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DNS Scoped Data Through '_Underscore' Attribute Leaves

Document Type Replaced Internet-Draft (dnsop WG)
Author Dave Crocker
Last updated 2016-03-14 (Latest revision 2015-11-14)
Replaced by RFC 8552
Stream Internet Engineering Task Force (IETF)
Intended RFC status Best Current Practice
Expired & archived
Stream WG state Adopted by a WG
Document shepherd (None)
IESG IESG state Replaced by draft-ietf-dnsop-attrleaf
Consensus boilerplate Yes
Telechat date (None)
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


Historically, any DNS RR may occur for any domain name. Recent additions have defined DNS leaf nodes that contain a reserved node name, beginning with an underscore. The underscore construct is used to define a semantic scope for DNS records that are associated with the parent domain. This specification explores the nature of this DNS usage and defines the "underscore names" registry with IANA.


Dave Crocker

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)