--- service: a.root-servers.net start-period: '2016-12-08T00:00:00Z' end-period: '2016-12-08T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4894663230 dns-udp-queries-received-ipv6: 497771081 dns-tcp-queries-received-ipv4: 226532563 dns-tcp-queries-received-ipv6: 8324294 dns-udp-responses-sent-ipv4: 4888010612 dns-udp-responses-sent-ipv6: 497009837 dns-tcp-responses-sent-ipv4: 227756354 dns-tcp-responses-sent-ipv6: 8520711