The My Number of Japan. This page is generated from the registry metadata of the library.
| Property | Value |
|---|---|
| Country code | JPN, JP |
| ID type | My Number |
| Official name | マイナンバー (My Number) |
| Also known as | National ID Number; My Number; マイナンバー |
| Display format | XXXXXXXXXXXX |
| Input masks | ############ |
| Length | 12 |
| Example | 765895492872 |
| Checksum | yes |
| Checksum algorithm | Weighted sum mod 11 (weights 6,5,4,3,2,7,6,5,4,3,2; remainder <= 1 → 0, else 11 - remainder) |
| Parsable | no |
The root entry registers every country:
import { validateNationalId } from 'idnumbers';
validateNationalId('JPN', '765895492872').isValid; // true
To bundle only this country, import its definition from idnumbers/countries/jpn and pass it to register():
import { register, validateNationalId } from 'idnumbers/core';
import { country } from 'idnumbers/countries/jpn';
register(country);
validateNationalId('JPN', '765895492872').isValid; // true