in-addr.arpa is the domain, and IPs are looked up in reverse. For an IP address such as 64.236.24.4, the DNS resolver looks up the name 4.24.236.64.in-addr.arpa to find out its reverse. IPv6 is done similarly, but with the domain ip6.arpa.
__________________
"There are finer fish in the sea than have ever been caught." -- Irish proverb
|