--- service: d.root-servers.net start-period: '2015-10-23T00:00:00Z' end-period: '2015-10-23T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3770067528 dns-udp-queries-received-ipv6: 448330950 dns-tcp-queries-received-ipv4: 16625583 dns-tcp-queries-received-ipv6: 515927 dns-udp-responses-sent-ipv4: 3756450812 dns-udp-responses-sent-ipv6: 447911589 dns-tcp-responses-sent-ipv4: 16578817 dns-tcp-responses-sent-ipv6: 515466