--- service: a.root-servers.net start-period: '2015-01-14T00:00:00Z' end-period: '2015-01-14T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 10534610854 dns-udp-queries-received-ipv6: 612041076 dns-tcp-queries-received-ipv4: 122989078 dns-tcp-queries-received-ipv6: 5562836 dns-udp-responses-sent-ipv4: 10534104513 dns-udp-responses-sent-ipv6: 611961068 dns-tcp-responses-sent-ipv4: 117626304 dns-tcp-responses-sent-ipv6: 1552822