The Malayalam block spans U+0D00–U+0D7F, 128 codepoints in Plane 0 (Basic Multilingual Plane). 118 are assigned in Unicode 16.0; the other 10 are reserved for future characters.
All of its characters belong to the Malayalam script.
By general category: 67 other letters (Lo), 16 other numbers (No), 12 spacing marks (Mc), 11 non-spacing marks (Mn), 10 decimal digits (Nd), plus smaller groups.
The first 78 arrived in Unicode 1.1 (1993); later additions came in 5.1 (17), 6.0 (3), 7.0 (1), 8.0 (1), 9.0 (14), and 2 later versions.