Hi Dmitry,

You can use redirects as described by section 5.2 of RFC 7480:

https://datatracker.ietf.org/doc/html/rfc7480#section-5.2

Redirects are commonly used in the RIR/INR space for IP addresses and ASNs and, as you have pointed out, the domain space for zones below the TLD level.

I hope this helps.

-andy

On 4/8/24 11:09, Dmitry Kohmanyuk wrote:
Hello everyone,

As a long-time lurker on regext@ and an infrequent participant in IETF 
meetings, I apologize if I missed something.  We have a practical issue with 
RDAP.

My registry, Hostmaster.UA have implemented RDAP for UA (URL: 
https://rdap.hostmaster.ua/, as included into IANA bootstrap.) Similarly to say 
UK we have multiple public suffixes where domains are registered, such as 
com.ua net.ua odesa.ua etc.

The trouble is, some of these domains are not managed by us;  let’s say that 
alice.ua would have rdap.alice.ua,  and bob.ua, rdap.bob.ua whereas com.ua 
would use IANA bootstrap element. Now, I want RDAP service to be as seamless as 
possible.

How can we implement this?  IANA JSON registry only has TLDs.  I can of course 
create my own bootstrap file but I cannot imagine practical way of informing 
RDAP clients of it’s existence.  I can use HTTP codes “moved permanently” when 
answering RDAP queries on our server.  (I can query the other server myself and 
serve the response; bad idea.)

Is there a most effective way to do it? Thanks!


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