--- version: rssac002v3 service: a.root-servers.net start-period: '2018-07-20T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3804447432 dns-udp-queries-received-ipv6: 474117105 dns-tcp-queries-received-ipv4: 122896229 dns-tcp-queries-received-ipv6: 18649741 dns-udp-responses-sent-ipv4: 3711137315 dns-udp-responses-sent-ipv6: 473746328 dns-tcp-responses-sent-ipv4: 119729571 dns-tcp-responses-sent-ipv6: 18660847