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
Related Entities
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% similarUnverifiedStripe, OpenAI's payment processor, checks the consistency among IP address, billing address, and card-issuing country at the risk-control level.53% similar
Cite This Claim
Stable URI
https://kongchang.com/claim/914004API
curl https://kongchang.com/api/v1/knowledge/claims/914004MCP
get_claim(id=914004)