Block from U+AB00 to U+AB2F. This block was introduced in Unicode version 6.0 (2010). It contains 32 codepoints.
The Wikipedia provides the following information on block Ethiopic Extended-A:
Ethiopic Extended-A is a Unicode block containing Ge'ez characters for the Gamo-Gofa-Dawro, Basketo, and Gumuz languages of Ethiopia.