A record of domain name must be name server ?

Eliezer Croitoru eliezer at ngtech.co.il
Wed Sep 10 21:48:10 UTC 2014

Hey Kevin,

This is not an issue at all.
A PTR is different then a "A" record and can be used by two reverse 
domain names and only the owner of the IP addresses space can define them.
I am not sure if two PTR records for two domains will be applied to one 
IP but it is possible for two IP addresses to have the same PTR.

Can we even use a CNAME as a PTR???


On 09/11/2014 12:37 AM, Kevin Darcy wrote:
> Also, have you considered the forward/reverse ambiguity that arises when
> multiple owner names resolve to the same address? To which of those
> names does the PTR point?
>      - Kevin

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