--- service: a.root-servers.net start-period: '2016-06-13T00:00:00Z' end-period: '2016-06-13T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5530108163 dns-udp-queries-received-ipv6: 441623282 dns-tcp-queries-received-ipv4: 79385581 dns-tcp-queries-received-ipv6: 5565440 dns-udp-responses-sent-ipv4: 5529881053 dns-udp-responses-sent-ipv6: 441299657 dns-tcp-responses-sent-ipv4: 67201888 dns-tcp-responses-sent-ipv6: 326530