On 21 Sep 2015, at 14:58, Paul Hoffman wrote:
Greetings again. In a definitely non-exhaustive survey, it appears that F, H, K, and L respond to the EDN0 NSID (RFC 5001) query.
We wrote down what L does: A new Request for Comments is now available in online RFC libraries. RFC 7108 Title: A Summary of Various Mechanisms Deployed at L-Root for the Identification of Anycast Nodes Author: J. Abley, T. Manderson Status: Informational Stream: Independent Date: January 2014 Mailbox: jabley at dyn.com, terry.manderson at icann.org Pages: 11 Characters: 24125 Updates/Obsoletes/SeeAlso: None I-D Tag: draft-jabley-dnsop-anycast-mapping-04.txt URL: http://www.rfc-editor.org/rfc/rfc7108.txt Anycast is a deployment technique commonly employed for authoritative-only servers in the Domain Name System (DNS). L-Root, one of the thirteen root servers, is deployed in this fashion. Various techniques have been used to map deployed anycast infrastructure externally, i.e., without reference to inside knowledge about where and how such infrastructure has been deployed. Motivations for performing such measurement exercises include operational troubleshooting and infrastructure risk assessment. In the specific case of L-Root, the ability to measure and map anycast infrastructure using the techniques mentioned in this document is provided for reasons of operational transparency. This document describes all facilities deployed at L-Root to facilitate mapping of its infrastructure and serves as documentation for L-Root as a measurable service.