Tests are from your connection using whatever resolver chain your ISP has in place. It uses a wildcard name record and an 8 byte json-p include. It alternates b

Tests are from your connection using whatever resolver chain your ISP has in place. It uses a wildcard name record and an 8 byte json-p include. It alternates between downloading that file from the same origin using a cached DNS record (test run up includes 3 downloads to prime the resolvers with a cached hostname) and an uncached record (a new randomly generated hostname) and reports the difference in time between the two.