---
id: "jp_ndl_authority_id"
kind: "datatype"
status: "draft"
is_pii: false
categories: ["publishing"]
country: ["JP"]
langs: ["common"]
quality: 90
url: "https://registry.apicrafter.io/datatype/jp_ndl_authority_id"
---

# NDL Authority ID (National Diet Library of Japan) (`jp_ndl_authority_id`)

> **Draft.** Draft records have not been reviewed yet and may be incomplete or wrong; do not treat them as authoritative for legal or compliance decisions.

Identifier of an authority record (name, subject heading) of the National Diet Library of Japan, published in Web NDL Authorities at id.ndl.go.jp/auth/ndlna/<id>. Most IDs have eight or nine digits. The regexp is the Wikidata format of property P349, which also accepts the prefixes s and a1.

- Personal data (PII): no
- Categories: Publishing and print (publishing)
- Countries: Japan (JP)
- Languages: Common to most languages (common)
- Classification: identifier

## Detection

Regular expression (Python `re`):

```
^(?:a1|s)?\d{8,9}$
```

## Examples

- `00564222` — iridium
- `001360828` — Nineteen Eighty-Four
- `0056422` (invalid example) — Seven digits

## Mappings

- wikidata: `P349`

## Translations

- ru: Идентификатор авторитетной записи Национальной парламентской библиотеки Японии: Номер авторитетной записи (имя, предметная рубрика) NDL из восьми или девяти цифр.
- ja: 国立国会図書館典拠ID

## Sources

- doc: <https://id.ndl.go.jp/auth/ndla>
- wikidata: <https://www.wikidata.org/wiki/Property:P349>

## Quality

Score 90/100. Missing: detector coverage.

JSON: <https://registry.apicrafter.io/api/v1/datatypes/jp_ndl_authority_id.json> · Edit: <https://github.com/apicrafter/metacrafter-registry/edit/main/data/datatypes/JP/publishing/jp_ndl_authority_id.yaml>