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Test from San Jose Location.
09-01-2012, 02:27 AM
Post: #2
RE: Test from San Jose Location.
You can get IP addresses for all of the agents here: http://www.webpagetest.org/getTesters.php

That said, your CDN probably meant to say that they serve content based on the IP address of the ISP's DNS server.

I don't have direct access to those for all of the locations but it's usually fairly easy to see by running a tcpdump with the test and just watching to see where the DNS requests are sent. I say "usually" because for some reason the tcpdumps are not working from San Jose Undecided

In the case of San Jose I do have access though so I pulled the list of DNS servers:
Primary - 208.166.50.13
Secondary - 67.207.201.6

As DNS is usually anycast you need to run a traceroute from the test agent to figure out where it goes: http://www.webpagetest.org/result/120831_GX_CKB/

Being ~1ms away from the test server pretty much guarantees that the DNS servers are on the west coast (probably in the same data center).
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Test from San Jose Location. - artuser - 08-31-2012, 08:04 AM
RE: Test from San Jose Location. - pmeenan - 09-01-2012 02:27 AM

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