--- service: a.root-servers.net start-period: '2014-12-14T00:00:00Z' end-period: '2014-12-14T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2408218673 dns-udp-queries-received-ipv6: 173735482 dns-tcp-queries-received-ipv4: 16986298 dns-tcp-queries-received-ipv6: 2295210 dns-udp-responses-sent-ipv4: 2407763826 dns-udp-responses-sent-ipv6: 173701517 dns-tcp-responses-sent-ipv4: 15843282 dns-tcp-responses-sent-ipv6: 1601413