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Universally Unique Identifier

128-bit number used to identify information in computer systems
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Universally Unique Identifier
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Universally Unique Identifier

Summary

Universally Unique Identifier ranks in the top 0.59% of general entities by monthly Wikipedia readership (2,102 views/month, #460 of 77,819).[1]

Key Facts

  • Universally Unique Identifier's image is recorded as Example UUIDs.svg[2].
  • Universally Unique Identifier's subclass of is recorded as unique identifier[3].
  • Universally Unique Identifier's Commons category is recorded as Universally unique identifiers[4].
  • Universally Unique Identifier's said to be the same as is recorded as globally unique identifier[5].
  • Universally Unique Identifier's Freebase ID is recorded as /m/018057[6].
  • Universally Unique Identifier's described by source is recorded as RFC 4122: An Universally Unique IDentifier (UUID) URN Namespace[7].
  • Universally Unique Identifier's described by source is recorded as RFC 9562: Universally Unique IDentifiers (UUIDs)[8].
  • Universally Unique Identifier's Stack Exchange tag is recorded as https://stackoverflow.com/tags/uuid[9].
  • Universally Unique Identifier's format as a regular expression is recorded as [0-9A-Fa-f]{8}-[0-9A-Fa-f]{4}-[0-9A-Fa-f]{4}-[0-9A-Fa-f]{4}-[0-9A-Fa-f]{12}[10].
  • Universally Unique Identifier's format as a regular expression is recorded as [0-9a-f]{8}-([0-9a-f]{4}-){3}[0-9a-f]{12}[11].
  • Universally Unique Identifier's format as a regular expression is recorded as [0-9A-F]{8}-[0-9A-F]{4}-[0-9A-F]{4}-[0-9A-F]{4}-[0-9A-F]{12}[12].
  • Universally Unique Identifier's format as a regular expression is recorded as [0-9a-f]{32}[13].
  • Universally Unique Identifier's short name is recorded as {'lang': 'mul', 'text': 'UUID'}[14].
  • Universally Unique Identifier's different from is recorded as identifier[15].
  • Universally Unique Identifier's different from is recorded as unique identifier[16].
  • Universally Unique Identifier's different from is recorded as globally unique identifier[17].
  • Universally Unique Identifier's different from is recorded as persistent identifier[18].
  • Universally Unique Identifier's different from is recorded as non-persistent identifier[19].
  • Universally Unique Identifier's length is recorded as {'unit': 'Q8805', 'amount': '+128'}[20].
  • Universally Unique Identifier's File Format Wiki page ID is recorded as UUID[21].
  • Universally Unique Identifier's Quora topic ID is recorded as UUID[22].
  • Universally Unique Identifier's ITU/ISO/IEC object ID is recorded as 2.25[23].
  • Universally Unique Identifier's Uniform Resource Identifier Scheme is recorded as uuid[24].
  • Universally Unique Identifier's P6009 is recorded as 1316[25].
  • Universally Unique Identifier's Microsoft Academic ID is recorded as 2777189988[26].

Why It Matters

Universally Unique Identifier ranks in the top 0.59% of general entities by monthly Wikipedia readership (2,102 views/month, #460 of 77,819).[1] It has Wikipedia articles in 19 language editions, a strong signal of global cultural recognition.[27] It is known by 32 alternative names across languages and contexts.[28]

Related Entities

GUID Partition Table Persistent Page Identifiers

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [2] ↑ . wikidata.org.
  2. [3] ↑ . wikidata.org.
  3. [4] ↑ . wikidata.org.
  4. [5] ↑ . wikidata.org.
  5. [6] ↑ . Freebase Data Dumps. wikidata.org.
  6. [7] ↑ . wikidata.org.
  7. [8] ↑ . wikidata.org.
  8. [9] ↑ . wikidata.org.
  9. [10] ↑ . wikidata.org.
  10. [11] ↑ . wikidata.org.
  11. [12] ↑ . wikidata.org.
  12. [13] ↑ . wikidata.org.
  13. [14] ↑ . wikidata.org.
  14. [15] ↑ . wikidata.org.
  15. [16] ↑ . wikidata.org.
  16. [17] ↑ . wikidata.org.
  17. [18] ↑ . wikidata.org.
  18. [19] ↑ . wikidata.org.
  19. [20] ↑ . RFC 9562: Universally Unique IDentifiers (UUIDs). wikidata.org.
  20. [21] ↑ . wikidata.org.
  21. [22] ↑ . wikidata.org.
  22. [23] ↑ . wikidata.org.
  23. [24] ↑ . w3.org. w3.org. Provenance: wikidata.org.
  24. [25] ↑ . wikidata.org.
  25. [26] ↑ . wikidata.org.

Aggregate / graph-position facts

  1. [1] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [27] ↑ . Wikidata sitelinks. wikidata.org.
  3. [28] ↑ . Wikidata aliases. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). Universally Unique Identifier. Retrieved April 11, 2026, from https://4ort.xyz/entity/universally-unique-identifier
MLA “Universally Unique Identifier.” 4ort.xyz Knowledge Graph, 4ort.xyz, 11 Apr. 2026, https://4ort.xyz/entity/universally-unique-identifier.
BibTeX @misc{4ortxyz_universally-unique-identifier_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Universally Unique Identifier}}, year = {2026}, url = {https://4ort.xyz/entity/universally-unique-identifier}, note = {Accessed: 2026-04-11}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Universally Unique Identifier — https://4ort.xyz/entity/universally-unique-identifier (retrieved 2026-04-11)

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