Wednesday 25 March 2015

Setting up reverse DNS

All IP addresses have a delegated DNS server that is used to provide the reverse DNS information.

To find ou which DNS server is the authoarative one for your IP you can use nslookup:

set type=SOA

Will then return the authorative nameserver - we will then need to request an PTR record is added for us (assuming we don't have access to the DNS server!)

For example: 900    IN    PTR


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