.arpa
ActiveNot a consumer domain — it appears in technical DNS records, not in browsers.
- Type
- Infrastructure
- Introduced
- Verify from registry
- Status
- Active
- Registry
- Internet Architecture Board (IAB)
- Region
- Global
- Intended Use
- Reverse DNS (in-addr.arpa, ip6.arpa)
Meaning & Restrictions
- Meaning
- A special-purpose infrastructure domain used for internet plumbing (reverse DNS, ENUM), administered by the IAB with IANA.
- Restrictions
- Closed. Not available for registration under any circumstances; delegations are made by the IAB/IANA for protocol use.
- Common uses
- Reverse DNS (in-addr.arpa, ip6.arpa), ENUM telephone mapping, Protocol infrastructure
Availability by label length
Share of checked .arpa labels with no DNS, by label length.
Collecting
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