--- service: a.root-servers.net start-period: '2015-02-11T00:00:00Z' end-period: '2015-02-11T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3125336451 dns-udp-queries-received-ipv6: 223856412 dns-tcp-queries-received-ipv4: 16501457 dns-tcp-queries-received-ipv6: 1879869 dns-udp-responses-sent-ipv4: 3124631833 dns-udp-responses-sent-ipv6: 223694550 dns-tcp-responses-sent-ipv4: 14460386 dns-tcp-responses-sent-ipv6: 999720