--- service: a.root-servers.net start-period: '2016-06-10T00:00:00Z' end-period: '2016-06-10T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5507574885 dns-udp-queries-received-ipv6: 471359433 dns-tcp-queries-received-ipv4: 80013556 dns-tcp-queries-received-ipv6: 5371786 dns-udp-responses-sent-ipv4: 5507093597 dns-udp-responses-sent-ipv6: 471019241 dns-tcp-responses-sent-ipv4: 67780655 dns-tcp-responses-sent-ipv6: 321169