--- service: a.root-servers.net start-period: '2017-03-01T00:00:00Z' end-period: '2017-03-01T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4995778429 dns-udp-queries-received-ipv6: 500253322 dns-tcp-queries-received-ipv4: 187597179 dns-tcp-queries-received-ipv6: 10761871 dns-udp-responses-sent-ipv4: 4991015517 dns-udp-responses-sent-ipv6: 500177254 dns-tcp-responses-sent-ipv4: 187944960 dns-tcp-responses-sent-ipv6: 10840205