--- service: a.root-servers.net start-period: '2013-11-25T00:00:00Z' end-period: '2013-11-25T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1555032743 dns-udp-queries-received-ipv6: 85787727 dns-tcp-queries-received-ipv4: 7531491 dns-tcp-queries-received-ipv6: 1331315 dns-udp-responses-sent-ipv4: 1553762997 dns-udp-responses-sent-ipv6: 85797319 dns-tcp-responses-sent-ipv4: 7920401 dns-tcp-responses-sent-ipv6: 188