The Myanmar Extended-A block spans U+AA60–U+AA7F, 32 codepoints in Plane 0 (Basic Multilingual Plane). Every one of them is assigned in Unicode 16.0.
All of its characters belong to the Myanmar script.
By general category: 25 other letters (Lo), 3 other symbols (So), 2 spacing marks (Mc), 1 modifier letters (Lm), 1 non-spacing marks (Mn).
The first 28 arrived in Unicode 5.2 (2009); later additions came in 7.0 (4).