21902370F

21902370F is a nine-character hexadecimal code that functions as an identifier in various digital systems. Without an accompanying metadata source, its meaning is not fixed and can vary by context. In practice, such codes are used to label assets, records, or software components in a compact, machine-readable form.

Format and characteristics: The string uses only the hexadecimal digits 0–9 and A–F and is typically displayed with uppercase letters. As a nine-digit hex value, it represents 36 bits of information, which is sufficient for large but not astronomical key spaces and is common in inventory and build-tracking schemes.

Common applications include primary keys in databases, build or release identifiers in software repositories, asset tags in hardware inventories, or transaction or log identifiers in systems that require short, opaque references. Its fixed length helps with indexing, storage efficiency, and straightforward lexical sorting in many software tools.

Limitations and considerations: A nine-hex-digit code is not globally unique by itself. Different systems may generate identical codes if the namespace is not coordinated. Therefore 21902370F should be interpreted within its assigned domain, accompanied by schema context or other identifiers to guarantee uniqueness.

Etymology and relation to other identifiers: The code is a hexadecimal string, akin to a compact hash fragment or a short GUID subset. It is distinct from longer globally unique identifiers and from human-readable names, which carry semantic meaning but less convenience for machine processing.

See also: hexadecimal, hash, GUID, asset tag, build identifier.