--- service: a.root-servers.net start-period: '2016-06-04T00:00:00Z' end-period: '2016-06-04T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5312254001 dns-udp-queries-received-ipv6: 399424869 dns-tcp-queries-received-ipv4: 74783417 dns-tcp-queries-received-ipv6: 5209124 dns-udp-responses-sent-ipv4: 5311906656 dns-udp-responses-sent-ipv6: 399091262 dns-tcp-responses-sent-ipv4: 63500748 dns-tcp-responses-sent-ipv6: 313265