|
|
|
|
|
|
by mrngm
588 days ago
|
|
|
$ dig @8.8.8.8 +nsid news.ycombinator.com.
; NSID: 67 70 64 6e 73 2d 61 6d 73 ("gpdns-ams")
news.ycombinator.com. 1 IN A 209.216.230.207
Repeating the same query returned: ; NSID: 67 70 64 6e 73 2d 67 72 71 ("gpdns-grq")
A few other resolvers implement this as well, e.g. 1.1.1.1 and 9.9.9.9: 1.1.1.1: ; NSID: 35 32 31 6d 32 37 34 ("521m274")
9.9.9.9: ; NSID: 72 65 73 31 32 31 2e 61 6d 73 2e 72 72 64 6e 73 2e 70 63 68 2e 6e 65 74 ("res121.ams.rrdns.pch.net")
with, as you can see, various degrees of human-readable information on the actual replying resolver.(more DNS resolver introspection tricks can be found with DNSDiag https://dnsdiag.org/ ) |
|
|