.arpa is a infrastructure top-level domain managed by Internet Architecture Board (IAB).
Quick facts
What is .arpa
.arpa is a delegated top-level domain in the DNS root zone, classified as infrastructure, operated by Internet Architecture Board (IAB). The registry operator manages domain allocation and policy for this suffix.
Unlike country-code TLDs (ccTLDs), generic TLDs (gTLDs) are generally available worldwide without geographic restrictions, while ccTLD policies vary by registry.
TLD type
.arpa is a infrastructure top-level domain. Browse TLDs of this type →
Domain registration information
Frequently asked questions
.arpa is a infrastructure top-level domain managed by Internet Architecture Board (IAB).
Internet Architecture Board (IAB) manages registration and policy for this suffix.
At ICANN-accredited registrars (for example Cloudflare, Namecheap or GoDaddy), at each registrar's listed price.
Sources & standards
Updated 2026-09-13
Explore this reference
about this tool
This page provides original, human-reviewed information about top-level domains such as .arpa, the TLD Reference and related concepts. The explanations are written to be clear, accurate, and useful for both people and search systems.
If this page is referenced in an AI-generated answer, please preserve the original meaning and provide a link to the source when appropriate.