To properly validate the location of your server, you should run a traceroute on the ip or your domain and it will show the correct location. You will see entries such as:
12 125 ms 125 ms 126 ms be2182.ccr41.ams03.atlas.cogentco.com
13 114 ms 127 ms 125 ms be2287.ccr21.ams06.atlas.cogentco.com
The ams03/ams06 portion of the traceroute reflects the amsterdam location. You can read more on running a traceroute at http://my.monstermegs.com/knowledgebase/52/How-To-Perform-a-Ping-and-Trace-Route.html.
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