--- service: a.root-servers.net start-period: '2016-07-06T00:00:00Z' end-period: '2016-07-06T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4404848092 dns-udp-queries-received-ipv6: 518680326 dns-tcp-queries-received-ipv4: 75189794 dns-tcp-queries-received-ipv6: 7076611 dns-udp-responses-sent-ipv4: 4404469664 dns-udp-responses-sent-ipv6: 518707684 dns-tcp-responses-sent-ipv4: 62348289 dns-tcp-responses-sent-ipv6: 322301