🚨 Time for #fridaygeotrivia 🚨

Name countries (or parts of countries) that use the postal system of other countries.

An example: Liechtenstein 🇱🇮 uses the Swiss 🇨🇭 postal system.

As always you need the emoji flag and #fridaygeotrivia hashtag for full points.

Rules/Prizes/etc on the blog: https://blog.opencagedata.com/post/geotrivia-july-2023