| English | eng-000 |
| Asturian-Leonese | |
| ISO 639-3 | art-001 | ast |
| ISO 639-3 | art-001 | ext |
| ISO 639-3 | art-001 | mwl |
| Glottolog Languoid Names | art-326 | Asturian |
| Glottolog Languoid Names | art-326 | Extremaduran |
| Glottolog Languoid Names | art-326 | Mirandese |
| Glottocode | art-327 | astu1245 |
| Glottocode | art-327 | extr1243 |
| Glottocode | art-327 | mira1251 |
| Glottolog Primary Key | art-328 | 38778 |
| Glottolog Primary Key | art-328 | 38806 |
| Glottolog Primary Key | art-328 | 38810 |
| UNESCO Atlas of the World’s Languages in Danger ID | art-329 | 332 |
| français | fra-000 | asturien-léonais |
| español | spa-000 | astur-leonés |