--- service: a.root-servers.net start-period: '2016-12-07T00:00:00Z' end-period: '2016-12-07T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5373245994 dns-udp-queries-received-ipv6: 506947470 dns-tcp-queries-received-ipv4: 235872098 dns-tcp-queries-received-ipv6: 8510713 dns-udp-responses-sent-ipv4: 5362948618 dns-udp-responses-sent-ipv6: 506326594 dns-tcp-responses-sent-ipv4: 237417005 dns-tcp-responses-sent-ipv6: 8560612