Japan is home to more than four million companies, each assigned a 13-digit Corporate Number that the National Tax Agency publishes as open data — a deep, overwhelmingly Japanese-language SME base sitting behind the country's famous manufacturers.
Industries. Manufacturing, electronics, automotive supply, and a deep B2B services and wholesale layer lead.
Regions. Tokyo, Osaka and Nagoya (the Chukyo industrial belt) concentrate the most activity.
The legal source of truth for Japan is NTA Corporate Number. It records every legally trading company — identifier, status, address and often officers and filings — which is why it is the most complete and current starting point for prospecting. See the full register directory.
Databases like Apollo and ZoomInfo do not know companies — they assemble records from contributory networks, purchased lists and web scraping, all skewed toward firms with a strong English-language online footprint. A small Nagoya parts supplier has a Corporate Number and a Japanese-language site, but is almost never in a US-built, English-first warehouse.
| Segment | Share of firms | Online-footprint coverage |
|---|---|---|
| Large + mid | ~1% | Good — usually covered |
| Small | ~4% | Variable — partial |
| Micro (SME) | ~95% | Weak — under-represented |
Japanese companies — overwhelmingly Japanese-language SMEs — are likely under-represented in English-first online-footprint databases. A structure-based estimate, not a figure measured from any database.
Two public systems anchor Japanese company data. The National Tax Agency issues a 13-digit Corporate Number (法人番号, hōjin bangō) to every legal entity and publishes the trade name, registered address, entity type and status free of charge at houjin-bangou.nta.go.jp; the system holds over five million records. This sits alongside the older commercial registry kept by the Legal Affairs Bureau (法務局), which records the detailed company ledger and a separate registration number. Together they make Japan one of the more completely registered markets in Asia.
Yet the data is almost entirely in Japanese, with company names written in kanji and addresses in the Japanese postal format. Manufacturing, automotive supply, electronics and a deep wholesale and B2B-services layer dominate, concentrated around Tokyo, Osaka and the Nagoya-centred Chukyo belt — and roughly 99.7% of all firms are SMEs, many family-run with minimal English-facing web presence. Aggregators like Apollo and ZoomInfo are built around Latin-script, English-first sources, so a small Nagoya parts supplier with a Corporate Number and a Japanese-only site rarely surfaces in those warehouses.
This section streams from AtlasForgeX's own data collection — verified data sources, ingestion volume and detected buying-state signals for Japan, updated automatically. Company-level activity (new registrations, GOLDMINE candidates, signal and industry distribution) appears as the dataset grows.
AtlasForgeX tracks 54 public buying signals and collects across registries, the open web, hiring and news to surface Japan companies entering a buying window. How AtlasForgeX finds hidden companies →
Counts & structure: Japan National Tax Agency Corporate Number (open data) and METI/SME Agency. Figures rounded; they vary by year and definition.
Coverage estimate: AtlasForgeX's analysis of the publicly described stored-database collection model against Japan's enterprise size distribution. The headline figure is a structure-based estimate, not measured from any database.
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