yes, and no. Some sites use DNS to route traffic to different servers for different regions. For instance you could have you site hosted on 2 different data-cen

yes, and no. Some sites use DNS to route traffic to different servers for different regions. For instance you could have you site hosted on 2 different data-centers. 1 in EU and 1 in US. And then make US-centric DNS route traffic for your site to the US-datacenter and he EU-centric-dns to EU-data-center. In that way you kinda know which DNS they used.