Quad9 has deployed its public DNS resolver solution at nearly 150 locations worldwide, in 84 nations. With such a widely-distributed set of servers and services, having adequate visibility into performance behaviors is a critical and difficult task when validating operational metrics and alerting on out-of-normal conditions. Both our core DNS service, as well as the BGP configurations we use, need external monitoring and trend analysis, and ThousandEyes is helping us in both areas.
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