--- service: a.root-servers.net start-period: '2017-02-13T00:00:00Z' end-period: '2017-02-13T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4811428965 dns-udp-queries-received-ipv6: 492104481 dns-tcp-queries-received-ipv4: 155425624 dns-tcp-queries-received-ipv6: 8633043 dns-udp-responses-sent-ipv4: 4806678367 dns-udp-responses-sent-ipv6: 491960808 dns-tcp-responses-sent-ipv4: 156021037 dns-tcp-responses-sent-ipv6: 8648368