based in Japan. Snapshot: September 21, 2026. https://revenuebase.ai/companies/it-infrastructure-outsourcing-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 outsourcing companies based in Brisbane, Australia
- IT infrastructure outsourcing companies based in Melbourne, Australia
- IT infrastructure outsourcing companies based in Sydney, Australia
- IT infrastructure outsourcing companies based in Barueri, Brazil
- IT infrastructure outsourcing companies based in Belo Horizonte, Brazil
- IT infrastructure outsourcing companies based in Campinas, Brazil
Company intelligence · public preview
Top 21 IT infrastructure outsourcing companies based in Japan
RevenueBase records 115 matching company records for IT infrastructure outsourcing companies based in Japan, with 2,604 tracked contacts and 375 verified work emails.
This public preview shows 21 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 21, 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 21 IT infrastructure outsourcing 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 | 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 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | 伊藤忠テクノソリューションズ(株)ctc-g.co.jp HQ: 港区, JapanReported employees: 5,001-10,000 | 港区, Japan | 5,001-10,000 | Exact match | 455 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 3 | 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 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | 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. | |||||
| 5 | Persol Process & Technology Co., LTDpersol-pt.co.jp HQ: Koto-ku, JapanReported employees: 1,001-5,000 | Koto-ku, Japan | 1,001-5,000 | Exact match | 106 contacts → |
“PERSOLITIT As part of PERSOL group, PERSOL PROCESS & TECHNOLOGY (PP & T) is an IT outsourcing & System Development company which revolutionize the business process of our…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | トランス・コスモス(株)trans-cosmos.co.jp HQ: 渋谷区, JapanReported employees: 51-200 | 渋谷区, Japan | 51-200 | Exact match | 65 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 7 | コムテック(株)ct-net.co.jp HQ: 港区, JapanReported employees: 51-200 | 港区, Japan | 51-200 | Exact match | 27 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 8 | 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 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Joho Technologyjoho.com HQ: Minato-ku, JapanReported employees: 11-50 | Minato-ku, Japan | 11-50 | Exact match | 14 contacts → |
“Joho Technology Inc: Complete IT support for small and medium sized businesses Managing your firm's ever-changing technology needs starts with selecting the right partner.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | (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. | |||||
| 11 | 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. | |||||
| 12 | RINGIringi.ai HQ: Shibuya, JapanReported employees: 1-10 | Shibuya, Japan | 1-10 | Exact match | 3 contacts → |
“IT outsourcing Business connect E-commerce” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | 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 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | (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. | |||||
| 15 | Hanamaru K.Khanamaru.io HQ: Daimuracho 186, JapanReported employees: 1-10 | Daimuracho 186, Japan | 1-10 | Exact match | 2 contacts → |
“With a wide range of experience in the Japanese IT industry we provide consulting services, software development, infrastructure management and security solutions for connected…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | エヌ・ティ・ティ・ビズリンク(株)nttbiz.com HQ: 文京区, JapanReported employees: 1-10 | 文京区, Japan | 1-10 | Exact match | 2 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 17 | Pixsol INCpixsol.co.jp HQ: Tokyo, JapanReported employees: 11-50 | Tokyo, Japan | 11-50 | Exact match | 1 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 18 | 鈴与シンワ物流(株)shinwart.co.jp HQ: 港区, JapanReported employees: 11-50 | 港区, Japan | 11-50 | Exact match | 1 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 19 | Insaneworks,llcinsaneworks.co.jp HQ: Tokyo, JapanReported employees: 1-10 | Tokyo, Japan | 1-10 | Exact match | 1 contacts → |
“Works we can do are below.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Infopocketinfopocket.biz HQ: Tokyo, JapanReported employees: 1-10 | Tokyo, Japan | 1-10 | Exact match | 1 contacts → |
“InfoPocket provides the very best in IT Infrastructure Projects and Professional Web Site Design and Development services to the greater Tokyo area and throughout Japan.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Qadiff LLCqadiff.com HQ: Shibuya-ku, JapanReported employees: 1-10 | Shibuya-ku, Japan | 1-10 | Exact match | 1 contacts → |
No recorded description excerpt is available for this public record. | |||||
Showing 21 of 115 company matches
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IT infrastructure outsourcing companies: dataset insights
September 21, 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
112 records in the displayed employee bands.
3 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 115 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 21, 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 outsourcing 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 outsourcing companies did RevenueBase find based in Japan?
The saved snapshot records 115 matching company records, 2,604 tracked contacts and 375 verified emails. The public preview displays 21 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 21, 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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Cite this list
RevenueBase Data Team. Top 21 IT infrastructure outsourcing companies based in Japan. Snapshot: September 21, 2026. https://revenuebase.ai/companies/it-infrastructure-outsourcing-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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