--- service: a.root-servers.net start-period: '2014-02-20T00:00:00Z' end-period: '2014-02-20T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2289328300 dns-udp-queries-received-ipv6: 84701763 dns-tcp-queries-received-ipv4: 11755165 dns-tcp-queries-received-ipv6: 1153304 dns-udp-responses-sent-ipv4: 2266081122 dns-udp-responses-sent-ipv6: 84685628 dns-tcp-responses-sent-ipv4: 11815802 dns-tcp-responses-sent-ipv6: 102