--- service: a.root-servers.net start-period: '2016-07-13T00:00:00Z' end-period: '2016-07-13T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4625251799 dns-udp-queries-received-ipv6: 515697643 dns-tcp-queries-received-ipv4: 86897787 dns-tcp-queries-received-ipv6: 8136193 dns-udp-responses-sent-ipv4: 4625133249 dns-udp-responses-sent-ipv6: 515834098 dns-tcp-responses-sent-ipv4: 72016741 dns-tcp-responses-sent-ipv6: 1196370