On Feb 8, 2012, at 11:58 AM, Anurag Bhatia wrote: > Mike > > I can also have a single DNS >> server give 192.0.2.80 out to queries sourced from a US IP Address, >> 198.51.100.80 for queries sourced from a German IP Address and >> 203.0.113.80 to queries sourced from a Chinese address (djbdns has a >> module for this for example). > > > I have never did such setup, but I assume it works as you say. I wonder how > it finds a US based system from IP quickly (since it's DNS server)?
Here is *one* method if you obtain a feed of geo-ip data from someone like Maxmind: http://phix.me/geodns/ Several DNS providers have different methods and different geo-ip data vendors. -b
