Unverified50% confidenceFactExact time

in-addr.arpa is used for reverse resolution of IPv4 addresses; for example, the IP address 192.0.2.1 is mapped to 1.2.0.192.in-addr.arpa.

1

Sources

50%

Confidence

Long-term

Relevance

9/12/2026

First Seen

Sources

What Is a .arpa Domain? Reverse DNS Lookup and How to Get One for Free

Related Entities

in-addr.arpaconcept

Related Claims

UnverifiedThe name .arpa originates from the Advanced Research Projects Agency (ARPA) of the U.S. Department of Defense, and has since been redefined to stand for Address and Routing Parameter Area.70% similar UnverifiedOpenAI 的支付处理商 Stripe 在风控层面会检测 IP 地址、账单地址与卡片发行国之间的一致性53% similar

Cite This Claim

Stable URI

https://kongchang.com/claim/914004

API

curl https://kongchang.com/api/v1/knowledge/claims/914004

MCP

get_claim(id=914004)