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The least expensive way would definitely be a redirect on nasa.gov to www.nasa.gov. I really don't think this would require multiple servers for volume (a single very small static file), though redundancy would be smart.

They've obviously chosen the "web browsers handle it mostly, we don't have to think about it" option, which is almost as good, requires zero operational support, and is free.

I hadn't thought about the idea of configuring their DNS to return live results of (essentially) proxied Akamai lookups, which would eliminate the problem of hard wiring their A record to IPs under Akamai's control. That's a neat solution, do any of any the major nameserver sw pkgs support it?




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