--- service: a.root-servers.net start-period: '2013-11-28T00:00:00Z' end-period: '2013-11-28T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1415469507 dns-udp-queries-received-ipv6: 74010175 dns-tcp-queries-received-ipv4: 7461822 dns-tcp-queries-received-ipv6: 1347716 dns-udp-responses-sent-ipv4: 1415063328 dns-udp-responses-sent-ipv6: 74009397 dns-tcp-responses-sent-ipv4: 7810165 dns-tcp-responses-sent-ipv6: 259