--- service: a.root-servers.net start-period: '2014-12-04T00:00:00Z' end-period: '2014-12-04T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2721622507 dns-udp-queries-received-ipv6: 195032248 dns-tcp-queries-received-ipv4: 18265204 dns-tcp-queries-received-ipv6: 2568775 dns-udp-responses-sent-ipv4: 2720898162 dns-udp-responses-sent-ipv6: 194991498 dns-tcp-responses-sent-ipv4: 17006537 dns-tcp-responses-sent-ipv6: 1587365