The IESG has approved the following document:
- 'NXDOMAIN really means there is nothing underneath'
(draft-ietf-dnsop-nxdomain-cut-05.txt) as Proposed Standard
This document is the product of the Domain Name System Operations Working
The IESG contact persons are Benoit Claise and Joel Jaeggli.
A URL of this Internet Draft is:
This document clearly states that when a DNS resolver receives the response
code of NXDOMAIN, it means that the domain name queried AND ALL THE NAMES UNDER
IT do not exist. Currently this is an ambitious area where behavior varies
depending on implementation.
The document updates Section 5 of RFC2308, and attempts to clarify RFC1034
Proposed Standard was chosen as it updates existing Standards.
Working Group Summary
This document was reviewed and discussed both in DNSOP, but also other
DNS-releated mailing lists. The topic of strongly defining what happens with a
NXDOMAIN and below that, especially with root TLD servers. There was strong
consensus to finally address outstanding issues in old standards.
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