Block from U+2600 to U+26FF. This block was introduced in Unicode version 1.1 (1993). It contains 256 codepoints.
The Wikipedia provides the following information on block Miscellaneous Symbols:
Miscellaneous Symbols is a Unicode block (U+2600–U+26FF) containing glyphs representing concepts from a variety of categories, astrological, astronomical, chess, dice, musical notation, political symbols, recycling, religious symbols, trigrams, warning signs, and weather, among others.