PTR Record
Pointer record - also called ëinverseí
IP address to hostname mapping
Often incorrectly configured, or forgotten
Required for some services to function
- ìrî Services, some FTP Servers
Uses ëinvertedí IP addresses:
71.128.44.161.in-addr.arpa. in ptr hq.opus1.com.
72.128.44.161.in-addr.arpa. in ptr fang.opus1.com.
73.128.44.161.in-addr.arpa. in ptr tide.opus1.com.
74.128.44.161.in-addr.arpa. in ptr wash.opus1.com.