--- service: a.root-servers.net start-period: '2015-07-05T00:00:00Z' end-period: '2015-07-05T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2707753974 dns-udp-queries-received-ipv6: 264352477 dns-tcp-queries-received-ipv4: 19295125 dns-tcp-queries-received-ipv6: 9821974 dns-udp-responses-sent-ipv4: 2734601848 dns-udp-responses-sent-ipv6: 266203686 dns-tcp-responses-sent-ipv4: 16516645 dns-tcp-responses-sent-ipv6: 8507474