BIND 9.9 cannot resolve PTR record but +trace can

Aras Yorgancı yorgancia at
Wed Apr 11 13:49:15 UTC 2018

Alinti Anand Buddhdev <anandb at>

> The delegation of points to and
> But these two names are aliased to and
> However, one cannot use alias names as targets of NS records. This is
> forbidden by RFC 2181, section 10.3.
> The operator of this reverse zone (EST Bilisim) should update the
> delegation of (in the RIPE Database) and use
> the proper name servers names in there. If you know someone there,
> please inform them.
> Regards,
> Anand
> On 11/04/2018 15:23, Aras Yorgancı wrote:

Thanks for reply. I understand that there is an illegal situation but  
other dns servers can resolve this query while BIND cannot. Maybe I  
have not much knowledge about subject but I wonder is there any way or  
any configuration to resolve this query with my BIND server, bypass  
this prohibition?


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