Meaning
This flag stands for Ceuta and Melilla, two autonomous cities of Spain on the northern coast of Africa. The emoji covers both cities together under one regional code.
It is mostly used by locals, travellers crossing the Strait of Gibraltar and geography fans; for Spain in general, the Spain flag is the usual choice. Pair it with ⛴️ or 🗺️. “Ferry across the strait, see you in Ceuta 🇪🇦⛴️”