nanog mailing list archives

Re: nike.com->nike.com/ca


From: William Herrin <bill () herrin us>
Date: Wed, 6 Jan 2021 13:50:58 -0800

On Wed, Jan 6, 2021 at 1:48 PM William Herrin <bill () herrin us> wrote:
On Wed, Jan 6, 2021 at 1:42 PM Kain, Becki (.) <bkain1 () ford com> wrote:
At home, using 8.8.8.8, if I goto www.nike.com, I get rerouted to nike.com/ca. I cleared the dns cache (I’m running 
Catalina macos) and rebooted just because.  Anyone else seen a weirdism on this?  thanks

Welcome to Why You Shouldn't Make Customer-Visible Decisions Based On
DNS Resolver Geolocation or DNS Load Balancing Sucks 101.

Nike.com is geolocating the server IP address which requests the web
site address. This isn't yours or 8.8.8.8 but instead some unicast IP
address to which your 8.8.8.8 packet was routed. Possibly in Canada.
Nike appears to think so.

Though I'm probably talking out my tail since this is an HTTP redirect
which would know your originating IP address (unless you're knowingly
or unknowingly using a proxy).

-Bill



-- 
Hire me! https://bill.herrin.us/resume/


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