--- service: a.root-servers.net start-period: '2016-07-04T00:00:00Z' end-period: '2016-07-04T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4322537220 dns-udp-queries-received-ipv6: 452609836 dns-tcp-queries-received-ipv4: 74745500 dns-tcp-queries-received-ipv6: 6476507 dns-udp-responses-sent-ipv4: 4322195716 dns-udp-responses-sent-ipv6: 452559757 dns-tcp-responses-sent-ipv4: 62083031 dns-tcp-responses-sent-ipv6: 306043