--- service: a.root-servers.net start-period: '2014-04-04T00:00:00Z' end-period: '2014-04-04T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2259184461 dns-udp-queries-received-ipv6: 86049360 dns-tcp-queries-received-ipv4: 11496616 dns-tcp-queries-received-ipv6: 838966 dns-udp-responses-sent-ipv4: 2258586185 dns-udp-responses-sent-ipv6: 86022808 dns-tcp-responses-sent-ipv4: 11490781 dns-tcp-responses-sent-ipv6: 121