[rssac-caucus] NSID or other identifying support by rootops?

Greetings again. In a definitely non-exhaustive survey, it appears that F, H, K, and L respond to the EDN0 NSID (RFC 5001) query. 1) Are there others that do so, at least on some of their hosts? 2) Are there rootops who do per-host identification in some other way? 3) Is this an appropriate topic for the RSSAC Caucus? --Paul Hoffman