Full BCP 47 language subtag data from the official IANA repository, in JSON format with multiple indices.
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Get this data programmatically — free, no authentication.
curl https://depscope.dev/api/check/npm/language-subtag-registryFirst published · 2013-09-29T17:24:35.039Z
Last updated · 2025-12-09T14:07:31.980Z