--- service: a.root-servers.net start-period: '2016-07-26T00:00:00Z' end-period: '2016-07-26T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3959401049 dns-udp-queries-received-ipv6: 489492217 dns-tcp-queries-received-ipv4: 79359119 dns-tcp-queries-received-ipv6: 8152887 dns-udp-responses-sent-ipv4: 3959153315 dns-udp-responses-sent-ipv6: 489428848 dns-tcp-responses-sent-ipv4: 63128063 dns-tcp-responses-sent-ipv6: 1269740