--- service: a.root-servers.net start-period: '2016-05-25T00:00:00Z' end-period: '2016-05-25T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6797269021 dns-udp-queries-received-ipv6: 455016602 dns-tcp-queries-received-ipv4: 77931797 dns-tcp-queries-received-ipv6: 5467578 dns-udp-responses-sent-ipv4: 6797117207 dns-udp-responses-sent-ipv6: 454774942 dns-tcp-responses-sent-ipv4: 65996512 dns-tcp-responses-sent-ipv6: 326706