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When
the IP address is typed, NS Lookup will return the host
name.
When the host name is typed, NS Lookup it will return the
IP address assigned to the host.
This utility can come in handy when a host forward and reverse
address do not match.
Example: YourHost.com returns IP 216.41.20.2, but when you
lookup 216.41.20.2 it returns a newhost.com
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