Default Reverse Lookup name for unused IP in unbound

Joe Abley jabley at
Fri Sep 23 12:27:08 UTC 2022

On Sep 23, 2022, at 14:03, JAHANZAIB SYED via Unbound-users <unbound-users at> wrote:

> Ok with wildcard tip, I proceed little further.
> I added following record in reverse zone
> *       IN    PTR
> Now If I do nslookup for any LAN IP (pool 192.168.1.x/24) who doesn't have any PTR record, it resolves to
> >
> Name:
> Address:
> How can I turn this to default as (e.g:

You can either replace the wildcard record in the zone with lots of individual PTR records (this is more practical with IPv4 than IPv6) or you can...

> From: Måns Nilsson
> Sent: Friday, September 23, 2022 4:05 PM
> Cc: unbound-users at
> Subject: Re: Default Reverse Lookup name for unused IP in unbound
> If you want to have a more special RDATA section in the reply, an
> active authoritative server is required, where ansvers are synthesized
> on-the-fly.

... do something like that.

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