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The DNS Is Not Classy: DNS Classes Considered Useless

Document Type Expired Internet-Draft (individual)
Author Andrew Sullivan
Last updated 2017-01-09 (Latest revision 2016-07-08)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at:


Domain Name System Resource Records are identified in part by their class. The class field is not effective, and it is not used the way it appears to have been intended. This memo suspends additions to the DNS class registry pending greater clarity on how classes might be used, and until such clarification requires those defining new RRTYPEs to define them for all classes.


Andrew Sullivan

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