--- service: a.root-servers.net start-period: '2014-05-07T00:00:00Z' end-period: '2014-05-07T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5437769135 dns-udp-queries-received-ipv6: 197415925 dns-tcp-queries-received-ipv4: 29258328 dns-tcp-queries-received-ipv6: 1849201 dns-udp-responses-sent-ipv4: 5436994134 dns-udp-responses-sent-ipv6: 197422731 dns-tcp-responses-sent-ipv4: 29273039 dns-tcp-responses-sent-ipv6: 140