--- service: a.root-servers.net start-period: '2014-12-09T00:00:00Z' end-period: '2014-12-09T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3208081622 dns-udp-queries-received-ipv6: 199492395 dns-tcp-queries-received-ipv4: 18648473 dns-tcp-queries-received-ipv6: 2007933 dns-udp-responses-sent-ipv4: 3207409237 dns-udp-responses-sent-ipv6: 199450745 dns-tcp-responses-sent-ipv4: 17443848 dns-tcp-responses-sent-ipv6: 1138681