Pointer Record. Also called a reverse record. A PTR record associates an IP address with a canonical name. PTR records should point to a name that can be resolved back to the IP address . The name of the pointer record is not the IP address itself, but is the IP address’ four IP octets in reverse order followed by IN-ADDR.ARPA. for Example:

70.121.0.1 becomes 1.0.168.192.IN-ADDR.ARPA

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Error: lame server resolving