| Nederlands | nld-000 |
| geheimtaal | |
| Lingwa de Planeta | art-287 | kod |
| Sambahsa-mundialect | art-288 | code |
| Deutsch | deu-000 | Chiffreschrift |
| Deutsch | deu-000 | Geheimschrift |
| English | eng-000 | code |
| English | eng-000 | secret language |
| Esperanto | epo-000 | kodo |
| Esperanto | epo-000 | ĉifro |
| Limburgs | lim-000 | kriemerwaals |
| Limburgs | lim-000 | kriemerwelsj |
| Nederlands | nld-000 | Bargoens |
| Nederlands | nld-000 | code |
| Nederlands | nld-000 | koeterwaals |
| Novial | nov-000 | kode |
| русский | rus-000 | код |