# Common

 - [GET /countries](https://kollus-api.redocly.app/en/products/vod/openapi/%EA%B3%B5%ED%86%B5/getcountries.md): Retrieves the full list of countries and country codes supported by the system.
 - [GET /languages](https://kollus-api.redocly.app/en/products/vod/openapi/%EA%B3%B5%ED%86%B5/getlanguages.md): Retrieves the full list of languages available in the system. You can separately filter for subtitle-supported languages only.
 - [GET /timezones](https://kollus-api.redocly.app/en/products/vod/openapi/%EA%B3%B5%ED%86%B5/gettimezones.md): Retrieves the list of standard timezones that can be applied to content management and service settings.