--- service: a.root-servers.net start-period: '2017-01-17T00:00:00Z' end-period: '2017-01-17T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4584146847 dns-udp-queries-received-ipv6: 490043748 dns-tcp-queries-received-ipv4: 142145128 dns-tcp-queries-received-ipv6: 9983130 dns-udp-responses-sent-ipv4: 4579715671 dns-udp-responses-sent-ipv6: 489744458 dns-tcp-responses-sent-ipv4: 143012827 dns-tcp-responses-sent-ipv6: 9974860