5.10. Max UUID

5.10. Max UUID

The Max UUID is a special form of UUID that is specified to have all 128 bits set to 1. This UUID can be thought of as the inverse of the Nil UUID defined in Section 5.9.

FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF

Figure 14: Max UUID Format

A Max UUID value can be used as a sentinel value in situations where a 128-bit UUID is required, but a concept such as "end of UUID list" needs to be expressed and is reserved for such use as needed for implementation-specific situations.

Note that the Max UUID value falls within the range of the "yet-to-be defined" future UUID variant as per the last row of Table 1 rather than the variant defined by this document.