| Name | COLON EQUALS COLON EQUAL |
| Unicode Version | 1.1 |
| Block（ブロック） | Mathematical Operators（数学記号） |
| 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 | ≔ e28994 |
| UTF-16 Encoding | ≔ 2254 |
| UTF-32 Encoding | ≔ 00002254 |