The Ethiopic Supplement block spans U+1380–U+139F, 32 codepoints in Plane 0 (Basic Multilingual Plane). 26 are assigned in Unicode 16.0; the other 6 are reserved for future characters.
All of its characters belong to the Ethiopic script.
By general category: 16 other letters (Lo), 10 other symbols (So).
The first 26 arrived in Unicode 4.1 (2005).