--- service: a.root-servers.net start-period: '2014-11-20T00:00:00Z' end-period: '2014-11-20T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2753494514 dns-udp-queries-received-ipv6: 199293356 dns-tcp-queries-received-ipv4: 16461853 dns-tcp-queries-received-ipv6: 2294968 dns-udp-responses-sent-ipv4: 2752541506 dns-udp-responses-sent-ipv6: 199232867 dns-tcp-responses-sent-ipv4: 14998346 dns-tcp-responses-sent-ipv6: 1609834