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Hi Nick, everyone,

Nick Johnson <nick=40ethereum....@dmarc.ietf.org> wrote:
> I'm working on a system that needs to authenticate a TLD
> owner/operator in order to take specific actions. We had
> intended to handle this by requiring them to publish a token in
> a TXT record under a subdomain of nic.tld, but it's been
> brought to our attention that we can't rely on nic.tld being
> owned by the TLD operators - this is only a reserved domain on
> ICANN new-gTLDs, not on ccTLDs or older gTLDs.

The SOA record for a TLD contains two DNS names which should be
under the control of the NIC: that of the primary master
nameserver, and the e-mail of the responsible administrator
(which includes a domain name).

Intro: https://en.wikipedia.org/wiki/SOA_record

People on this list can probably comment on whether my above
assumption is correct, and whether those are good candidates for
what you have in mind.

Hope this helps,
 - Bjarni

- -- 
Sent using Mailpile, Free Software from www.mailpile.is

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