--- service: a.root-servers.net start-period: '2014-01-01T00:00:00Z' end-period: '2014-01-01T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1197123640 dns-udp-queries-received-ipv6: 46037740 dns-tcp-queries-received-ipv4: 5986418 dns-tcp-queries-received-ipv6: 662691 dns-udp-responses-sent-ipv4: 1195848246 dns-udp-responses-sent-ipv6: 46045072 dns-tcp-responses-sent-ipv4: 6238478 dns-tcp-responses-sent-ipv6: 46