MeSIM’s eSIM offerings cover all of the Balkans, including Albania, Bosnia and Herzegovina, Bulgaria, Croatia, Montenegro, Serbia, North Macedonia and Kosovo. The Global (120+ areas) /Day, Global139 and Global (120+ areas) /Day plans list all eight nations in their coverage; the Balkans (5+ areas) /Day and Europe 5‑day unlimited eSIM plans cover Albania, Bulgaria, Croatia, Montenegro, North Macedonia and Serbia but leave out Bosnia and Herzegovina and Kosovo, while the Europe‑41 countries / plan includes Bosnia and Herzegovina but does not list Kosovo. All of these plans also extend coverage to various other regions outside the Balkans, though that is separate from the Balkan coverage.