I am looking for a commercial DNS service that provides geo-directionality. Suppose I have 4 data centers scattered thruout the world and want users to hit the closest data center based on proximity checks (pings, TTLs, latency, load, etc.). I know one can "roll their own", using various geo-locational data from companies like Maxmind. I am *not* interested in that. I am *not* interested in applicances like the Cisco ACE GSS 4400 either (that do this as well): http://www.cisco.com/en/US/products/hw/contnetw/ps4162/ What I am looking for is a commercial DNS service. Is the Akamai Edgescape service the closest to what I want: http://www.akamai.com/html/technology/products/edgescape.html Is anyone using it? Can you recommend it? Another service I know about is the Ultradns (now Neustar) Directional DNS: http://www.neustarultraservices.biz/solutions/directionaldns.html But this service is based on statically defined IP responses at each of their 14 sites so there is no proximity checking done. Thanks, Hank