--- service: a.root-servers.net start-period: '2015-03-06T00:00:00Z' end-period: '2015-03-06T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3134968811 dns-udp-queries-received-ipv6: 236429920 dns-tcp-queries-received-ipv4: 19319331 dns-tcp-queries-received-ipv6: 2296458 dns-udp-responses-sent-ipv4: 3129815725 dns-udp-responses-sent-ipv6: 236212574 dns-tcp-responses-sent-ipv4: 16906679 dns-tcp-responses-sent-ipv6: 1312380