--- service: a.root-servers.net start-period: '2014-01-09T00:00:00Z' end-period: '2014-01-09T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1505376201 dns-udp-queries-received-ipv6: 48156403 dns-tcp-queries-received-ipv4: 7183019 dns-tcp-queries-received-ipv6: 675947 dns-udp-responses-sent-ipv4: 1503810684 dns-udp-responses-sent-ipv6: 48155316 dns-tcp-responses-sent-ipv4: 7109355 dns-tcp-responses-sent-ipv6: 62