--- service: a.root-servers.net start-period: '2016-09-29T00:00:00Z' end-period: '2016-09-29T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6245448424 dns-udp-queries-received-ipv6: 541623981 dns-tcp-queries-received-ipv4: 140239068 dns-tcp-queries-received-ipv6: 5611787 dns-udp-responses-sent-ipv4: 6185014077 dns-udp-responses-sent-ipv6: 541533967 dns-tcp-responses-sent-ipv4: 141380768 dns-tcp-responses-sent-ipv6: 5671645