The M8 metrics analyze the DNS traffic at Authoritative Servers. The data collected by participating servers gives us a good statistical sampling of that traffic originating from recursive resolvers, or from clients interacting directly with authoritative servers. We track this behavior with several metrics.
The first metric, M8.1 is about usage. In the following table, the current value is the value of the metric for the current month. The average value is the average value of that metric over the 12 months preceeding this one -- or the average since the beginning of measurements if measurements started fewer than 12 months ago.
Current value | Average value | |
---|---|---|
M8.1: % NX Domain Queries at Authoritative | - | - |
The next three metrics are about properties of the resolvers. Resolvers are identified by IP address, and a given IP address is only counted once. For a given server, the ratios are computed over the total number of resolvers that contacted this server. The ratios measured at different authoritative servers are then averaged to compute the metric. The metrics tracking resolver behavior are:
In the following table, the current value is the value of the metric for the current month. The average value is the average value of that metric over the 12 months preceeding this one -- or the average since the beginning of measurements if measurements started fewer than 12 months ago.