[Pdns-users] reverse zone /27 subnet - migrating from bind

Brian Candler b.candler at pobox.com
Fri Jan 25 09:07:19 UTC 2019

On 25/01/2019 08:54, Matthias Cramer wrote:
> You cant ask your dns directly, it only knows about the zone 118-
> So you would need do do:
> dig 118.18- ptr @dnsip
> to get a correct result you have to ask the dns at the provider and there you get back a cname pointing to your entry,.

Yes, the "delegation" is a magic CNAME record:

$ dig @ +trace -x

... 86400 IN    CNAME 
118- 86400 IN    NS ns2.abominable.org.uk.
118- 86400 IN    NS ns1.abominable.org.uk.

And therefore *in this particular example* you create the zone 
"118-" and create PTR record "118" within it.

More information about the Pdns-users mailing list