字母“ O”也用于创建一对区域指示符符号，它们对诸如🇴🇲阿曼标志的OM代码进行编码，这些代码在支持的平台上显示为表情符号标志。
| Category | ❗ Format |
| Subgroup | Letter |
| Codepoints | 1F1F4 |
| HTML hex | 🇴 |
| HTML dec | 🇴 |
| URL escape code | %F0%9F%87%B4 |
| Punycode | xn--s77h |
| Bytes (UTF-8) | f0 9f 87 b4 |
| JavaScript, JSON, Java | \uD83C\uDDF4 |
| C, C++, Python | \U0001f1f4 |
| CSS | \01F1F4 |
| PHP, Ruby | \u{1F1F4} |
| Perl | \x{1F1F4} |
