| Name | REPLACEMENT CHARACTER |
| Unicode Version | 1.1 |
| Block（ブロック） | Specials（特殊用途文字） |
| 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 | � efbfbd |
| UTF-16 Encoding | � fffd |
| UTF-32 Encoding | � 0000fffd |