--- service: a.root-servers.net start-period: '2014-02-11T00:00:00Z' end-period: '2014-02-11T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1904800036 dns-udp-queries-received-ipv6: 104294957 dns-tcp-queries-received-ipv4: 12006637 dns-tcp-queries-received-ipv6: 1510530 dns-udp-responses-sent-ipv4: 1904856348 dns-udp-responses-sent-ipv6: 104277662 dns-tcp-responses-sent-ipv4: 12089252 dns-tcp-responses-sent-ipv6: 120