---
language:
  - ja
  - en
license: other
license_name: regbase-sample-license-note
task_categories:
  - tabular-question-answering
tags:
  - japan
  - corporate-registry
  - company-data
  - open-data
  - b2b
  - houjin-bangou
size_categories:
  - n<1K
pretty_name: "RegBase — Japan Corporate Registry Daily Diff (Free Sample, 2026-11-06)"
---

# RegBase — Japan Corporate Registry Daily Diff · Free Sample (2026-11-06)

Japan's National Tax Agency (国税庁) publishes the national corporate registry as
open data: every registered company's corporate number (法人番号), name,
entity type and address. What it does not publish in a usable shape is *what
changed today*. **RegBase** cuts the registry's daily diff — the registrations
that were created, changed, or removed on a single day — into a clean,
documented, verifiable package.

This dataset is the **free sample** of that work: the first 100 records of the
2026-11-06 registry diff, plus the full day's census summary.

## What happened on 2026-11-06

The complete diff for the 2026-11-06 update contained **2,617 records**:

| Change class | Count |
|---|---|
| New registrations | 1,404 |
| Changed registrations | 895 |
| Closed registrations | 298 |
| Revived registrations | 20 |
| **Total** | **2,617** |

New registrations by prefecture (top 3): Tokyo 370, Osaka 128, Kanagawa 95.
By municipality (top 3): Minato City, Tokyo 65; Chuo City, Tokyo 40;
Chiyoda City, Tokyo 32. Cross-checked against a 3,808-company listed-company
master, 6 of the day's records belonged to listed companies — all of them
"changed". Full top-10 tables and the complete census are in `data/`.

## Files

| File | Contents |
|---|---|
| `data/sample_diff_20261106.csv` | First 100 records of the 2026-11-06 diff. UTF-8, **no header row**, 30 columns (schema below). Byte-identical to the first 100 records of the full product file. |
| `data/census_summary.json` | Full census of the day's 2,617 records: counts by change class, process code, prefecture, entity type, and top municipalities for new registrations. |
| `data/change_class_split.csv` | Record counts by change class (new / changed / closed / revival / other). |
| `data/top_prefectures_new.csv` | Top 10 prefectures by new registrations. |
| `data/top_municipalities_new.csv` | Top 10 municipalities by new registrations. |

## Schema (30 columns, in order)

1. `sequence_number` — row sequence within the source publication
2. `corporate_number` — 13-digit corporate number (法人番号); import as text to keep leading zeros
3. `process_code` — registry process code
4. `correction_code` — correction flag
5. `update_date` — date the change was published
6. `change_date` — date of the underlying change
7. `name` — registered name (Japanese)
8. `name_image_id` — name image reference
9. `entity_type` — entity type code (e.g. 301 = stock company)
10. `prefecture` — prefecture (Japanese)
11. `city` — city / ward / town / village (Japanese)
12. `street_address` — street address (Japanese)
13. `address_image_id` — address image reference
14. `prefecture_code` — 2-digit prefecture code
15. `city_code` — municipality code
16. `postal_code` — postal code
17. `address_outside_japan` — address outside Japan, if any
18. `reserved_empty` — reserved (empty)
19. `closing_date` — registry closing date, if closed
20. `closing_reason` — closing reason code, if closed
21. `succeeded_corporate_number` — successor corporate number, if any
22. `change_cause` — cause of change
23. `assignment_date` — date the corporate number was assigned
24. `latest_history_flag` — latest-history flag
25. `name_en` — registered name (English), where published
26. `prefecture_en` — prefecture (English)
27. `city_en` — city (English)
28. `address_outside_japan_en` — address outside Japan (English)
29. `name_kana` — registered name (kana)
30. `non_display_flag` — non-display flag

## What this data is good for

- Building or refreshing a Japan B2B sales list
- Catching newly incorporated companies on the day they register
- Market and competitor research on Japanese companies
- A first-pass check of a counterparty's registered details

## Limitations — please read

- **One day only.** This sample covers the 2026-11-06 update. A single day
  shows what happened that day; it cannot show trends.
- The counts are the records that **changed that day**, not the total number
  of companies in Japan.
- "Closed" means the registry record was closed that day. It is **not**
  a count of all business closures in Japan.
- The registry has **no industry/sector column**. Records cannot be filtered
  by industry.
- Record accuracy follows the source publication (National Tax Agency).

## The full products

This sample is the top of the RegBase funnel. The complete, verifiable
packages — each shipped with a signed file list (a manifest carrying a
digital stamp, Ed25519; if any file changes, the stamp stops matching) so
you can confirm the files are byte-for-byte what RegBase produced:

- **Registry Diff Snapshot** — one full day of registry changes (CSV +
  summary + signed manifest). ¥2,980.
  → Product page: BOOTH (¥2,980) — https://regbase.booth.pm/items/9113399 · Coconala (¥3,000) — https://coconala.com/services/4493403
- **Diff Feed** — the same diff, delivered on a continuing basis.
  → Details: https://apify.com/regbase/jp-diff-feed
- **Signed verification (regbase-record/1)** — per-record signed verification
  built on the same manifest format.
  → Details: https://regbase.local-connect-design.trade/verify

A free sample of the snapshot's summary (counts and the column reference)
is also available before purchase — see the product page above.

## License

The underlying registry data is public data published by Japan's National
Tax Agency (法人番号公表サイト) as open data; its use follows the source's
published terms. RegBase's own work in this dataset — the record selection,
the census summaries, and this documentation — is the compilation layer
described above; please credit RegBase and the National Tax Agency when
reusing the summary files. The sample records themselves remain source
data: consult the National Tax Agency's terms for redistribution of
registry records.

## Source

- National Tax Agency, Corporate Number Publication Site (法人番号公表サイト),
  daily diff for the 2026-11-06 update.
- Listed-company cross-check: the code list from EDINET, Japan's official
  online disclosure system for listed companies (3,808 listed filers),
  as of 2026-11-07.
- Zenodo deposit of this sample (archival copy with DOI):
  https://doi.org/10.5281/zenodo.24046548