The Ethiopic Extended-A block spans U+AB00–U+AB2F, 48 codepoints in Plane 0 (Basic Multilingual Plane). 32 are assigned in Unicode 16.0; the other 16 are reserved for future characters.
All of its characters belong to the Ethiopic script.
By general category: 32 other letters (Lo).
The first 32 arrived in Unicode 6.0 (2010).