[dns-operations] service showing (last) resolver's IP ?

[Stephane Bortzmeyer]

On Sat, Dec 09, 2017 at 12:52:13PM +0300,
 Frank Habicht <geier at geier.ne.tz> wrote 
 a message of 19 lines which said:

> There MUST be somewhere one (or more) service(s) that can tell me from
> what source IP the resolver (or the last one in a chain) queries the
> authorities.

And if you want the physical location of the resolver :-)

% dig -t loc latlon.v4.powerdns.org
...
;; ANSWER SECTION:
latlon.v4.powerdns.org.	60 IN LOC 48 53 33.007 N 2 20 39.840 E 0.00m 1m 10000m 10m