KOI-8

This standard has become the base for the later Internet standards such as KOI8-RU.

Unicode is preferred to KOI-8 and its variants or other Cyrillic encodings in modern applications, especially on the Internet, making UTF-8 the dominant encoding for web pages. (For further discussion of Unicode's complete coverage, of 436 Cyrillic letters/code points, including for Old Cyrillic, and how single-byte character encodings, such as Windows-1251 and KOI8 variants, cannot provide this, see Cyrillic script in Unicode.)

Character set

The following table shows the KOI-8 encoding. Each character is shown with its equivalent Unicode code point.