| Name | DOUBLE QUESTION MARK |
| Unicode Version | 3.2 |
| Block（ブロック） | General Punctuation（一般句読点） |
| Plane（面） | Basic Multilingual Plane（基本多言語面） |
| Script | |
| Category | |
| Bidirectional Class | |
| Combining Class | |
| Character is Mirrored | |
| HTML Entity | ⁇ ⁇ |
| UTF-8 Encoding | ⁇ e28187 |
| UTF-16 Encoding | ⁇ 2047 |
| UTF-32 Encoding | ⁇ 00002047 |