--- service: a.root-servers.net start-period: '2016-07-12T00:00:00Z' end-period: '2016-07-12T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4642069136 dns-udp-queries-received-ipv6: 499386541 dns-tcp-queries-received-ipv4: 90307315 dns-tcp-queries-received-ipv6: 7325471 dns-udp-responses-sent-ipv4: 4641657349 dns-udp-responses-sent-ipv6: 499338866 dns-tcp-responses-sent-ipv4: 74916360 dns-tcp-responses-sent-ipv6: 493561