[anti-abuse-wg] Reverse DNS delegations

On Mon 08/Apr/2024 12:19:15 +0200 Gert Doering wrote:
> On Mon, Apr 08, 2024 at 12:10:57PM +0200, Alessandro Vesely wrote:
>> 
>> Delegations don't seem to be generated from the database.  How is that
>> supposed to work?
> 
> They are, but maybe not for the highest level.
> 
> Like, 8.0.6.0.1.0.0.2.ip6.arpa - that's our space, 2001:608::/32, and
> the reverse DNS delegation was done (back then, in August 2002) via
> the DB entry, and I'm assured it still works that way.


Yup, that matches:

$ dig 8.0.6.0.1.0.0.2.ip6.arpa ns

; <<>> DiG 9.18.24-1-Debian <<>> 8.0.6.0.1.0.0.2.ip6.arpa ns
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 26275
;; flags: qr rd ra; QUERY: 1, ANSWER: 4, AUTHORITY: 0, ADDITIONAL: 7

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
; COOKIE: f5890ae0f4d0b456010000006613c858ab439750be740ddf (good)
;; QUESTION SECTION:
;8.0.6.0.1.0.0.2.ip6.arpa.	IN	NS

;; ANSWER SECTION:
8.0.6.0.1.0.0.2.ip6.arpa. 43200	IN	NS	ns4.dns.space.net.
8.0.6.0.1.0.0.2.ip6.arpa. 43200	IN	NS	ns.ripe.net.
8.0.6.0.1.0.0.2.ip6.arpa. 43200	IN	NS	ns.space.net.
8.0.6.0.1.0.0.2.ip6.arpa. 43200	IN	NS	ns3.dns.space.net.

...

$ whois -h whois.ripe.net -T domain -d 2001:608::
% This is the RIPE Database query service.
% The objects are in RPSL format.
%
% The RIPE Database is subject to Terms and Conditions.
% See https://apps.db.ripe.net/docs/HTML-Terms-And-Conditions

% Note: this output has been filtered.
%       To receive output for a database update, use the "-B" flag.

% Information related to '8.0.6.0.1.0.0.2.ip6.arpa'

domain:         8.0.6.0.1.0.0.2.ip6.arpa
descr:          SpaceNET IPv6 Space, reverse delegation (new style)
admin-c:        SVB
tech-c:         SPCN-RIPE
zone-c:         SPCN-RIPE
nserver:        ns.ripe.net
nserver:        ns.space.net
nserver:        ns3.dns.space.net
nserver:        ns4.dns.space.net
mnt-by:         SPACENET-N
created:        2002-08-19T13:31:57Z
last-modified:  2016-12-07T21:11:25Z
source:         RIPE

...


Thanks
Ale
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