up_the_irons, http://portal.arpnetworks.com redirects to https://arpnetworks.com instead of https://portal.arpnetworks.com
FYI mercutio, 4.2.2.2 doesn't return nxdomain either.
(You mentioned trying them yesterday when mkb_ complained that their ISP no longer returns nxdomain)
oh since when?
has that always been the case?
Don't think it's always been the case, but I first noticed it a few months ago
8.8.4.4 still returns nxdomain at least, so that's something.
First google result is from a year ago https://www.reddit.com/r/sysadmin/comments/3hk05x/level_3_now_hijacking_nxdomain/
There's a HackerNews post from Jan 2014 claiming Level3 are hijacking nxdomain
https://news.ycombinator.com/item?id=7119765
And that's the first mention I can find of it.
i feel like there needs to be better dns benchmarks
random sites from alexa top list isn't really a good benchmark for any real world relevance
knot dns recursor has a cool shared cache thing.
and you can stop/start it and maintain cache
persistent cache on a dns recursor is something that used to be lacking; although i think there was one bad example