--- service: a.root-servers.net start-period: '2014-12-13T00:00:00Z' end-period: '2014-12-13T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2516419061 dns-udp-queries-received-ipv6: 175556718 dns-tcp-queries-received-ipv4: 17901845 dns-tcp-queries-received-ipv6: 2308178 dns-udp-responses-sent-ipv4: 2515715235 dns-udp-responses-sent-ipv6: 175500442 dns-tcp-responses-sent-ipv4: 16730092 dns-tcp-responses-sent-ipv6: 1599972