--- service: a.root-servers.net start-period: '2016-04-09T00:00:00Z' end-period: '2016-04-09T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5158076979 dns-udp-queries-received-ipv6: 319294842 dns-tcp-queries-received-ipv4: 90164980 dns-tcp-queries-received-ipv6: 3130895 dns-udp-responses-sent-ipv4: 5159984829 dns-udp-responses-sent-ipv6: 318964022 dns-tcp-responses-sent-ipv4: 67504078 dns-tcp-responses-sent-ipv6: 268164