--- service: a.root-servers.net start-period: '2014-12-29T00:00:00Z' end-period: '2014-12-29T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2739427828 dns-udp-queries-received-ipv6: 196287645 dns-tcp-queries-received-ipv4: 14564811 dns-tcp-queries-received-ipv6: 2432184 dns-udp-responses-sent-ipv4: 2738823652 dns-udp-responses-sent-ipv6: 196259252 dns-tcp-responses-sent-ipv4: 13445061 dns-tcp-responses-sent-ipv6: 1606319