Symbol representing this block in the Unidings font

CJK Compatibility Ideographs Supplement

Block from U+2F800 to U+2FA1F. This block was introduced in Unicode version 3.1 (2001). It contains 542 codepoints.

The Wikipedia provides the following information on block CJK Compatibility Ideographs Supplement:

CJK Compatibility Ideographs Supplement is a Unicode block containing Han characters used only for roundtrip compatibility mapping with planes 3, 4, 5, 6, 7, and 15 of CNS 11643-1992.

Chart at Unicode.org (PDF)
Block at Decode Unicode