--- service: a.root-servers.net start-period: '2016-09-16T00:00:00Z' end-period: '2016-09-16T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4643738106 dns-udp-queries-received-ipv6: 465168278 dns-tcp-queries-received-ipv4: 126825119 dns-tcp-queries-received-ipv6: 6468141 dns-udp-responses-sent-ipv4: 4637492420 dns-udp-responses-sent-ipv6: 464895993 dns-tcp-responses-sent-ipv4: 121495795 dns-tcp-responses-sent-ipv6: 4501353