The Ethiopic Extended block spans U+2D80–U+2DDF, 96 codepoints in Plane 0 (Basic Multilingual Plane). 79 are assigned in Unicode 16.0; the other 17 are reserved for future characters.
All of its characters belong to the Ethiopic script.
By general category: 79 other letters (Lo).
The first 79 arrived in Unicode 4.1 (2005).