%% You should probably cite rfc8020 instead of this I-D. @techreport{ietf-dnsop-nxdomain-cut-00, number = {draft-ietf-dnsop-nxdomain-cut-00}, type = {Internet-Draft}, institution = {Internet Engineering Task Force}, publisher = {Internet Engineering Task Force}, note = {Work in Progress}, url = {https://datatracker.ietf.org/doc/draft-ietf-dnsop-nxdomain-cut/00/}, author = {Stéphane Bortzmeyer and Shumon Huque}, title = {{NXDOMAIN really means there is nothing underneath}}, pagetotal = 9, year = 2015, month = dec, day = 27, abstract = {This document states clearly that when a DNS resolver receives a response with response code of NXDOMAIN, it means that the domain name which is thus denied AND ALL THE NAMES UNDER IT do not exist. REMOVE BEFORE PUBLICATION: this document should be discussed in the IETF DNSOP (DNS Operations) group, through its mailing list. The source of the document, as well as a list of open issues, is currently kept at Github {[}1{]}. This documents clarifies RFC 1034 and modifies a bit RFC 2308 so it updates both of them.}, }