--- service: a.root-servers.net start-period: '2016-12-10T00:00:00Z' end-period: '2016-12-10T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4200815288 dns-udp-queries-received-ipv6: 475532641 dns-tcp-queries-received-ipv4: 202324426 dns-tcp-queries-received-ipv6: 7810127 dns-udp-responses-sent-ipv4: 4194260249 dns-udp-responses-sent-ipv6: 474838066 dns-tcp-responses-sent-ipv4: 203495812 dns-tcp-responses-sent-ipv6: 7764919