Reverse Lookup Zones - peplink Balance One User Manual

Reverse Lookup Zones

Reverse lookup zones can be configured in Network>Inbound Access>DNS Settings.
Reverse lookup refers to performing a DNS query to find one or more DNS names
associated with a given IP address.
The DNS stores IP addresses in the form of specially formatted names as pointer (PTR)
records using special domains/zones. The zone is in-addr.arpa.
To enable DNS clients to perform a reverse lookup for a host, perform two steps:
● Create a reverse lookup zone that corresponds to the subnet network address of
the host.
In the reverse lookup zone, add a pointer (PTR) resource record that maps the
host IP address to the host name.
● Click the New Reverse Lookup Zone button and enter a reverse lookup zone
name. If you are delegated the subnet 11.22.33.0/24, the Zone Name should be
33.22.11.in-arpa.addr. PTR records for 11.22.33.1, 11.22.33.2, ... 11.22.33.254
should be defined in this zone where the host IP numbers are 1, 2, ... 254,
respectively.
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