--- service: a.root-servers.net start-period: '2017-02-25T00:00:00Z' end-period: '2017-02-25T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4228712173 dns-udp-queries-received-ipv6: 468352144 dns-tcp-queries-received-ipv4: 181982059 dns-tcp-queries-received-ipv6: 8044004 dns-udp-responses-sent-ipv4: 4226399675 dns-udp-responses-sent-ipv6: 468306689 dns-tcp-responses-sent-ipv4: 182391351 dns-tcp-responses-sent-ipv6: 8098648