--- service: a.root-servers.net start-period: '2014-01-10T00:00:00Z' end-period: '2014-01-10T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1533670693 dns-udp-queries-received-ipv6: 52139179 dns-tcp-queries-received-ipv4: 7562552 dns-tcp-queries-received-ipv6: 671102 dns-udp-responses-sent-ipv4: 1531887206 dns-udp-responses-sent-ipv6: 52137304 dns-tcp-responses-sent-ipv4: 7506181 dns-tcp-responses-sent-ipv6: 67