--- service: a.root-servers.net start-period: '2014-04-20T00:00:00Z' end-period: '2014-04-20T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2416014513 dns-udp-queries-received-ipv6: 81008669 dns-tcp-queries-received-ipv4: 10560566 dns-tcp-queries-received-ipv6: 1289668 dns-udp-responses-sent-ipv4: 2415314319 dns-udp-responses-sent-ipv6: 80979300 dns-tcp-responses-sent-ipv4: 10533742 dns-tcp-responses-sent-ipv6: 113