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

[niels=nanog () bakker net]

* bdantzig () medline com (Dantzig, Brian) [Thu 07 Jan 2021, 18:07 CET]:
> When you send a DNS query to 8.8.8.8 it goes to the “nearest” 
> resolver. Not nearest in terms of location since 8.8.8.8 is an 
> anycast address and exists in many locations. It’s the BGP path to 
> 8.8.8.8 that determines nearest. Next, the resolver does it’s thing 
> and sends a query to the akamai DNS. That DNS is probably also an 
> anycast address so again, how close is it? Akamai then tries to geo 
> locate you but they have the IP of Google, not you. You get an IP 
> and connect to that. Everything up till now probably doesn’t matter 
> as it’s probably not the DNS that is causing what you see. The IP is 
> not Nike but rather an akamai proxy. When you connect to akamai 
> proxy, the proxy can see your IP and may do the Geo location lookup 
> and pass what it thinks as your location to the content server. When 
> it gets to the content server, it may use that Geo information but 
> possibly not. It’s likely it’s not the content server but a load 
> balancer. In either case, they may ignore any Geo lookup done by 
> akamai and try to locate the incoming IP. Well, that’s actually the 
> address of the akamai proxy. Hopefully the developers thought of 
> this and had akamai pass your IP in a header and geo locate on that. 
> It’s probably the content server that is sending an HTTP redirect to 
> get you to the “/ca” location on the site.

I checked off list with Becki Kain and Akamai's geolocation is not 
placing her in Canada. I can't speculate as to what company Nike would 
be using for its decision to redirect to /ca on its website.


        -- Niels.