--- service: a.root-servers.net start-period: '2014-05-20T00:00:00Z' end-period: '2014-05-20T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2440095094 dns-udp-queries-received-ipv6: 113589790 dns-tcp-queries-received-ipv4: 12574698 dns-tcp-queries-received-ipv6: 834487 dns-udp-responses-sent-ipv4: 2439418495 dns-udp-responses-sent-ipv6: 113569992 dns-tcp-responses-sent-ipv4: 12577611 dns-tcp-responses-sent-ipv6: 9448