--- service: a.root-servers.net start-period: '2015-10-02T00:00:00Z' end-period: '2015-10-02T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3294209237 dns-udp-queries-received-ipv6: 306197826 dns-tcp-queries-received-ipv4: 19785004 dns-tcp-queries-received-ipv6: 9680329 dns-udp-responses-sent-ipv4: 3295162592 dns-udp-responses-sent-ipv6: 304413817 dns-tcp-responses-sent-ipv4: 16787660 dns-tcp-responses-sent-ipv6: 7946361