The Ahom block spans U+11700–U+1174F, 80 codepoints in Plane 1 (Supplementary Multilingual Plane). 65 are assigned in Unicode 16.0; the other 15 are reserved for future characters.
All of its characters belong to the Ahom script.
By general category: 34 other letters (Lo), 11 non-spacing marks (Mn), 10 decimal digits (Nd), 4 spacing marks (Mc), 3 other punctuation (Po), plus smaller groups.
The first 57 arrived in Unicode 8.0 (2015); later additions came in 11.0 (1), 14.0 (7).
Because it lies outside the BMP, every character here takes four bytes in UTF-8 and a surrogate pair in UTF-16.