Block from U+0500 to U+052F. This block was introduced in Unicode version 3.2 (2002). It contains 48 codepoints.
The Wikipedia provides the following information on block Cyrillic Supplement:
Cyrillic Supplement is a Unicode block containing Cyrillic letters for writing several minority languages, including Abkhaz, Kurdish, Komi, Mordvin, Aleut, Azerbaijani, and Jakovlev's Chuvash orthography.