Hi, I did the OPS-DIR review for draft-ietf-dnsop-negative-trust-anchors-10.txt Summary: document ready for publication I think the document explains very well what an NTA is and how to operate/deal with it. I have not been involved in the creation/evaluation/review of the document up till now. So the question that I have in my mind may very well have been conmsidered and answered. The question is about: The document in section 2 states that before installing a NTA, ISP (DNS resolver) personal should: Finally, they should make a reasonable attempt to contact the domain owner of the misconfigured zone, preferably prior to implementing the Negative Trust Anchor. So is it often too difficylt to ask the woner to fix the misconfiguration quickly instead of installing a NTA ??? I see no negative operational impact if the procedures to install/maintain a NTA according to this document. Bert