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Yes, as we use onapp for our cloud platform we integrated it for CDN and DNS Anycast

Knot (the authoritative server of .cz, lightweight and fast) or Yadifa (the authoritative server of .eu)

The mtr to 202.96.0.133(the DNS of China Telecome Beijing)

A) for a DNS server THE criterium is standards compliance and reliability.

I've run my own PowerDNS cluster (MySQL Backend) before but i've found it tends to be RAM heavy (usually 768mb VPS or upwards).

Raw: Client request comes in, dns server asks GeoIP server "Where is this (clients) IP from?", GeoIP server answers "country X", dns server finds closest/best/whate

Oh, and btw: your 2nd anycasted DNS server won't do you no good because from AnyCasts point of view there is no problem. Actually it may turn against you because you can't know how the "clien

Very good point, but as you correctly point out later in your comment, there will be at least 2 anycast DNS nodes in each POP (ns1 + ns2). Me, like Arthur C. Clarke's Ramans, like threes, so: ns1 + ns

Sure, you can set up every dns server with data for "it's" region. So, if a client ends up at your EU DNS server, (s)he gets the EU "view", i.e. the IP of, say, you

Very good point here. Correct me if I'm wrong, but my understanding of anycast DNS was that it works like BIND Views, where each DNS node is assigned a "View" with different &quo

I feel that AnyCast is somewhat misunderstood sometimes. Shortening it somewhat bluntly, Anycast solves the Providers problem (availability, least cost reachability, etc) while aglodek wants to mainly

@gbshouse: sure, I'm open to ideas and happy to discuss options. In the meantime, here's what I'm looking for in terms of DNS management:

@vld - remember that clients never query our servers directly, always via public DNS (such as Google DNS or OpenDNS). As mentioned earlier EDNS0 packets are never cached on packet level and not cached

For a record with 2 geodns ips, US/DE coordinates:

Is rage4 still caching edns0 answers, ignoring subnet until the cache expires?

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Not true, most of modern public DNS servers support ENDS0 with client subnet option and GeoDNS is pretty accurate

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Sure, but anycast DNS will not solve your problem of routing to the nearest web-server. Anycast DNS is only answering the query from the client by the DNS server that is closest to the client. What IP