List of Character Sets with Character “≡” (U+2261)

Name
Index₁₀
Index₁₆
IEC_P27-1
161
0xA1
IBM862
240
0xF0
IBM-Symbols
231
0xE7
Windows-31J
33247
0x81DF
Windows-31J
34705
0x8791
IBM437
240
0xF0
IBM860
240
0xF0
IBM861
240
0xF0
IBM863
240
0xF0
IBM865
240
0xF0

References