--- service: a.root-servers.net start-period: '2014-02-15T00:00:00Z' end-period: '2014-02-15T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2019021331 dns-udp-queries-received-ipv6: 78019066 dns-tcp-queries-received-ipv4: 9627268 dns-tcp-queries-received-ipv6: 1063499 dns-udp-responses-sent-ipv4: 2017617261 dns-udp-responses-sent-ipv6: 78011960 dns-tcp-responses-sent-ipv4: 9653882 dns-tcp-responses-sent-ipv6: 107