The Shavian block spans U+10450–U+1047F, 48 codepoints in Plane 1 (Supplementary Multilingual Plane). Every one of them is assigned in Unicode 16.0.
All of its characters belong to the Shavian script.
By general category: 48 other letters (Lo).
The first 48 arrived in Unicode 4.0 (2003).
Because it lies outside the BMP, every character here takes four bytes in UTF-8 and a surrogate pair in UTF-16.