EasyDNS is one of the older Anycast DNS services. EasyDNS is also a domain name registrar where you can register and manage your domain names. You should definitely read this article from EasyDNS. EasyDNS also offers DNS failover. Recently, EasyDNS patented a technology called Proactive NameServers which promises 100% DNS uptime for mission critical domain names. Proactive name servers also supports Route53.
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The following chart shows how the DNS lookup speed of EasyDNS’s nameservers has changed over the past six months: