The Arabic Supplement block spans U+0750–U+077F, 48 codepoints in Plane 0 (Basic Multilingual Plane). Every one of them is assigned in Unicode 16.0.
All of its characters belong to the Arabic script.
By general category: 48 other letters (Lo).
The first 30 arrived in Unicode 4.1 (2005); later additions came in 5.1 (18).
Most letters here are written right to left. See bidirectional text.