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.arpa

top-level domain
Intangible top_level_domain Q158966

Facts

6 properties
Instance of
top-level domain
Inception
1999[3]
Official website
www.iana.org[4]
Described by source
RFC 6761: Special-Use Domain Names[6]
Maintained by
Internet Assigned Numbers Authority[2]
Sponsor
Internet Architecture Board[5]
🏷️ Also known as
en Address and Routing Parameter Area en .arpa en arpa en infrastructure top-level domain de Address and Routing Parameter Area
🔖 Identifiers · 5
File Format Wiki page ID
TLD_.arpa
Freebase ID
/m/03yg0m
IANA Root Zone Database ID
arpa
ICANNWiki page ID
.arpa
Wolfram Language entity code
Entity["TopLevelDomain", "ARPA"]

Report an error or request removal Lineage (PROV-JSON)

🔗 Connections
Instance of 1
top-level domain
Maintained by 1
Internet Assigned Numbers Authority
Sponsor 1
Internet Architecture Board
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Summary

.arpa is a top-level domain[1].

Why It Matters

.

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] ↑ . wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. 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). .arpa. Retrieved November 3, 2026, from https://4ort.xyz/entity/arpa
MLA “.arpa.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 Nov. 2026, https://4ort.xyz/entity/arpa.
BibTeX @misc{4ortxyz_arpa_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{.arpa}}, year = {2026}, url = {https://4ort.xyz/entity/arpa}, note = {Accessed: 2026-11-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): .arpa — https://4ort.xyz/entity/arpa (retrieved 2026-11-03)

Canonical URL: https://4ort.xyz/entity/arpa · Last refreshed:

Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 7w ago · Bb010g · 2026-09-09 view diff on Wikidata ↗
    Official website → http://www.iana.org/arpa-dom/
    Instance of → top-level domain
    Sponsor → Internet Architecture Board
    Instance of → —
    + 7 other properties edited (see Wikidata diff for full list)
    "/* wbsetclaim-update:2||1|1 */ Wolfram Language entity code: Entity["TopLevelDomain", "ARPA"]"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.