◼
HEX: 0x25fc
DEC: 9724
Unicode index data:
SQUARE, BLACK MEDIUM
Unicode emoji data:
25FB..25FE: Emoji # E0.6 [4] (◻️..◾) white medium square..black medium-small square
25FB..25FE: Extended_Pictographic# E0.6 [4] (◻️..◾) white medium square..black medium-small square