--- service: a.root-servers.net start-period: '2015-10-11T00:00:00Z' end-period: '2015-10-11T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2632462458 dns-udp-queries-received-ipv6: 268467870 dns-tcp-queries-received-ipv4: 16713496 dns-tcp-queries-received-ipv6: 6847919 dns-udp-responses-sent-ipv4: 2632366694 dns-udp-responses-sent-ipv6: 268341838 dns-tcp-responses-sent-ipv4: 14653501 dns-tcp-responses-sent-ipv6: 5334932