Shaun, Good catch!!! I would be nice if this was lowered to 1 second.
#dig o-o.myaddr.l.google.com -t txt @8.8.4.4 ;; ANSWER SECTION: o-o.myaddr.l.google.com. 51 IN TXT "74.125.80.4" o-o.myaddr.l.google.com. 51 IN TXT "edns0-client-subnet 14.161.5.0/24" <<< Not my ip but someone from this IP did query this 9 seconds ago. -----Original Message----- From: Shaun [mailto:na...@shat.net] Sent: Wednesday, August 23, 2017 11:21 PM To: Erik Sundberg Cc: nanog@nanog.org Subject: Re: Google DNS --- Figuring out which DNS Cluster you are using On Wed, 23 Aug 2017 20:09:49 +0000 Erik Sundberg <esundb...@nitelusa.com> wrote: > Which Google DNS Server Cluster am I using. I am testing this from > Chicago, IL > > # dig o-o.myaddr.l.google.com -t txt +short @8.8.8.8 > "173.194.94.135" <<<<<<DNS Server IP, reference the list > above to get the cluster, Council Bluffs, IA > "edns0-client-subnet 207.xxx.xxx.0/24" <<<< > Your Source IP Block Worth noting, this record has TTL 60 and caching can cause unexpected responses; you may have to try a few times to get the correct data. My first attempt gave me an unrecognized "edns0-client-subnet" and a Google IP from Finland when I was querying from Atlanta. -s ________________________________ CONFIDENTIALITY NOTICE: This e-mail transmission, and any documents, files or previous e-mail messages attached to it may contain confidential information that is legally privileged. If you are not the intended recipient, or a person responsible for delivering it to the intended recipient, you are hereby notified that any disclosure, copying, distribution or use of any of the information contained in or attached to this transmission is STRICTLY PROHIBITED. If you have received this transmission in error please notify the sender immediately by replying to this e-mail. You must destroy the original transmission and its attachments without reading or saving in any manner. Thank you.
