--- service: a.root-servers.net start-period: '2017-01-12T00:00:00Z' end-period: '2017-01-12T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4730027994 dns-udp-queries-received-ipv6: 496819628 dns-tcp-queries-received-ipv4: 95857537 dns-tcp-queries-received-ipv6: 10605360 dns-udp-responses-sent-ipv4: 4723469447 dns-udp-responses-sent-ipv6: 496683387 dns-tcp-responses-sent-ipv4: 96921874 dns-tcp-responses-sent-ipv6: 10654715