ISO 639-1
ie Interlingue; Occidental
· filed 2026-07-18 · click a code to copy
Interlingue; Occidental carries the ISO 639-1 two-letter code ie.
In practice this code appears in HTML (<html lang="ie">), HTTP Accept-Language headers, locale identifiers such as ie-XX, subtitle tracks and translation files — anywhere software needs to say “this content is in Interlingue”.