--- version: rssac002v3 service: a.root-servers.net start-period: '2018-09-07T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4048376990 dns-udp-queries-received-ipv6: 642555502 dns-tcp-queries-received-ipv4: 112655627 dns-tcp-queries-received-ipv6: 20302108 dns-udp-responses-sent-ipv4: 3944069883 dns-udp-responses-sent-ipv6: 641995311 dns-tcp-responses-sent-ipv4: 108764416 dns-tcp-responses-sent-ipv6: 20316336