The Hangul Jamo Extended-A block spans U+A960–U+A97F, 32 codepoints in Plane 0 (Basic Multilingual Plane). 29 are assigned in Unicode 16.0; the other 3 are reserved for future characters.
All of its characters belong to the Hangul script.
By general category: 29 other letters (Lo).
The first 29 arrived in Unicode 5.2 (2009).
29 characters are East Asian Wide or Fullwidth and take two columns in terminals.